Inventory related cleanup and improvements.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_CT_2.4_Epilogue/dist/game/data/scripts/ai/areas/PrimevalIsle/PrimevalIsle.java

@@ -462,7 +462,7 @@ public class PrimevalIsle extends AbstractNpcAI
 		if ((npc.getId() == SAILREN) || (getRandom(100) < 3))
 		{
 			final PlayerInstance player = npc.getId() == SAILREN ? getRandomPartyMember(killer) : killer;
-			if (player.getInventory().getSize(false) <= (player.getInventoryLimit() * 0.8))
+			if (player.isInventoryUnder80(false))
 			{
 				giveItems(player, DEINONYCHUS, 1);
 				final ItemInstance summonItem = player.getInventory().getItemByItemId(DEINONYCHUS);

L2J_Mobius_CT_2.4_Epilogue/dist/game/data/scripts/quests/Q00350_EnhanceYourWeapon/Q00350_EnhanceYourWeapon.java

@@ -292,9 +292,8 @@ public class Q00350_EnhanceYourWeapon extends Quest
 			return null;
 		}
 		
-		final ItemInstance[] inv = player.getInventory().getItems();
 		SoulCrystal ret = null;
-		for (ItemInstance item : inv)
+		for (ItemInstance item : player.getInventory().getItems())
 		{
 			final int itemId = item.getId();
 			if (!SOUL_CRYSTALS.containsKey(itemId))

L2J_Mobius_CT_2.4_Epilogue/dist/game/data/stats/items/00000-00099.xml

@@ -937,6 +937,7 @@
 		<set name="immediate_effect" val="true" />
 		<set name="material" val="GOLD" />
 		<set name="price" val="1" />
+		<set name="is_sellable" val="false" />
 		<set name="is_stackable" val="true" />
 	</item>
 	<item id="58" type="Armor" name="Mithril Breastplate">

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java

@@ -14042,13 +14042,23 @@ public class PlayerInstance extends Playable
 	}
 	
 	/**
-	 * Test if player inventory is under 90% capaity
+	 * Test if player inventory is under 90% capacity
 	 * @param includeQuestInv check also quest inventory
 	 * @return
 	 */
 	public boolean isInventoryUnder90(boolean includeQuestInv)
 	{
-		return _inventory.getSize(includeQuestInv) <= (getInventoryLimit() * 0.9);
+		return (_inventory.getSize(item -> !item.isQuestItem() || includeQuestInv) <= (getInventoryLimit() * 0.9));
+	}
+	
+	/**
+	 * Test if player inventory is under 80% capacity
+	 * @param includeQuestInv check also quest inventory
+	 * @return
+	 */
+	public boolean isInventoryUnder80(boolean includeQuestInv)
+	{
+		return (_inventory.getSize(item -> !item.isQuestItem() || includeQuestInv) <= (getInventoryLimit() * 0.8));
 	}
 	
 	public boolean havePetInvItems()

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -40,6 +40,10 @@ public class ConditionPlayerInvSize extends Condition
 	@Override
 	public boolean testImpl(Creature effector, Creature effected, Skill skill, Item item)
 	{
-		return (effector.getActingPlayer() == null) || (effector.getActingPlayer().getInventory().getSize(false) <= (effector.getActingPlayer().getInventoryLimit() - _size));
+		if (effector.getActingPlayer() != null)
+		{
+			return effector.getActingPlayer().getInventory().getSize(i -> !i.isQuestItem()) <= (effector.getActingPlayer().getInventoryLimit() - _size);
+		}
+		return true;
 	}
 }

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/conditions/ConditionTargetInvSize.java

@@ -41,11 +41,11 @@ public class ConditionTargetInvSize extends Condition
 	@Override
 	public boolean testImpl(Creature effector, Creature effected, Skill skill, Item item)
 	{
-		if ((effected == null) || !effected.isPlayer())
+		if ((effected != null) && effected.isPlayer())
 		{
-			return false;
+			final PlayerInstance target = effected.getActingPlayer();
+			return target.getInventory().getSize(i -> !i.isQuestItem()) <= (target.getInventoryLimit() - _size);
 		}
-		final PlayerInstance target = effected.getActingPlayer();
-		return target.getInventory().getSize(false) <= (target.getInventoryLimit() - _size);
+		return false;
 	}
 }

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -21,6 +21,8 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -107,7 +109,7 @@ public abstract class Inventory extends ItemContainer
 	private static final class ChangeRecorder implements PaperdollListener
 	{
 		private final Inventory _inventory;
-		private final List<ItemInstance> _changed;
+		private final Set<ItemInstance> _changed = ConcurrentHashMap.newKeySet();
 		
 		/**
 		 * Constructor of the ChangeRecorder
@@ -116,7 +118,6 @@ public abstract class Inventory extends ItemContainer
 		ChangeRecorder(Inventory inventory)
 		{
 			_inventory = inventory;
-			_changed = new ArrayList<>();
 			_inventory.addPaperdollListener(this);
 		}
 		
@@ -129,10 +130,7 @@ public abstract class Inventory extends ItemContainer
 		@Override
 		public void notifyEquiped(int slot, ItemInstance item, Inventory inventory)
 		{
-			if (!_changed.contains(item))
-			{
-				_changed.add(item);
-			}
+			_changed.add(item);
 		}
 		
 		/**
@@ -144,10 +142,7 @@ public abstract class Inventory extends ItemContainer
 		@Override
 		public void notifyUnequiped(int slot, ItemInstance item, Inventory inventory)
 		{
-			if (!_changed.contains(item))
-			{
-				_changed.add(item);
-			}
+			_changed.add(item);
 		}
 		
 		/**
@@ -180,7 +175,6 @@ public abstract class Inventory extends ItemContainer
 			if (item.getItemType() == WeaponType.BOW)
 			{
 				final ItemInstance arrow = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (arrow != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -189,7 +183,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.CROSSBOW)
 			{
 				final ItemInstance bolts = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (bolts != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -198,7 +191,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.FISHINGROD)
 			{
 				final ItemInstance lure = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (lure != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -217,7 +209,6 @@ public abstract class Inventory extends ItemContainer
 			if (item.getItemType() == WeaponType.BOW)
 			{
 				final ItemInstance arrow = inventory.findArrowForBow(item.getItem());
-				
 				if (arrow != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, arrow);
@@ -226,7 +217,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.CROSSBOW)
 			{
 				final ItemInstance bolts = inventory.findBoltForCrossBow(item.getItem());
-				
 				if (bolts != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, bolts);
@@ -273,8 +263,8 @@ public abstract class Inventory extends ItemContainer
 			{
 				return;
 			}
-			final PlayerInstance player = (PlayerInstance) inventory.getOwner();
 			
+			final PlayerInstance player = (PlayerInstance) inventory.getOwner();
 			Skill enchant4Skill;
 			Skill itemSkill;
 			final Item it = item.getItem();

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -19,9 +19,11 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.function.Predicate;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -45,8 +47,6 @@ public abstract class ItemContainer
 	
 	protected final List<ItemInstance> _items = new CopyOnWriteArrayList<>();
 	
-	int _ownerId = 0;
-	
 	protected ItemContainer()
 	{
 	}
@@ -65,12 +65,7 @@ public abstract class ItemContainer
 	 */
 	public int getOwnerId()
 	{
-		return getOwner() == null ? _ownerId : getOwner().getObjectId();
-	}
-	
-	public void setOwnerId(int id)
-	{
-		_ownerId = id;
+		return getOwner() == null ? 0 : getOwner().getObjectId();
 	}
 	
 	/**
@@ -82,11 +77,27 @@ public abstract class ItemContainer
 	}
 	
 	/**
-	 * @return the items in inventory
+	 * @param filter
+	 * @param filters
+	 * @return the quantity of items in the inventory
 	 */
-	public ItemInstance[] getItems()
+	@SafeVarargs
+	public final int getSize(Predicate<ItemInstance> filter, Predicate<ItemInstance>... filters)
 	{
-		return _items.toArray(new ItemInstance[_items.size()]);
+		for (Predicate<ItemInstance> additionalFilter : filters)
+		{
+			filter = filter.and(additionalFilter);
+		}
+		return (int) _items.stream().filter(filter).count();
+	}
+	
+	/**
+	 * Gets the items in inventory.
+	 * @return the items in inventory.
+	 */
+	public Collection<ItemInstance> getItems()
+	{
+		return _items;
 	}
 	
 	/**

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,7 +19,8 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
-import java.util.LinkedList;
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -54,9 +55,6 @@ public class PlayerInventory extends Inventory
 	
 	private int[] _blockItems = null;
 	
-	private int _questSlots;
-	
-	private final Object _lock;
 	/**
 	 * Block modes:
 	 * <UL>
@@ -70,7 +68,6 @@ public class PlayerInventory extends Inventory
 	public PlayerInventory(PlayerInstance owner)
 	{
 		_owner = owner;
-		_lock = new Object();
 	}
 	
