Package org.bukkit.inventory

Interface Inventory

All Superinterfaces:

Iterable<ItemStack>

All Known Subinterfaces:

AbstractHorseInventory, AnvilInventory, BeaconInventory, BrewerInventory, CartographyInventory, ChiseledBookshelfInventory, CrafterInventory, CraftingInventory, DecoratedPotInventory, DoubleChestInventory, EnchantingInventory, FurnaceInventory, GrindstoneInventory, HorseInventory, JukeboxInventory, LecternInventory, LlamaInventory, LoomInventory, MerchantInventory, PlayerInventory, SmithingInventory, StonecutterInventory

public interface Inventory
extends Iterable<ItemStack>

Interface to the various inventories. Behavior relating to Material.AIR is unspecified.
Note that whilst iterator() deals with the entire inventory, add / contains / remove methods deal only with the storage contents.
Consider using getContents() and getStorageContents() for specific iteration.

See Also:

• getContents()
• getStorageContents()

Method Summary

Modifier and Type	Method	Description
HashMap<Integer,ItemStack>	addItem(ItemStack... items)	Stores the given ItemStacks in the inventory.
HashMap<Integer,? extends ItemStack>	all(ItemStack item)	Finds all slots in the inventory containing any ItemStacks with the given ItemStack.
HashMap<Integer,? extends ItemStack>	all(Material material)	Returns a HashMap with all slots and ItemStacks in the inventory with the given Material.
void	clear()	Clears out the whole Inventory.
void	clear(int index)	Clears out a particular slot in the index.
boolean	contains(ItemStack item)	Checks if the inventory contains any ItemStacks matching the given ItemStack.
boolean	contains(ItemStack item, int amount)	Checks if the inventory contains at least the minimum amount specified of exactly matching ItemStacks.
boolean	contains(Material material)	Checks if the inventory contains any ItemStacks with the given material.
boolean	contains(Material material, int amount)	Checks if the inventory contains any ItemStacks with the given material, adding to at least the minimum amount specified.
boolean	containsAtLeast(ItemStack item, int amount)	Checks if the inventory contains ItemStacks matching the given ItemStack whose amounts sum to at least the minimum amount specified.
int	first(ItemStack item)	Returns the first slot in the inventory containing an ItemStack with the given stack.
int	first(Material material)	Finds the first slot in the inventory containing an ItemStack with the given material
int	firstEmpty()	Returns the first empty Slot.
ItemStack[]	getContents()	Returns all ItemStacks from the inventory
InventoryHolder	getHolder()	Gets the block or entity belonging to the open inventory
ItemStack	getItem(int index)	Returns the ItemStack found in the slot at the given index
Location	getLocation()	Get the location of the block or entity which corresponds to this inventory.
int	getMaxStackSize()	Returns the maximum stack size for an ItemStack in this inventory.
int	getSize()	Returns the size of the inventory
ItemStack[]	getStorageContents()	Return the contents from the section of the inventory where items can reasonably be expected to be stored.
InventoryType	getType()	Returns what type of inventory this is.
List<HumanEntity>	getViewers()	Gets a list of players viewing the inventory.
boolean	isEmpty()	Check whether or not this inventory is empty.
ListIterator<ItemStack>	iterator()
ListIterator<ItemStack>	iterator(int index)	Returns an iterator starting at the given index.
void	remove(ItemStack item)	Removes all stacks in the inventory matching the given stack.
void	remove(Material material)	Removes all stacks in the inventory matching the given material.
HashMap<Integer,ItemStack>	removeItem(ItemStack... items)	Removes the given ItemStacks from the inventory.
void	setContents(ItemStack[] items)	Completely replaces the inventory's contents.
void	setItem(int index, ItemStack item)	Stores the ItemStack at the given index of the inventory.
void	setMaxStackSize(int size)	This method allows you to change the maximum stack size for an inventory.
void	setStorageContents(ItemStack[] items)	Put the given ItemStacks into the storage slots

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Details

getSize

int getSize()

Returns the size of the inventory

Returns:

The size of the inventory

getMaxStackSize

int getMaxStackSize()

Returns the maximum stack size for an ItemStack in this inventory.

Returns:

The maximum size for an ItemStack in this inventory.

setMaxStackSize

void setMaxStackSize(int size)

This method allows you to change the maximum stack size for an inventory.

Caveats:

• Not all inventories respect this value.
• Stacks larger than 127 may be clipped when the world is saved.
• This value is not guaranteed to be preserved; be sure to set it before every time you want to set a slot over the max stack size.
• Stacks larger than the default max size for this type of inventory may not display correctly in the client.

