Interface Inventory

All Superinterfaces:
java.lang.Iterable<ItemStack>
All Known Subinterfaces:
AnvilInventory, BeaconInventory, BrewerInventory, CraftingInventory, DoubleChestInventory, EnchantingInventory, FurnaceInventory, HorseInventory, MerchantInventory, PlayerInventory

public interface Inventory
extends java.lang.Iterable<ItemStack>
Interface to the various inventories. Behavior relating to Material.AIR is unspecified.
  • Method Summary

    Modifier and Type Method Description
    java.util.HashMap<java.lang.Integer,​ItemStack> addItem​(ItemStack... items)
    Stores the given ItemStacks in the inventory.
    java.util.HashMap<java.lang.Integer,​? extends ItemStack> all​(int materialId)
    Deprecated.
    Magic value
    java.util.HashMap<java.lang.Integer,​? extends ItemStack> all​(ItemStack item)
    Finds all slots in the inventory containing any ItemStacks with the given ItemStack.
    java.util.HashMap<java.lang.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​(int materialId)
    Deprecated.
    Magic value
    boolean contains​(int materialId, int amount)
    Deprecated.
    Magic value
    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​(int materialId)
    Deprecated.
    Magic value
    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
    int getMaxStackSize()
    Returns the maximum stack size for an ItemStack in this inventory.
    java.lang.String getName()
    Returns the name of the inventory
    int getSize()
    Returns the size of the inventory
    java.lang.String getTitle()
    Returns the title of this inventory.
    InventoryType getType()
    Returns what type of inventory this is.
    java.util.List<HumanEntity> getViewers()
    Gets a list of players viewing the inventory.
    java.util.ListIterator<ItemStack> iterator()  
    java.util.ListIterator<ItemStack> iterator​(int index)
    Returns an iterator starting at the given index.
    void remove​(int materialId)
    Deprecated.
    Magic value
    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.
    java.util.HashMap<java.lang.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.

    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.
    • getName

      java.lang.String getName()
      Returns the name of the inventory
      Returns:
      The String with the name of the inventory
    • getItem

      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, 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

      java.util.HashMap<java.lang.Integer,​ItemStack> addItem​(ItemStack... items) throws java.lang.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.

      Parameters:
      items - The ItemStacks to add
      Returns:
      A HashMap containing items that didn't fit.
      Throws:
      java.lang.IllegalArgumentException - if items or any element in it is null
    • removeItem

      java.util.HashMap<java.lang.Integer,​ItemStack> removeItem​(ItemStack... items) throws java.lang.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.

      Parameters:
      items - The ItemStacks to remove
      Returns:
      A HashMap containing items that couldn't be removed.
      Throws:
      java.lang.IllegalArgumentException - if items is null
    • getContents

      ItemStack[] getContents()
      Returns all ItemStacks from the inventory
      Returns:
      An array of ItemStacks from the inventory.
    • setContents

      void setContents​(ItemStack[] items) throws java.lang.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:
      java.lang.IllegalArgumentException - If the array has more items than the inventory.
    • contains

      @Deprecated boolean contains​(int materialId)
      Deprecated.
      Magic value
      Checks if the inventory contains any ItemStacks with the given materialId
      Parameters:
      materialId - The materialId to check for
      Returns:
      true if an ItemStack in this inventory contains the materialId
    • contains

      boolean contains​(Material material) throws java.lang.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:
      java.lang.IllegalArgumentException - if material is null
    • contains

      boolean contains​(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

      @Deprecated boolean contains​(int materialId, int amount)
      Deprecated.
      Magic value
      Checks if the inventory contains any ItemStacks with the given materialId, adding to at least the minimum amount specified.
      Parameters:
      materialId - The materialId to check for
      amount - The minimum amount to look for
      Returns:
      true if this contains any matching ItemStack with the given materialId and amount
    • contains

      boolean contains​(Material material, int amount) throws java.lang.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:
      java.lang.IllegalArgumentException - if material is null
    • contains

      boolean contains​(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

      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.
      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

      @Deprecated java.util.HashMap<java.lang.Integer,​? extends ItemStack> all​(int materialId)
      Deprecated.
      Magic value
      Returns a HashMap with all slots and ItemStacks in the inventory with given materialId.

      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 materialId is found, an empty map is returned.

      Parameters:
      materialId - The materialId to look for
      Returns:
      A HashMap containing the slot index, ItemStack pairs
    • all

      java.util.HashMap<java.lang.Integer,​? extends ItemStack> all​(Material material) throws java.lang.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:
      java.lang.IllegalArgumentException - if material is null
    • all

      java.util.HashMap<java.lang.Integer,​? extends ItemStack> all​(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

      @Deprecated int first​(int materialId)
      Deprecated.
      Magic value
      Finds the first slot in the inventory containing an ItemStack with the given materialId.
      Parameters:
      materialId - The materialId to look for
      Returns:
      The slot index of the given materialId or -1 if not found
    • first

      int first​(Material material) throws java.lang.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:
      java.lang.IllegalArgumentException - if material is null
    • first

      int first​(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.
    • remove

      @Deprecated void remove​(int materialId)
      Deprecated.
      Magic value
      Removes all stacks in the inventory matching the given materialId.
      Parameters:
      materialId - The material to remove
    • remove

      void remove​(Material material) throws java.lang.IllegalArgumentException
      Removes all stacks in the inventory matching the given material.
      Parameters:
      material - The material to remove
      Throws:
      java.lang.IllegalArgumentException - if material is null
    • remove

      void remove​(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

      java.util.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.
    • getTitle

      java.lang.String getTitle()
      Returns the title of this inventory.
      Returns:
      A String with the title.
    • getType

      InventoryType getType()
      Returns what type of inventory this is.
      Returns:
      The InventoryType representing the type of inventory.
    • getHolder

      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

      java.util.ListIterator<ItemStack> iterator()
      Specified by:
      iterator in interface java.lang.Iterable<ItemStack>
    • iterator

      java.util.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.