 	@Override
@@ -118,14 +115,14 @@ public class PlayerInventory extends Inventory
 	 * @param allowAncientAdena
 	 * @return ItemInstance : items in inventory
 	 */
-	public ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena)
+	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena)
 	{
 		return getUniqueItems(allowAdena, allowAncientAdena, true);
 	}
 	
-	public ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
+	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || (!allowAdena && (item.getId() == ADENA_ID)) || (!allowAncientAdena && (item.getId() == ANCIENT_ADENA_ID)))
@@ -146,7 +143,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -155,14 +152,14 @@ public class PlayerInventory extends Inventory
 	 * @param allowAncientAdena
 	 * @return ItemInstance : items in inventory
 	 */
-	public ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena)
+	public Collection<ItemInstance> getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena)
 	{
 		return getUniqueItemsByEnchantLevel(allowAdena, allowAncientAdena, true);
 	}
 	
-	public ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
+	public Collection<ItemInstance> getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || (!allowAdena && (item.getId() == ADENA_ID)) || (!allowAncientAdena && (item.getId() == ANCIENT_ADENA_ID)))
@@ -185,14 +182,14 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * @param itemId
 	 * @return
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId)
+	public Collection<ItemInstance> getAllItemsByItemId(int itemId)
 	{
 		return getAllItemsByItemId(itemId, true);
 	}
@@ -201,11 +198,11 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return List<ItemInstance> : matching items from inventory
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, boolean includeEquipped)
+	public List<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if (item == null)
@@ -218,7 +215,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -226,7 +223,7 @@ public class PlayerInventory extends Inventory
 	 * @param enchantment
 	 * @return
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, int enchantment)
+	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment)
 	{
 		return getAllItemsByItemId(itemId, enchantment, true);
 	}
@@ -236,11 +233,11 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return List<ItemInstance> : matching items from inventory
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
+	public List<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if (item == null)
@@ -253,7 +250,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -262,9 +259,9 @@ public class PlayerInventory extends Inventory
 	 * @param feightable
 	 * @return the list of items in inventory available for transaction
 	 */
-	public ItemInstance[] getAvailableItems(boolean allowAdena, boolean allowNonTradeable, boolean feightable)
+	public Collection<ItemInstance> getAvailableItems(boolean allowAdena, boolean allowNonTradeable, boolean feightable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || !item.isAvailable(_owner, allowAdena, allowNonTradeable) || !canManipulateWithItemId(item.getId()))
@@ -283,16 +280,16 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * Get all augmented items
 	 * @return
 	 */
-	public ItemInstance[] getAugmentedItems()
+	public Collection<ItemInstance> getAugmentedItems()
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && item.isAugmented())
@@ -300,16 +297,16 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * Get all element items
 	 * @return
 	 */
-	public ItemInstance[] getElementItems()
+	public Collection<ItemInstance> getElementItems()
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && (item.getElementals() != null))
@@ -317,7 +314,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -325,9 +322,9 @@ public class PlayerInventory extends Inventory
 	 * @param tradeList
 	 * @return ItemInstance : items in inventory
 	 */
-	public TradeItem[] getAvailableItems(TradeList tradeList)
+	public Collection<TradeItem> getAvailableItems(TradeList tradeList)
 	{
-		final List<TradeItem> list = new LinkedList<>();
+		final List<TradeItem> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && item.isAvailable(_owner, false, false))
@@ -339,7 +336,7 @@ public class PlayerInventory extends Inventory
 				}
 			}
 		}
-		return list.toArray(new TradeItem[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -714,18 +711,6 @@ public class PlayerInventory extends Inventory
 			_ancientAdena = null;
 		}
 		
-		if (item.isQuestItem())
-		{
-			synchronized (_lock)
-			{
-				_questSlots--;
-				if (_questSlots < 0)
-				{
-					_questSlots = 0;
-					LOGGER.warning(this + ": QuestInventory size < 0!");
-				}
-			}
-		}
 		return super.removeItem(item);
 	}
 	
@@ -852,7 +837,7 @@ public class PlayerInventory extends Inventory
 	
 	public boolean validateCapacity(long slots, boolean questItem)
 	{
-		return ((slots == 0) && !Config.AUTO_LOOT_SLOT_LIMIT) || questItem ? (_questSlots + slots) <= _owner.getQuestInventoryLimit() : ((_items.size() - _questSlots) + slots) <= _owner.getInventoryLimit();
+		return ((slots == 0) && !Config.AUTO_LOOT_SLOT_LIMIT) || questItem ? (getSize(item -> item.isQuestItem()) + slots) <= _owner.getQuestInventoryLimit() : (getSize(item -> !item.isQuestItem()) + slots) <= _owner.getInventoryLimit();
 	}
 	
 	@Override
@@ -936,24 +921,6 @@ public class PlayerInventory extends Inventory
 		return ((_blockMode != 0) || !CommonUtil.contains(_blockItems, itemId)) && ((_blockMode != 1) || CommonUtil.contains(_blockItems, itemId));
 	}
 	
-	@Override
-	protected void addItem(ItemInstance item)
-	{
-		if (item.isQuestItem())
-		{
-			synchronized (_lock)
-			{
-				_questSlots++;
-			}
-		}
-		super.addItem(item);
-	}
-	
-	public int getSize(boolean quest)
-	{
-		return quest ? _questSlots : getSize() - _questSlots;
-	}
-	
 	@Override
 	public String toString()
 	{

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/multisell/PreparedListContainer.java

@@ -17,6 +17,7 @@
 package org.l2jmobius.gameserver.model.multisell;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.LinkedList;
 
 import org.l2jmobius.gameserver.model.actor.Npc;
@@ -50,7 +51,7 @@ public class PreparedListContainer extends ListContainer
 				return;
 			}
 			
-			final ItemInstance[] items;
+			final Collection<ItemInstance> items;
 			if (getMaintainEnchantment())
 			{
 				items = player.getInventory().getUniqueItemsByEnchantLevel(false, false, false);

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/clientpackets/MultiSellChoose.java

@@ -300,18 +300,18 @@ public class MultiSellChoose implements IClientIncomingPacket
 								if (list.getMaintainEnchantment() || (e.getEnchantLevel() > 0))
 								{
 									// loop through this list and remove (one by one) each item until the required amount is taken.
-									final ItemInstance[] inventoryContents = inv.getAllItemsByItemId(e.getItemId(), e.getEnchantLevel(), false);
+									final List<ItemInstance> inventoryContents = inv.getAllItemsByItemId(e.getItemId(), e.getEnchantLevel(), false);
 									for (int i = 0; i < (e.getItemCount() * _amount); i++)
 									{
-										if (inventoryContents[i].isAugmented())
+										if (inventoryContents.get(i).isAugmented())
 										{
-											augmentation.add(inventoryContents[i].getAugmentation());
+											augmentation.add(inventoryContents.get(i).getAugmentation());
 										}
-										if (inventoryContents[i].getElementals() != null)
+										if (inventoryContents.get(i).getElementals() != null)
 										{
-											elemental = inventoryContents[i].getElementals();
+											elemental = inventoryContents.get(i).getElementals();
 										}
-										if (!player.destroyItem("Multisell", inventoryContents[i].getObjectId(), 1, player.getTarget(), true))
+										if (!player.destroyItem("Multisell", inventoryContents.get(i).getObjectId(), 1, player.getTarget(), true))
 										{
 											player.setMultiSell(null);
 											return;
@@ -358,9 +358,9 @@ public class MultiSellChoose implements IClientIncomingPacket
 									// choice 1. Small number of items exchanged. No sorting.
 									for (int i = 1; i <= (e.getItemCount() * _amount); i++)
 									{
-										final ItemInstance[] inventoryContents = inv.getAllItemsByItemId(e.getItemId(), false);
+										final List<ItemInstance> inventoryContents = inv.getAllItemsByItemId(e.getItemId(), false);
 										
-										itemToTake = inventoryContents[0];
+										itemToTake = inventoryContents.get(0);
 										// get item with the LOWEST enchantment level from the inventory...
 										// +0 is lowest by default...
 										if (itemToTake.getEnchantLevel() > 0)

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/clientpackets/RequestPackageSendableItemList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.clientpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketReader;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.GameClient;
@@ -39,7 +41,7 @@ public class RequestPackageSendableItemList implements IClientIncomingPacket
 	@Override
 	public void run(GameClient client)
 	{
-		final ItemInstance[] items = client.getPlayer().getInventory().getAvailableItems(true, true, true);
+		final Collection<ItemInstance> items = client.getPlayer().getInventory().getAvailableItems(true, true, true);
 		client.sendPacket(new PackageSendableList(items, _objectID, client.getPlayer().getAdena()));
 	}
 }