Parameters:

size - The new maximum stack size for items in this inventory.

getItem

@Nullable
ItemStack getItem(int index)

Returns the ItemStack found in the slot at the given index

Parameters:

index - The index of the Slot's ItemStack to return

Returns:

The ItemStack in the slot

setItem

void setItem(int index,
 @Nullable
 ItemStack item)

Stores the ItemStack at the given index of the inventory.

Parameters:

index - The index where to put the ItemStack

item - The ItemStack to set

addItem

@NotNull
HashMap<Integer,ItemStack> addItem(@NotNull
 ItemStack... items)
                            throws IllegalArgumentException

Stores the given ItemStacks in the inventory. This will try to fill existing stacks and empty slots as well as it can.

The returned HashMap contains what it couldn't store, where the key is the index of the parameter, and the value is the ItemStack at that index of the varargs parameter. If all items are stored, it will return an empty HashMap.

If you pass in ItemStacks which exceed the maximum stack size for the Material, first they will be added to partial stacks where Material.getMaxStackSize() is not exceeded, up to Material.getMaxStackSize(). When there are no partial stacks left stacks will be split on Inventory.getMaxStackSize() allowing you to exceed the maximum stack size for that material.

It is known that in some implementations this method will also set the inputted argument amount to the number of that item not placed in slots.

Parameters:

items - The ItemStacks to add

Returns:

A HashMap containing items that didn't fit.

Throws:

IllegalArgumentException - if items or any element in it is null

removeItem

@NotNull
HashMap<Integer,ItemStack> removeItem(@NotNull
 ItemStack... items)
                               throws IllegalArgumentException

Removes the given ItemStacks from the inventory.

It will try to remove 'as much as possible' from the types and amounts you give as arguments.

The returned HashMap contains what it couldn't remove, where the key is the index of the parameter, and the value is the ItemStack at that index of the varargs parameter. If all the given ItemStacks are removed, it will return an empty HashMap.

It is known that in some implementations this method will also set the inputted argument amount to the number of that item not removed from slots.

Parameters:

items - The ItemStacks to remove

Returns:

A HashMap containing items that couldn't be removed.

Throws:

IllegalArgumentException - if items is null

getContents

@NotNull
ItemStack[] getContents()

Returns all ItemStacks from the inventory

Returns:

An array of ItemStacks from the inventory. Individual items may be null.

setContents

void setContents(@NotNull
 ItemStack[] items)
          throws IllegalArgumentException

Completely replaces the inventory's contents. Removes all existing contents and replaces it with the ItemStacks given in the array.

Parameters:

items - A complete replacement for the contents; the length must be less than or equal to getSize().

Throws:

IllegalArgumentException - If the array has more items than the inventory.

getStorageContents

@NotNull
ItemStack[] getStorageContents()

Return the contents from the section of the inventory where items can reasonably be expected to be stored. In most cases this will represent the entire inventory, but in some cases it may exclude armor or result slots.
It is these contents which will be used for add / contains / remove methods which look for a specific stack.

Returns:

inventory storage contents. Individual items may be null.

setStorageContents

void setStorageContents(@NotNull
 ItemStack[] items)
                 throws IllegalArgumentException

Put the given ItemStacks into the storage slots

Parameters:

items - The ItemStacks to use as storage contents

Throws:

IllegalArgumentException - If the array has more items than the inventory.

contains

boolean contains(@NotNull
 Material material)
          throws IllegalArgumentException

Checks if the inventory contains any ItemStacks with the given material.

Parameters:

material - The material to check for

Returns:

true if an ItemStack is found with the given Material

Throws:

IllegalArgumentException - if material is null

contains

@Contract("null -> false")
boolean contains(@Nullable
 ItemStack item)

Checks if the inventory contains any ItemStacks matching the given ItemStack.

This will only return true if both the type and the amount of the stack match.

Parameters:

item - The ItemStack to match against

Returns:

false if item is null, true if any exactly matching ItemStacks were found

contains

boolean contains(@NotNull
 Material material,
 int amount)
          throws IllegalArgumentException

Checks if the inventory contains any ItemStacks with the given material, adding to at least the minimum amount specified.

Parameters:

material - The material to check for

amount - The minimum amount

Returns:

true if amount is less than 1, true if enough ItemStacks were found to add to the given amount

Throws:

IllegalArgumentException - if material is null

contains

@Contract("null, _ -> false")
boolean contains(@Nullable
 ItemStack item,
 int amount)

Checks if the inventory contains at least the minimum amount specified of exactly matching ItemStacks.