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/clientpackets/RequestRefundItem.java

@@ -79,13 +79,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 			return;
 		}
 		
-		if (_items == null)
-		{
-			client.sendPacket(ActionFailed.STATIC_PACKET);
-			return;
-		}
-		
-		if (!player.hasRefund())
+		if ((_items == null) || !player.hasRefund())
 		{
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
@@ -126,7 +120,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 		long adena = 0;
 		long slots = 0;
 		
-		final ItemInstance[] refund = player.getRefund().getItems();
+		final ItemInstance[] refund = player.getRefund().getItems().toArray(new ItemInstance[0]);
 		final int[] objectIds = new int[_items.length];
 		
 		for (int i = 0; i < _items.length; i++)
@@ -177,21 +171,21 @@ public class RequestRefundItem implements IClientIncomingPacket
 		
 		if ((weight > Integer.MAX_VALUE) || (weight < 0) || !player.getInventory().validateWeight((int) weight))
 		{
-			player.sendPacket(SystemMessageId.YOU_HAVE_EXCEEDED_THE_WEIGHT_LIMIT);
+			client.sendPacket(SystemMessageId.YOU_HAVE_EXCEEDED_THE_WEIGHT_LIMIT);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
 		
 		if ((slots > Integer.MAX_VALUE) || (slots < 0) || !player.getInventory().validateCapacity((int) slots))
 		{
-			player.sendPacket(SystemMessageId.YOUR_INVENTORY_IS_FULL);
+			client.sendPacket(SystemMessageId.YOUR_INVENTORY_IS_FULL);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
 		
 		if ((adena < 0) || !player.reduceAdena("Refund", adena, player.getLastFolkNPC(), false))
 		{
-			player.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_ENOUGH_ADENA);
+			client.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_ENOUGH_ADENA);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
@@ -209,7 +203,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 		// Update current load status on player
 		final StatusUpdate su = new StatusUpdate(player);
 		su.addAttribute(StatusUpdate.CUR_LOAD, player.getCurrentLoad());
-		player.sendPacket(su);
-		player.sendPacket(new ExBuySellList(player, buyList, true));
+		client.sendPacket(su);
+		client.sendPacket(new ExBuySellList(player, buyList, true));
 	}
 }

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ExBuySellList.java

@@ -17,6 +17,7 @@
 package org.l2jmobius.gameserver.network.serverpackets;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import org.l2jmobius.Config;
@@ -37,8 +38,8 @@ public class ExBuySellList implements IClientOutgoingPacket
 	private final List<Product> _buyList = new ArrayList<>();
 	private final long _money;
 	private double _taxRate = 0;
-	private ItemInstance[] _sellList = null;
-	private ItemInstance[] _refundList = null;
+	private Collection<ItemInstance> _sellList = null;
+	private Collection<ItemInstance> _refundList = null;
 	private final boolean _done;
 	
 	public ExBuySellList(PlayerInstance player, BuyListHolder list, boolean done)
@@ -53,7 +54,7 @@ public class ExBuySellList implements IClientOutgoingPacket
 			}
 			_buyList.add(item);
 		}
-		_sellList = player.getInventory().getAvailableItems(true, false, false);
+		_sellList = player.getInventory().getAvailableItems(false, false, false);
 		if (player.hasRefund())
 		{
 			_refundList = player.getRefund().getItems();
@@ -132,9 +133,9 @@ public class ExBuySellList implements IClientOutgoingPacket
 			packet.writeH(0x00); // Enchant effect 3
 		}
 		
-		if ((_sellList != null) && (_sellList.length > 0))
+		if ((_sellList != null) && !_sellList.isEmpty())
 		{
-			packet.writeH(_sellList.length);
+			packet.writeH(_sellList.size());
 			for (ItemInstance item : _sellList)
 			{
 				packet.writeH(item.getItem().getType1());
@@ -166,9 +167,9 @@ public class ExBuySellList implements IClientOutgoingPacket
 			packet.writeH(0x00);
 		}
 		
-		if ((_refundList != null) && (_refundList.length > 0))
+		if ((_refundList != null) && !_refundList.isEmpty())
 		{
-			packet.writeH(_refundList.length);
+			packet.writeH(_refundList.size());
 			int idx = 0;
 			for (ItemInstance item : _refundList)
 			{
@@ -199,6 +200,7 @@ public class ExBuySellList implements IClientOutgoingPacket
 		}
 		
 		packet.writeC(_done ? 0x01 : 0x00);
+		
 		return true;
 	}
 }

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ExReplyPostItemList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -28,7 +30,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplyPostItemList implements IClientOutgoingPacket
 {
 	PlayerInstance _player;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	
 	public ExReplyPostItemList(PlayerInstance player)
 	{
@@ -40,7 +42,7 @@ public class ExReplyPostItemList implements IClientOutgoingPacket
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.EX_REPLY_POST_ITEM_LIST.writeId(packet);
-		packet.writeD(_itemList.length);
+		packet.writeD(_itemList.size());
 		for (ItemInstance item : _itemList)
 		{
 			packet.writeD(item.getObjectId());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ExReplyReceivedPost.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.entity.Message;
 import org.l2jmobius.gameserver.model.itemcontainer.ItemContainer;
@@ -28,7 +30,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplyReceivedPost implements IClientOutgoingPacket
 {
 	private final Message _msg;
-	private ItemInstance[] _items = null;
+	private Collection<ItemInstance> _items = null;
 	
 	public ExReplyReceivedPost(Message msg)
 	{
@@ -58,9 +60,9 @@ public class ExReplyReceivedPost implements IClientOutgoingPacket
 		packet.writeS(_msg.getSubject());
 		packet.writeS(_msg.getContent());
 		
-		if ((_items != null) && (_items.length > 0))
+		if ((_items != null) && !_items.isEmpty())
 		{
-			packet.writeD(_items.length);
+			packet.writeD(_items.size());
 			for (ItemInstance item : _items)
 			{
 				packet.writeH(item.getItem().getType2());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ExReplySentPost.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.entity.Message;
 import org.l2jmobius.gameserver.model.itemcontainer.ItemContainer;
@@ -29,7 +31,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplySentPost implements IClientOutgoingPacket
 {
 	private final Message _msg;
-	private ItemInstance[] _items = null;
+	private Collection<ItemInstance> _items = null;
 	
 	public ExReplySentPost(Message msg)
 	{
@@ -58,9 +60,9 @@ public class ExReplySentPost implements IClientOutgoingPacket
 		packet.writeS(_msg.getSubject());
 		packet.writeS(_msg.getContent());
 		
-		if ((_items != null) && (_items.length > 0))
+		if ((_items != null) && !_items.isEmpty())
 		{
-			packet.writeD(_items.length);
+			packet.writeD(_items.size());
 			for (ItemInstance item : _items)
 			{
 				packet.writeH(item.getItem().getType2());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ExShowBaseAttributeCancelWindow.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.Weapon;
@@ -24,7 +26,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class ExShowBaseAttributeCancelWindow implements IClientOutgoingPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private long _price;
 	
 	public ExShowBaseAttributeCancelWindow(PlayerInstance player)
@@ -36,7 +38,7 @@ public class ExShowBaseAttributeCancelWindow implements IClientOutgoingPacket
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.EX_SHOW_BASE_ATTRIBUTE_CANCEL_WINDOW.writeId(packet);
-		packet.writeD(_items.length);
+		packet.writeD(_items.size());
 		for (ItemInstance item : _items)
 		{
 			packet.writeD(item.getObjectId());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/GMViewWarehouseWithdrawList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.clan.Clan;
@@ -24,7 +26,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class GMViewWarehouseWithdrawList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private final String _playerName;
 	private final long _money;
 	
@@ -48,7 +50,7 @@ public class GMViewWarehouseWithdrawList extends AbstractItemPacket
 		OutgoingPackets.GM_VIEW_WAREHOUSE_WITHDRAW_LIST.writeId(packet);
 		packet.writeS(_playerName);
 		packet.writeQ(_money);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/ItemList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -24,7 +26,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ItemList extends AbstractItemPacket
 {
 	private final PlayerInstance _player;
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private final boolean _showWindow;
 	
 	public ItemList(PlayerInstance player, boolean showWindow)
@@ -39,7 +41,7 @@ public class ItemList extends AbstractItemPacket
 	{
 		OutgoingPackets.ITEM_LIST.writeId(packet);
 		packet.writeH(_showWindow ? 0x01 : 0x00);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/PackageSendableList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
@@ -26,11 +28,11 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
  */
 public class PackageSendableList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private final int _playerObjId;
 	private final long _adena;
 	
-	public PackageSendableList(ItemInstance[] items, int playerObjId, long adena)
+	public PackageSendableList(Collection<ItemInstance> items, int playerObjId, long adena)
 	{
 		_items = items;
 		_playerObjId = playerObjId;
@@ -43,7 +45,7 @@ public class PackageSendableList extends AbstractItemPacket
 		OutgoingPackets.PACKAGE_SENDABLE_LIST.writeId(packet);
 		packet.writeD(_playerObjId);
 		packet.writeQ(_adena);
-		packet.writeD(_items.length);
+		packet.writeD(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/PetItemList.java

@@ -16,24 +16,26 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class PetItemList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	
-	public PetItemList(ItemInstance[] items)
+	public PetItemList(Collection<ItemInstance> collection)
 	{
-		_items = items;
+		_items = collection;
 	}
 	
 	@Override
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.PET_ITEM_LIST.writeId(packet);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/PrivateStoreManageListBuy.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.TradeItem;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
@@ -26,7 +28,7 @@ public class PrivateStoreManageListBuy implements IClientOutgoingPacket
 {
 	private final int _objId;
 	private final long _playerAdena;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	private final TradeItem[] _buyList;
 	
 	public PrivateStoreManageListBuy(PlayerInstance player)
@@ -46,7 +48,7 @@ public class PrivateStoreManageListBuy implements IClientOutgoingPacket
 		packet.writeQ(_playerAdena);
 		
 		// section2
-		packet.writeD(_itemList.length); // inventory items for potential buy
+		packet.writeD(_itemList.size()); // inventory items for potential buy
 		for (ItemInstance item : _itemList)
 		{
 			packet.writeD(item.getId());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/PrivateStoreManageListSell.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.TradeItem;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
@@ -26,7 +28,7 @@ public class PrivateStoreManageListSell implements IClientOutgoingPacket
 	private final int _objId;
 	private final long _playerAdena;
 	private final boolean _packageSale;
-	private final TradeItem[] _itemList;
+	private final Collection<TradeItem> _itemList;
 	private final TradeItem[] _sellList;
 	
 	public PrivateStoreManageListSell(PlayerInstance player, boolean isPackageSale)
@@ -49,7 +51,7 @@ public class PrivateStoreManageListSell implements IClientOutgoingPacket
 		packet.writeQ(_playerAdena);
 		
 		// section2
-		packet.writeD(_itemList.length); // for potential sells
+		packet.writeD(_itemList.size()); // for potential sells
 		for (TradeItem item : _itemList)
 		{
 			packet.writeD(item.getItem().getType2());

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/SortedWareHouseWithdrawalList.java

@@ -17,6 +17,7 @@
 package org.l2jmobius.gameserver.network.serverpackets;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
@@ -452,13 +453,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * <li>Weapon</li>
 	 * <li>Arrow</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createWeaponList(ItemInstance[] _items)
+	private List<WarehouseItem> createWeaponList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isWeapon() || (item.getItem().getType2() == Item.TYPE2_WEAPON) || (item.isEtcItem() && (item.getItemType() == EtcItemType.ARROW)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -479,13 +480,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Armor</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createArmorList(ItemInstance[] _items)
+	private List<WarehouseItem> createArmorList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isArmor() || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -506,13 +507,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Everything which is no Weapon/Armor</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createEtcItemList(ItemInstance[] _items)
+	private List<WarehouseItem> createEtcItemList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isEtcItem() || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -533,13 +534,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Materials</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createMatList(ItemInstance[] _items)
+	private List<WarehouseItem> createMatList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.MATERIAL)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -560,13 +561,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Recipes</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createRecipeList(ItemInstance[] _items)
+	private List<WarehouseItem> createRecipeList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.RECIPE)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -587,13 +588,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Amulett</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createAmulettList(ItemInstance[] _items)
+	private List<WarehouseItem> createAmulettList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getItemName().toUpperCase().startsWith("AMULET"))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -614,13 +615,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Spellbook & Dwarven Drafts</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createSpellbookList(ItemInstance[] _items)
+	private List<WarehouseItem> createSpellbookList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (!item.getItemName().toUpperCase().startsWith("AMULET"))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -641,13 +642,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Consumables (Potions, Shots, ...)</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createConsumableList(ItemInstance[] _items)
+	private List<WarehouseItem> createConsumableList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && ((item.getEtcItem().getItemType() == EtcItemType.SCROLL) || (item.getEtcItem().getItemType() == EtcItemType.SHOT))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -668,13 +669,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Shots</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createShotList(ItemInstance[] _items)
+	private List<WarehouseItem> createShotList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SHOT)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -695,13 +696,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Scrolls/Potions</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createScrollList(ItemInstance[] _items)
+	private List<WarehouseItem> createScrollList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SCROLL)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -722,13 +723,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Seeds</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createSeedList(ItemInstance[] _items)
+	private List<WarehouseItem> createSeedList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SEED)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -749,13 +750,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Everything which is no Weapon/Armor, Material, Recipe, Spellbook, Scroll or Shot</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createOtherList(ItemInstance[] _items)
+	private List<WarehouseItem> createOtherList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && ((item.getEtcItem().getItemType() != EtcItemType.MATERIAL) && (item.getEtcItem().getItemType() != EtcItemType.RECIPE) && (item.getEtcItem().getItemType() != EtcItemType.SCROLL) && (item.getEtcItem().getItemType() != EtcItemType.SHOT))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -775,13 +776,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	/**
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>no limit</li> This may sound strange but we return the given Array as a List<L2WarehouseItem>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createAllList(ItemInstance[] _items)
+	private List<WarehouseItem> createAllList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (list.size() < MAX_SORT_LIST_ITEMS)
 			{

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/TradeStart.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.PlayerCondOverride;
@@ -26,7 +28,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class TradeStart implements IClientOutgoingPacket
 {
 	private final PlayerInstance _player;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	
 	public TradeStart(PlayerInstance player)
 	{
@@ -44,7 +46,7 @@ public class TradeStart implements IClientOutgoingPacket
 		
 		OutgoingPackets.TRADE_START.writeId(packet);
 		packet.writeD(_player.getActiveTradeList().getPartner().getObjectId());
-		packet.writeH(_itemList.length);
+		packet.writeH(_itemList.size());
 		for (ItemInstance item : _itemList)
 		{
 			packet.writeH(item.getItem().getType1()); // item type1

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/network/serverpackets/WareHouseWithdrawalList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -28,7 +30,7 @@ public class WareHouseWithdrawalList implements IClientOutgoingPacket
 	public static final int CASTLE = 3; // not sure
 	public static final int FREIGHT = 1;
 	private long _playerAdena;
-	private ItemInstance[] _items;
+	private Collection<ItemInstance> _items;
 	/**
 	 * <ul>
 	 * <li>0x01-Private Warehouse</li>
@@ -58,7 +60,7 @@ public class WareHouseWithdrawalList implements IClientOutgoingPacket
 		OutgoingPackets.WAREHOUSE_WITHDRAW_LIST.writeId(packet);
 		packet.writeH(_whType);
 		packet.writeQ(_playerAdena);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		
 		for (ItemInstance item : _items)
 		{

L2J_Mobius_CT_2.6_HighFive/dist/game/data/scripts/ai/areas/PrimevalIsle/PrimevalIsle.java

@@ -462,7 +462,7 @@ public class PrimevalIsle extends AbstractNpcAI
 		if ((npc.getId() == SAILREN) || (getRandom(100) < 3))
 		{
 			final PlayerInstance player = npc.getId() == SAILREN ? getRandomPartyMember(killer) : killer;
-			if (player.getInventory().getSize(false) <= (player.getInventoryLimit() * 0.8))
+			if (player.isInventoryUnder80(false))
 			{
 				giveItems(player, DEINONYCHUS, 1);
 				final ItemInstance summonItem = player.getInventory().getItemByItemId(DEINONYCHUS);

L2J_Mobius_CT_2.6_HighFive/dist/game/data/scripts/quests/Q00350_EnhanceYourWeapon/Q00350_EnhanceYourWeapon.java

@@ -292,9 +292,8 @@ public class Q00350_EnhanceYourWeapon extends Quest
 			return null;
 		}
 		
-		final ItemInstance[] inv = player.getInventory().getItems();
 		SoulCrystal ret = null;
-		for (ItemInstance item : inv)
+		for (ItemInstance item : player.getInventory().getItems())
 		{
 			final int itemId = item.getId();
 			if (!SOUL_CRYSTALS.containsKey(itemId))

L2J_Mobius_CT_2.6_HighFive/dist/game/data/stats/items/00000-00099.xml

@@ -937,6 +937,7 @@
 		<set name="immediate_effect" val="true" />
 		<set name="material" val="GOLD" />
 		<set name="price" val="1" />
+		<set name="is_sellable" val="false" />
 		<set name="is_stackable" val="true" />
 	</item>
 	<item id="58" type="Armor" name="Mithril Breastplate">

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/instance/PlayerInstance.java