An ItemStack only counts if both the type and the amount of the stack match.

Parameters:

item - the ItemStack to match against

amount - how many identical stacks to check for

Returns:

false if item is null, true if amount less than 1, true if amount of exactly matching ItemStacks were found

See Also:

• containsAtLeast(ItemStack, int)

containsAtLeast

@Contract("null, _ -> false")
boolean containsAtLeast(@Nullable
 ItemStack item,
 int amount)

Checks if the inventory contains ItemStacks matching the given ItemStack whose amounts sum to at least the minimum amount specified.

Parameters:

item - the ItemStack to match against

amount - the minimum amount

Returns:

false if item is null, true if amount less than 1, true if enough ItemStacks were found to add to the given amount

all

@NotNull
HashMap<Integer,? extends ItemStack> all(@NotNull
 Material material)
                                  throws IllegalArgumentException

Returns a HashMap with all slots and ItemStacks in the inventory with the given Material.

The HashMap contains entries where, the key is the slot index, and the value is the ItemStack in that slot. If no matching ItemStack with the given Material is found, an empty map is returned.

Parameters:

material - The material to look for

Returns:

A HashMap containing the slot index, ItemStack pairs

Throws:

IllegalArgumentException - if material is null

all

@NotNull
HashMap<Integer,? extends ItemStack> all(@Nullable
 ItemStack item)

Finds all slots in the inventory containing any ItemStacks with the given ItemStack. This will only match slots if both the type and the amount of the stack match

The HashMap contains entries where, the key is the slot index, and the value is the ItemStack in that slot. If no matching ItemStack with the given Material is found, an empty map is returned.

Parameters:

item - The ItemStack to match against

Returns:

A map from slot indexes to item at index

first

int first(@NotNull
 Material material)
   throws IllegalArgumentException

Finds the first slot in the inventory containing an ItemStack with the given material

Parameters:

material - The material to look for

Returns:

The slot index of the given Material or -1 if not found

Throws:

IllegalArgumentException - if material is null

first

int first(@NotNull
 ItemStack item)

Returns the first slot in the inventory containing an ItemStack with the given stack. This will only match a slot if both the type and the amount of the stack match

Parameters:

item - The ItemStack to match against

Returns:

The slot index of the given ItemStack or -1 if not found

firstEmpty

int firstEmpty()

Returns the first empty Slot.

Returns:

The first empty Slot found, or -1 if no empty slots.

isEmpty

boolean isEmpty()

Check whether or not this inventory is empty. An inventory is considered to be empty if there are no ItemStacks in any slot of this inventory.

Returns:

true if empty, false otherwise

remove

void remove(@NotNull
 Material material)
     throws IllegalArgumentException

Removes all stacks in the inventory matching the given material.

Parameters:

material - The material to remove

Throws:

IllegalArgumentException - if material is null

remove

void remove(@NotNull
 ItemStack item)

Removes all stacks in the inventory matching the given stack.

This will only match a slot if both the type and the amount of the stack match

Parameters:

item - The ItemStack to match against

clear

void clear(int index)

Clears out a particular slot in the index.

Parameters:

index - The index to empty.

clear

void clear()

Clears out the whole Inventory.

getViewers

@NotNull
List<HumanEntity> getViewers()

Gets a list of players viewing the inventory. Note that a player is considered to be viewing their own inventory and internal crafting screen even when said inventory is not open. They will normally be considered to be viewing their inventory even when they have a different inventory screen open, but it's possible for customized inventory screens to exclude the viewer's inventory, so this should never be assumed to be non-empty.

Returns:

A list of HumanEntities who are viewing this Inventory.

getType

@NotNull
InventoryType getType()

Returns what type of inventory this is.

Returns:

The InventoryType representing the type of inventory.

getHolder

@Nullable
InventoryHolder getHolder()

Gets the block or entity belonging to the open inventory

Returns:

The holder of the inventory; null if it has no holder.

iterator

@NotNull
ListIterator<ItemStack> iterator()

Specified by:

iterator in interface Iterable<ItemStack>

iterator

@NotNull
ListIterator<ItemStack> iterator(int index)

Returns an iterator starting at the given index. If the index is positive, then the first call to next() will return the item at that index; if it is negative, the first call to previous will return the item at index (getSize() + index).

Parameters:

index - The index.

Returns:

An iterator.

getLocation

@Nullable
Location getLocation()

Get the location of the block or entity which corresponds to this inventory. May return null if this container was custom created or is a virtual / subcontainer.

Returns:

location or null if not applicable.