@@ -13930,13 +13930,23 @@ public class PlayerInstance extends Playable
 	}
 	
 	/**
-	 * Test if player inventory is under 90% capaity
+	 * Test if player inventory is under 90% capacity
 	 * @param includeQuestInv check also quest inventory
 	 * @return
 	 */
 	public boolean isInventoryUnder90(boolean includeQuestInv)
 	{
-		return _inventory.getSize(includeQuestInv) <= (getInventoryLimit() * 0.9);
+		return (_inventory.getSize(item -> !item.isQuestItem() || includeQuestInv) <= (getInventoryLimit() * 0.9));
+	}
+	
+	/**
+	 * Test if player inventory is under 80% capacity
+	 * @param includeQuestInv check also quest inventory
+	 * @return
+	 */
+	public boolean isInventoryUnder80(boolean includeQuestInv)
+	{
+		return (_inventory.getSize(item -> !item.isQuestItem() || includeQuestInv) <= (getInventoryLimit() * 0.8));
 	}
 	
 	public boolean havePetInvItems()

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -40,6 +40,10 @@ public class ConditionPlayerInvSize extends Condition
 	@Override
 	public boolean testImpl(Creature effector, Creature effected, Skill skill, Item item)
 	{
-		return (effector.getActingPlayer() == null) || (effector.getActingPlayer().getInventory().getSize(false) <= (effector.getActingPlayer().getInventoryLimit() - _size));
+		if (effector.getActingPlayer() != null)
+		{
+			return effector.getActingPlayer().getInventory().getSize(i -> !i.isQuestItem()) <= (effector.getActingPlayer().getInventoryLimit() - _size);
+		}
+		return true;
 	}
 }

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/conditions/ConditionTargetInvSize.java

@@ -41,11 +41,11 @@ public class ConditionTargetInvSize extends Condition
 	@Override
 	public boolean testImpl(Creature effector, Creature effected, Skill skill, Item item)
 	{
-		if ((effected == null) || !effected.isPlayer())
+		if ((effected != null) && effected.isPlayer())
 		{
-			return false;
+			final PlayerInstance target = effected.getActingPlayer();
+			return target.getInventory().getSize(i -> !i.isQuestItem()) <= (target.getInventoryLimit() - _size);
 		}
-		final PlayerInstance target = effected.getActingPlayer();
-		return target.getInventory().getSize(false) <= (target.getInventoryLimit() - _size);
+		return false;
 	}
 }

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/itemcontainer/Inventory.java

@@ -21,6 +21,8 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -107,7 +109,7 @@ public abstract class Inventory extends ItemContainer
 	private static final class ChangeRecorder implements PaperdollListener
 	{
 		private final Inventory _inventory;
-		private final List<ItemInstance> _changed;
+		private final Set<ItemInstance> _changed = ConcurrentHashMap.newKeySet();
 		
 		/**
 		 * Constructor of the ChangeRecorder
@@ -116,7 +118,6 @@ public abstract class Inventory extends ItemContainer
 		ChangeRecorder(Inventory inventory)
 		{
 			_inventory = inventory;
-			_changed = new ArrayList<>();
 			_inventory.addPaperdollListener(this);
 		}
 		
@@ -129,10 +130,7 @@ public abstract class Inventory extends ItemContainer
 		@Override
 		public void notifyEquiped(int slot, ItemInstance item, Inventory inventory)
 		{
-			if (!_changed.contains(item))
-			{
-				_changed.add(item);
-			}
+			_changed.add(item);
 		}
 		
 		/**
@@ -144,10 +142,7 @@ public abstract class Inventory extends ItemContainer
 		@Override
 		public void notifyUnequiped(int slot, ItemInstance item, Inventory inventory)
 		{
-			if (!_changed.contains(item))
-			{
-				_changed.add(item);
-			}
+			_changed.add(item);
 		}
 		
 		/**
@@ -180,7 +175,6 @@ public abstract class Inventory extends ItemContainer
 			if (item.getItemType() == WeaponType.BOW)
 			{
 				final ItemInstance arrow = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (arrow != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -189,7 +183,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.CROSSBOW)
 			{
 				final ItemInstance bolts = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (bolts != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -198,7 +191,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.FISHINGROD)
 			{
 				final ItemInstance lure = inventory.getPaperdollItem(PAPERDOLL_LHAND);
-				
 				if (lure != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, null);
@@ -217,7 +209,6 @@ public abstract class Inventory extends ItemContainer
 			if (item.getItemType() == WeaponType.BOW)
 			{
 				final ItemInstance arrow = inventory.findArrowForBow(item.getItem());
-				
 				if (arrow != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, arrow);
@@ -226,7 +217,6 @@ public abstract class Inventory extends ItemContainer
 			else if (item.getItemType() == WeaponType.CROSSBOW)
 			{
 				final ItemInstance bolts = inventory.findBoltForCrossBow(item.getItem());
-				
 				if (bolts != null)
 				{
 					inventory.setPaperdollItem(PAPERDOLL_LHAND, bolts);
@@ -273,8 +263,8 @@ public abstract class Inventory extends ItemContainer
 			{
 				return;
 			}
-			final PlayerInstance player = (PlayerInstance) inventory.getOwner();
 			
+			final PlayerInstance player = (PlayerInstance) inventory.getOwner();
 			Skill enchant4Skill;
 			Skill itemSkill;
 			final Item it = item.getItem();

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -19,9 +19,11 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.Collection;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.function.Predicate;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -45,8 +47,6 @@ public abstract class ItemContainer
 	
 	protected final List<ItemInstance> _items = new CopyOnWriteArrayList<>();
 	
-	int _ownerId = 0;
-	
 	protected ItemContainer()
 	{
 	}
@@ -65,12 +65,7 @@ public abstract class ItemContainer
 	 */
 	public int getOwnerId()
 	{
-		return getOwner() == null ? _ownerId : getOwner().getObjectId();
-	}
-	
-	public void setOwnerId(int id)
-	{
-		_ownerId = id;
+		return getOwner() == null ? 0 : getOwner().getObjectId();
 	}
 	
 	/**
@@ -82,11 +77,27 @@ public abstract class ItemContainer
 	}
 	
 	/**
-	 * @return the items in inventory
+	 * @param filter
+	 * @param filters
+	 * @return the quantity of items in the inventory
 	 */
-	public ItemInstance[] getItems()
+	@SafeVarargs
+	public final int getSize(Predicate<ItemInstance> filter, Predicate<ItemInstance>... filters)
 	{
-		return _items.toArray(new ItemInstance[_items.size()]);
+		for (Predicate<ItemInstance> additionalFilter : filters)
+		{
+			filter = filter.and(additionalFilter);
+		}
+		return (int) _items.stream().filter(filter).count();
+	}
+	
+	/**
+	 * Gets the items in inventory.
+	 * @return the items in inventory.
+	 */
+	public Collection<ItemInstance> getItems()
+	{
+		return _items;
 	}
 	
 	/**

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,7 +19,8 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
-import java.util.LinkedList;
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -54,9 +55,6 @@ public class PlayerInventory extends Inventory
 	
 	private int[] _blockItems = null;
 	
-	private int _questSlots;
-	
-	private final Object _lock;
 	/**
 	 * Block modes:
 	 * <UL>
@@ -70,7 +68,6 @@ public class PlayerInventory extends Inventory
 	public PlayerInventory(PlayerInstance owner)
 	{
 		_owner = owner;
-		_lock = new Object();
 	}
 	
 	@Override
@@ -118,14 +115,14 @@ public class PlayerInventory extends Inventory
 	 * @param allowAncientAdena
 	 * @return ItemInstance : items in inventory
 	 */
-	public ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena)
+	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena)
 	{
 		return getUniqueItems(allowAdena, allowAncientAdena, true);
 	}
 	
-	public ItemInstance[] getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
+	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || (!allowAdena && (item.getId() == ADENA_ID)) || (!allowAncientAdena && (item.getId() == ANCIENT_ADENA_ID)))
@@ -146,7 +143,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -155,14 +152,14 @@ public class PlayerInventory extends Inventory
 	 * @param allowAncientAdena
 	 * @return ItemInstance : items in inventory
 	 */
-	public ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena)
+	public Collection<ItemInstance> getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena)
 	{
 		return getUniqueItemsByEnchantLevel(allowAdena, allowAncientAdena, true);
 	}
 	
-	public ItemInstance[] getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
+	public Collection<ItemInstance> getUniqueItemsByEnchantLevel(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || (!allowAdena && (item.getId() == ADENA_ID)) || (!allowAncientAdena && (item.getId() == ANCIENT_ADENA_ID)))
@@ -185,14 +182,14 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * @param itemId
 	 * @return
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId)
+	public Collection<ItemInstance> getAllItemsByItemId(int itemId)
 	{
 		return getAllItemsByItemId(itemId, true);
 	}
@@ -201,11 +198,11 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return List<ItemInstance> : matching items from inventory
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, boolean includeEquipped)
+	public List<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if (item == null)
@@ -218,7 +215,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -226,7 +223,7 @@ public class PlayerInventory extends Inventory
 	 * @param enchantment
 	 * @return
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, int enchantment)
+	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment)
 	{
 		return getAllItemsByItemId(itemId, enchantment, true);
 	}
@@ -236,11 +233,11 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return List<ItemInstance> : matching items from inventory
 	 */
-	public ItemInstance[] getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
+	public List<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if (item == null)
@@ -253,7 +250,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -262,9 +259,9 @@ public class PlayerInventory extends Inventory
 	 * @param feightable
 	 * @return the list of items in inventory available for transaction
 	 */
-	public ItemInstance[] getAvailableItems(boolean allowAdena, boolean allowNonTradeable, boolean feightable)
+	public Collection<ItemInstance> getAvailableItems(boolean allowAdena, boolean allowNonTradeable, boolean feightable)
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item == null) || !item.isAvailable(_owner, allowAdena, allowNonTradeable) || !canManipulateWithItemId(item.getId()))
@@ -283,16 +280,16 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * Get all augmented items
 	 * @return
 	 */
-	public ItemInstance[] getAugmentedItems()
+	public Collection<ItemInstance> getAugmentedItems()
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && item.isAugmented())
@@ -300,16 +297,16 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
 	 * Get all element items
 	 * @return
 	 */
-	public ItemInstance[] getElementItems()
+	public Collection<ItemInstance> getElementItems()
 	{
-		final List<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && (item.getElementals() != null))
@@ -317,7 +314,7 @@ public class PlayerInventory extends Inventory
 				list.add(item);
 			}
 		}
-		return list.toArray(new ItemInstance[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -325,9 +322,9 @@ public class PlayerInventory extends Inventory
 	 * @param tradeList
 	 * @return ItemInstance : items in inventory
 	 */
-	public TradeItem[] getAvailableItems(TradeList tradeList)
+	public Collection<TradeItem> getAvailableItems(TradeList tradeList)
 	{
-		final List<TradeItem> list = new LinkedList<>();
+		final List<TradeItem> list = new ArrayList<>();
 		for (ItemInstance item : _items)
 		{
 			if ((item != null) && item.isAvailable(_owner, false, false))
@@ -339,7 +336,7 @@ public class PlayerInventory extends Inventory
 				}
 			}
 		}
-		return list.toArray(new TradeItem[list.size()]);
+		return list;
 	}
 	
 	/**
@@ -714,18 +711,6 @@ public class PlayerInventory extends Inventory
 			_ancientAdena = null;
 		}
 		
-		if (item.isQuestItem())
-		{
-			synchronized (_lock)
-			{
-				_questSlots--;
-				if (_questSlots < 0)
-				{
-					_questSlots = 0;
-					LOGGER.warning(this + ": QuestInventory size < 0!");
-				}
-			}
-		}
 		return super.removeItem(item);
 	}
 	
@@ -852,7 +837,7 @@ public class PlayerInventory extends Inventory
 	
 	public boolean validateCapacity(long slots, boolean questItem)
 	{
-		return ((slots == 0) && !Config.AUTO_LOOT_SLOT_LIMIT) || questItem ? (_questSlots + slots) <= _owner.getQuestInventoryLimit() : ((_items.size() - _questSlots) + slots) <= _owner.getInventoryLimit();
+		return ((slots == 0) && !Config.AUTO_LOOT_SLOT_LIMIT) || questItem ? (getSize(item -> item.isQuestItem()) + slots) <= _owner.getQuestInventoryLimit() : (getSize(item -> !item.isQuestItem()) + slots) <= _owner.getInventoryLimit();
 	}
 	
 	@Override
@@ -936,24 +921,6 @@ public class PlayerInventory extends Inventory
 		return ((_blockMode != 0) || !CommonUtil.contains(_blockItems, itemId)) && ((_blockMode != 1) || CommonUtil.contains(_blockItems, itemId));
 	}
 	
-	@Override
-	protected void addItem(ItemInstance item)
-	{
-		if (item.isQuestItem())
-		{
-			synchronized (_lock)
-			{
-				_questSlots++;
-			}
-		}
-		super.addItem(item);
-	}
-	
-	public int getSize(boolean quest)
-	{
-		return quest ? _questSlots : getSize() - _questSlots;
-	}
-	
 	@Override
 	public String toString()
 	{

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/multisell/PreparedListContainer.java

@@ -17,6 +17,7 @@
 package org.l2jmobius.gameserver.model.multisell;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.LinkedList;
 
 import org.l2jmobius.gameserver.model.actor.Npc;
@@ -50,7 +51,7 @@ public class PreparedListContainer extends ListContainer
 				return;
 			}
 			
-			final ItemInstance[] items;
+			final Collection<ItemInstance> items;
 			if (getMaintainEnchantment())
 			{
 				items = player.getInventory().getUniqueItemsByEnchantLevel(false, false, false);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/clientpackets/MultiSellChoose.java

@@ -300,18 +300,18 @@ public class MultiSellChoose implements IClientIncomingPacket
 								if (list.getMaintainEnchantment() || (e.getEnchantLevel() > 0))
 								{
 									// loop through this list and remove (one by one) each item until the required amount is taken.
-									final ItemInstance[] inventoryContents = inv.getAllItemsByItemId(e.getItemId(), e.getEnchantLevel(), false);
+									final List<ItemInstance> inventoryContents = inv.getAllItemsByItemId(e.getItemId(), e.getEnchantLevel(), false);
 									for (int i = 0; i < (e.getItemCount() * _amount); i++)
 									{
-										if (inventoryContents[i].isAugmented())
+										if (inventoryContents.get(i).isAugmented())
 										{
-											augmentation.add(inventoryContents[i].getAugmentation());
+											augmentation.add(inventoryContents.get(i).getAugmentation());
 										}
-										if (inventoryContents[i].getElementals() != null)
+										if (inventoryContents.get(i).getElementals() != null)
 										{
-											elemental = inventoryContents[i].getElementals();
+											elemental = inventoryContents.get(i).getElementals();
 										}
-										if (!player.destroyItem("Multisell", inventoryContents[i].getObjectId(), 1, player.getTarget(), true))
+										if (!player.destroyItem("Multisell", inventoryContents.get(i).getObjectId(), 1, player.getTarget(), true))
 										{
 											player.setMultiSell(null);
 											return;
@@ -358,9 +358,9 @@ public class MultiSellChoose implements IClientIncomingPacket
 									// choice 1. Small number of items exchanged. No sorting.
 									for (int i = 1; i <= (e.getItemCount() * _amount); i++)
 									{
-										final ItemInstance[] inventoryContents = inv.getAllItemsByItemId(e.getItemId(), false);
+										final List<ItemInstance> inventoryContents = inv.getAllItemsByItemId(e.getItemId(), false);
 										
-										itemToTake = inventoryContents[0];
+										itemToTake = inventoryContents.get(0);
 										// get item with the LOWEST enchantment level from the inventory...
 										// +0 is lowest by default...
 										if (itemToTake.getEnchantLevel() > 0)

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/clientpackets/RequestPackageSendableItemList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.clientpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketReader;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.GameClient;
@@ -39,7 +41,7 @@ public class RequestPackageSendableItemList implements IClientIncomingPacket
 	@Override
 	public void run(GameClient client)
 	{
-		final ItemInstance[] items = client.getPlayer().getInventory().getAvailableItems(true, true, true);
+		final Collection<ItemInstance> items = client.getPlayer().getInventory().getAvailableItems(true, true, true);
 		client.sendPacket(new PackageSendableList(items, _objectID, client.getPlayer().getAdena()));
 	}
 }

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/clientpackets/RequestRefundItem.java

@@ -79,13 +79,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 			return;
 		}
 		
-		if (_items == null)
-		{
-			client.sendPacket(ActionFailed.STATIC_PACKET);
-			return;
-		}
-		
-		if (!player.hasRefund())
+		if ((_items == null) || !player.hasRefund())
 		{
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
@@ -126,7 +120,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 		long adena = 0;
 		long slots = 0;
 		
-		final ItemInstance[] refund = player.getRefund().getItems();
+		final ItemInstance[] refund = player.getRefund().getItems().toArray(new ItemInstance[0]);
 		final int[] objectIds = new int[_items.length];
 		
 		for (int i = 0; i < _items.length; i++)
@@ -177,21 +171,21 @@ public class RequestRefundItem implements IClientIncomingPacket
 		
 		if ((weight > Integer.MAX_VALUE) || (weight < 0) || !player.getInventory().validateWeight((int) weight))
 		{
-			player.sendPacket(SystemMessageId.YOU_HAVE_EXCEEDED_THE_WEIGHT_LIMIT);
+			client.sendPacket(SystemMessageId.YOU_HAVE_EXCEEDED_THE_WEIGHT_LIMIT);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
 		
 		if ((slots > Integer.MAX_VALUE) || (slots < 0) || !player.getInventory().validateCapacity((int) slots))
 		{
-			player.sendPacket(SystemMessageId.YOUR_INVENTORY_IS_FULL);
+			client.sendPacket(SystemMessageId.YOUR_INVENTORY_IS_FULL);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
 		
 		if ((adena < 0) || !player.reduceAdena("Refund", adena, player.getLastFolkNPC(), false))
 		{
-			player.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_ENOUGH_ADENA);
+			client.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_ENOUGH_ADENA);
 			client.sendPacket(ActionFailed.STATIC_PACKET);
 			return;
 		}
@@ -209,7 +203,7 @@ public class RequestRefundItem implements IClientIncomingPacket
 		// Update current load status on player
 		final StatusUpdate su = new StatusUpdate(player);
 		su.addAttribute(StatusUpdate.CUR_LOAD, player.getCurrentLoad());
-		player.sendPacket(su);
-		player.sendPacket(new ExBuySellList(player, true));
+		client.sendPacket(su);
+		client.sendPacket(new ExBuySellList(player, true));
 	}
 }

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/ExBuySellList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -26,8 +28,8 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
  */
 public class ExBuySellList extends AbstractItemPacket
 {
-	private ItemInstance[] _sellList = null;
-	private ItemInstance[] _refundList = null;
+	private Collection<ItemInstance> _sellList = null;
+	private Collection<ItemInstance> _refundList = null;
 	private final boolean _done;
 	
 	public ExBuySellList(PlayerInstance player, boolean done)
@@ -48,7 +50,7 @@ public class ExBuySellList extends AbstractItemPacket
 		
 		if ((_sellList != null))
 		{
-			packet.writeH(_sellList.length);
+			packet.writeH(_sellList.size());
 			for (ItemInstance item : _sellList)
 			{
 				writeItem(packet, item);
@@ -60,9 +62,9 @@ public class ExBuySellList extends AbstractItemPacket
 			packet.writeH(0x00);
 		}
 		
-		if ((_refundList != null) && (_refundList.length > 0))
+		if ((_refundList != null) && (!_refundList.isEmpty()))
 		{
-			packet.writeH(_refundList.length);
+			packet.writeH(_refundList.size());
 			int i = 0;
 			for (ItemInstance item : _refundList)
 			{

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/ExReplyPostItemList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -28,7 +30,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplyPostItemList extends AbstractItemPacket
 {
 	PlayerInstance _player;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	
 	public ExReplyPostItemList(PlayerInstance player)
 	{
@@ -40,7 +42,7 @@ public class ExReplyPostItemList extends AbstractItemPacket
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.EX_REPLY_POST_ITEM_LIST.writeId(packet);
-		packet.writeD(_itemList.length);
+		packet.writeD(_itemList.size());
 		for (ItemInstance item : _itemList)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/ExReplyReceivedPost.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.entity.Message;
 import org.l2jmobius.gameserver.model.itemcontainer.ItemContainer;
@@ -28,7 +30,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplyReceivedPost extends AbstractItemPacket
 {
 	private final Message _msg;
-	private ItemInstance[] _items = null;
+	private Collection<ItemInstance> _items = null;
 	
 	public ExReplyReceivedPost(Message msg)
 	{
@@ -58,9 +60,9 @@ public class ExReplyReceivedPost extends AbstractItemPacket
 		packet.writeS(_msg.getSubject());
 		packet.writeS(_msg.getContent());
 		
-		if ((_items != null) && (_items.length > 0))
+		if ((_items != null) && !_items.isEmpty())
 		{
-			packet.writeD(_items.length);
+			packet.writeD(_items.size());
 			for (ItemInstance item : _items)
 			{
 				writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/ExReplySentPost.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.entity.Message;
 import org.l2jmobius.gameserver.model.itemcontainer.ItemContainer;
@@ -29,7 +31,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class ExReplySentPost extends AbstractItemPacket
 {
 	private final Message _msg;
-	private ItemInstance[] _items = null;
+	private Collection<ItemInstance> _items = null;
 	
 	public ExReplySentPost(Message msg)
 	{
@@ -58,9 +60,9 @@ public class ExReplySentPost extends AbstractItemPacket
 		packet.writeS(_msg.getSubject());
 		packet.writeS(_msg.getContent());
 		
-		if ((_items != null) && (_items.length > 0))
+		if ((_items != null) && !_items.isEmpty())
 		{
-			packet.writeD(_items.length);
+			packet.writeD(_items.size());
 			for (ItemInstance item : _items)
 			{
 				writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/ExShowBaseAttributeCancelWindow.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.Weapon;
@@ -24,7 +26,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class ExShowBaseAttributeCancelWindow implements IClientOutgoingPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private long _price;
 	
 	public ExShowBaseAttributeCancelWindow(PlayerInstance player)
@@ -36,7 +38,7 @@ public class ExShowBaseAttributeCancelWindow implements IClientOutgoingPacket
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.EX_SHOW_BASE_ATTRIBUTE_CANCEL_WINDOW.writeId(packet);
-		packet.writeD(_items.length);
+		packet.writeD(_items.size());
 		for (ItemInstance item : _items)
 		{
 			packet.writeD(item.getObjectId());

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/GMViewWarehouseWithdrawList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.clan.Clan;
@@ -24,7 +26,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class GMViewWarehouseWithdrawList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private final String _playerName;
 	private final long _money;
 	
@@ -48,7 +50,7 @@ public class GMViewWarehouseWithdrawList extends AbstractItemPacket
 		OutgoingPackets.GM_VIEW_WAREHOUSE_WITHDRAW_LIST.writeId(packet);
 		packet.writeS(_playerName);
 		packet.writeQ(_money);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/PackageSendableList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
@@ -26,11 +28,11 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
  */
 public class PackageSendableList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	private final int _playerObjId;
 	private final long _adena;
 	
-	public PackageSendableList(ItemInstance[] items, int playerObjId, long adena)
+	public PackageSendableList(Collection<ItemInstance> items, int playerObjId, long adena)
 	{
 		_items = items;
 		_playerObjId = playerObjId;
@@ -43,7 +45,7 @@ public class PackageSendableList extends AbstractItemPacket
 		OutgoingPackets.PACKAGE_SENDABLE_LIST.writeId(packet);
 		packet.writeD(_playerObjId);
 		packet.writeQ(_adena);
-		packet.writeD(_items.length);
+		packet.writeD(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/PetItemList.java

@@ -16,24 +16,26 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
 import org.l2jmobius.gameserver.network.OutgoingPackets;
 
 public class PetItemList extends AbstractItemPacket
 {
-	private final ItemInstance[] _items;
+	private final Collection<ItemInstance> _items;
 	
-	public PetItemList(ItemInstance[] items)
+	public PetItemList(Collection<ItemInstance> collection)
 	{
-		_items = items;
+		_items = collection;
 	}
 	
 	@Override
 	public boolean write(PacketWriter packet)
 	{
 		OutgoingPackets.PET_ITEM_LIST.writeId(packet);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		for (ItemInstance item : _items)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/PrivateStoreManageListBuy.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.TradeItem;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
@@ -26,7 +28,7 @@ public class PrivateStoreManageListBuy extends AbstractItemPacket
 {
 	private final int _objId;
 	private final long _playerAdena;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	private final TradeItem[] _buyList;
 	
 	public PrivateStoreManageListBuy(PlayerInstance player)
@@ -46,7 +48,7 @@ public class PrivateStoreManageListBuy extends AbstractItemPacket
 		packet.writeQ(_playerAdena);
 		
 		// section2
-		packet.writeD(_itemList.length); // inventory items for potential buy
+		packet.writeD(_itemList.size()); // inventory items for potential buy
 		for (ItemInstance item : _itemList)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/PrivateStoreManageListSell.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.TradeItem;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
@@ -26,7 +28,7 @@ public class PrivateStoreManageListSell extends AbstractItemPacket
 	private final int _objId;
 	private final long _playerAdena;
 	private final boolean _packageSale;
-	private final TradeItem[] _itemList;
+	private final Collection<TradeItem> _itemList;
 	private final TradeItem[] _sellList;
 	
 	public PrivateStoreManageListSell(PlayerInstance player, boolean isPackageSale)
@@ -49,7 +51,7 @@ public class PrivateStoreManageListSell extends AbstractItemPacket
 		packet.writeQ(_playerAdena);
 		
 		// section2
-		packet.writeD(_itemList.length); // for potential sells
+		packet.writeD(_itemList.size()); // for potential sells
 		for (TradeItem item : _itemList)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/SortedWareHouseWithdrawalList.java

@@ -17,6 +17,7 @@
 package org.l2jmobius.gameserver.network.serverpackets;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
@@ -452,13 +453,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * <li>Weapon</li>
 	 * <li>Arrow</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createWeaponList(ItemInstance[] _items)
+	private List<WarehouseItem> createWeaponList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isWeapon() || (item.getItem().getType2() == Item.TYPE2_WEAPON) || (item.isEtcItem() && (item.getItemType() == EtcItemType.ARROW)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -479,13 +480,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Armor</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createArmorList(ItemInstance[] _items)
+	private List<WarehouseItem> createArmorList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isArmor() || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -506,13 +507,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Everything which is no Weapon/Armor</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createEtcItemList(ItemInstance[] _items)
+	private List<WarehouseItem> createEtcItemList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (item.isEtcItem() || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -533,13 +534,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Materials</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createMatList(ItemInstance[] _items)
+	private List<WarehouseItem> createMatList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.MATERIAL)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -560,13 +561,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Recipes</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createRecipeList(ItemInstance[] _items)
+	private List<WarehouseItem> createRecipeList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.RECIPE)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -587,13 +588,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Amulett</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createAmulettList(ItemInstance[] _items)
+	private List<WarehouseItem> createAmulettList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getItemName().toUpperCase().startsWith("AMULET"))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -614,13 +615,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Spellbook & Dwarven Drafts</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createSpellbookList(ItemInstance[] _items)
+	private List<WarehouseItem> createSpellbookList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (!item.getItemName().toUpperCase().startsWith("AMULET"))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -641,13 +642,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Consumables (Potions, Shots, ...)</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createConsumableList(ItemInstance[] _items)
+	private List<WarehouseItem> createConsumableList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && ((item.getEtcItem().getItemType() == EtcItemType.SCROLL) || (item.getEtcItem().getItemType() == EtcItemType.SHOT))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -668,13 +669,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Shots</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createShotList(ItemInstance[] _items)
+	private List<WarehouseItem> createShotList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SHOT)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -695,13 +696,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Scrolls/Potions</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createScrollList(ItemInstance[] _items)
+	private List<WarehouseItem> createScrollList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SCROLL)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -722,13 +723,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Seeds</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createSeedList(ItemInstance[] _items)
+	private List<WarehouseItem> createSeedList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && (item.getEtcItem().getItemType() == EtcItemType.SEED)) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -749,13 +750,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>Everything which is no Weapon/Armor, Material, Recipe, Spellbook, Scroll or Shot</li>
 	 * <li>Money</li>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createOtherList(ItemInstance[] _items)
+	private List<WarehouseItem> createOtherList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if ((item.isEtcItem() && ((item.getEtcItem().getItemType() != EtcItemType.MATERIAL) && (item.getEtcItem().getItemType() != EtcItemType.RECIPE) && (item.getEtcItem().getItemType() != EtcItemType.SCROLL) && (item.getEtcItem().getItemType() != EtcItemType.SHOT))) || (item.getItem().getType2() == Item.TYPE2_MONEY))
 			{
@@ -775,13 +776,13 @@ public class SortedWareHouseWithdrawalList implements IClientOutgoingPacket
 	/**
 	 * This method is used to limit the given Warehouse List to:
 	 * <li>no limit</li> This may sound strange but we return the given Array as a List<L2WarehouseItem>
-	 * @param _items complete Warehouse List
+	 * @param items complete Warehouse List
 	 * @return limited Item List
 	 */
-	private List<WarehouseItem> createAllList(ItemInstance[] _items)
+	private List<WarehouseItem> createAllList(Collection<ItemInstance> items)
 	{
 		final List<WarehouseItem> list = new ArrayList<>();
-		for (ItemInstance item : _items)
+		for (ItemInstance item : items)
 		{
 			if (list.size() < MAX_SORT_LIST_ITEMS)
 			{

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/TradeStart.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.PlayerCondOverride;
@@ -26,7 +28,7 @@ import org.l2jmobius.gameserver.network.OutgoingPackets;
 public class TradeStart extends AbstractItemPacket
 {
 	private final PlayerInstance _player;
-	private final ItemInstance[] _itemList;
+	private final Collection<ItemInstance> _itemList;
 	
 	public TradeStart(PlayerInstance player)
 	{
@@ -44,7 +46,7 @@ public class TradeStart extends AbstractItemPacket
 		
 		OutgoingPackets.TRADE_START.writeId(packet);
 		packet.writeD(_player.getActiveTradeList().getPartner().getObjectId());
-		packet.writeH(_itemList.length);
+		packet.writeH(_itemList.size());
 		for (ItemInstance item : _itemList)
 		{
 			writeItem(packet, item);

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/network/serverpackets/WareHouseWithdrawalList.java

@@ -16,6 +16,8 @@
  */
 package org.l2jmobius.gameserver.network.serverpackets;
 
+import java.util.Collection;
+
 import org.l2jmobius.commons.network.PacketWriter;
 import org.l2jmobius.gameserver.model.actor.instance.PlayerInstance;
 import org.l2jmobius.gameserver.model.items.instance.ItemInstance;
@@ -28,7 +30,7 @@ public class WareHouseWithdrawalList extends AbstractItemPacket
 	public static final int CASTLE = 3; // not sure
 	public static final int FREIGHT = 1;
 	private long _playerAdena;
-	private ItemInstance[] _items;
+	private Collection<ItemInstance> _items;
 	/**
 	 * <ul>
 	 * <li>0x01-Private Warehouse</li>
@@ -58,7 +60,7 @@ public class WareHouseWithdrawalList extends AbstractItemPacket
 		OutgoingPackets.WAREHOUSE_WITHDRAW_LIST.writeId(packet);
 		packet.writeH(_whType);
 		packet.writeQ(_playerAdena);
-		packet.writeH(_items.length);
+		packet.writeH(_items.size());
 		
 		for (ItemInstance item : _items)
 		{

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/conditions/ConditionPlayerInvSize.java

@@ -26,7 +26,6 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class ConditionPlayerInvSize extends Condition
 {
-	
 	private final int _size;
 	
 	/**

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/itemcontainer/ItemContainer.java

@@ -544,11 +544,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -563,11 +559,7 @@ public abstract class ItemContainer
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/itemcontainer/PlayerInventory.java

@@ -19,9 +19,9 @@ package org.l2jmobius.gameserver.model.itemcontainer;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 import java.util.logging.Level;
@@ -130,7 +130,7 @@ public class PlayerInventory extends Inventory
 	
 	public Collection<ItemInstance> getUniqueItems(boolean allowAdena, boolean allowAncientAdena, boolean onlyAvailable)
 	{
-		final Collection<ItemInstance> list = new LinkedList<>();
+		final List<ItemInstance> list = new ArrayList<>();
 		for (ItemInstance item : _items.values())
 		{
 			if (!allowAdena && (item.getId() == ADENA_ID))
@@ -172,7 +172,7 @@ public class PlayerInventory extends Inventory
 	 * Returns the list of all items in inventory that have a given item id.
 	 * @param itemId : ID of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, boolean includeEquipped)
 	{
@@ -194,7 +194,7 @@ public class PlayerInventory extends Inventory
 	 * @param itemId : ID of item
 	 * @param enchantment : enchant level of item
 	 * @param includeEquipped : include equipped items
-	 * @return ItemInstance[] : matching items from inventory
+	 * @return Collection<ItemInstance> : matching items from inventory
 	 */
 	public Collection<ItemInstance> getAllItemsByItemId(int itemId, int enchantment, boolean includeEquipped)
 	{
@@ -235,7 +235,7 @@ public class PlayerInventory extends Inventory
 			.filter(i -> i.isAvailable(_owner, false, false))
 			.map(tradeList::adjustAvailableItem)
 			.filter(Objects::nonNull)
-			.collect(Collectors.toCollection(LinkedList::new));
+			.collect(Collectors.toCollection(ArrayList::new));
 		//@formatter:on
 	}
 	
@@ -367,11 +367,7 @@ public class PlayerInventory extends Inventory
 	 */
 	public boolean reduceAncientAdena(String process, long count, PlayerInstance actor, Object reference)
 	{
-		if (count > 0)
-		{
-			return destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null;
-		}
-		return false;
+		return (count > 0) && (destroyItemByItemId(process, ANCIENT_ADENA_ID, count, actor, reference) != null);
 	}
 	
 	/**
@@ -591,11 +587,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItem(String process, int objectId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByObjectId(objectId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**
@@ -611,11 +603,7 @@ public class PlayerInventory extends Inventory
 	public ItemInstance destroyItemByItemId(String process, int itemId, long count, PlayerInstance actor, Object reference)
 	{
 		final ItemInstance item = getItemByItemId(itemId);
-		if (item == null)
-		{
-			return null;
-		}
-		return destroyItem(process, item, count, actor, reference);
+		return item == null ? null : destroyItem(process, item, count, actor, reference);
 	}
 	
 	/**