| Package | Description | 
|---|---|
| org.bukkit.block.data.type | Specific BlockData classes relevant to only a given block or set of blocks. | 
| Modifier and Type | Interface | Description | 
|---|---|---|
| interface  | Bed | Similar to  Bisected, 'part' denotes which half of the bed this block
 corresponds to. | 
| interface  | Beehive | 'honey_level' represents the amount of honey stored in the hive. | 
| interface  | Bell | 'attachment' denotes how the bell is attached to its block. | 
| interface  | Campfire | 'signal_fire' denotes whether the fire is extra smokey due to having a hay
 bale placed beneath it. | 
| interface  | Chest | 'type' represents which part of a double chest this block is, or if it is a
 single chest. | 
| interface  | Cocoa | |
| interface  | CommandBlock | 'conditional' denotes whether this command block is conditional or not, i.e. | 
| interface  | Comparator | 'mode' indicates what mode this comparator will operate in. | 
| interface  | CoralWallFan | |
| interface  | Dispenser | Similar to  Powerable, 'triggered' indicates whether or not the
 dispenser is currently activated. | 
| interface  | Door | 'hinge' indicates which hinge this door is attached to and will rotate around
 when opened. | 
| interface  | EnderChest | |
| interface  | EndPortalFrame | 'eye' denotes whether this end portal frame has been activated by having an
 eye of ender placed in it. | 
| interface  | Furnace | |
| interface  | Gate | 'in_wall" indicates if the fence gate is attached to a wall, and if true the
 texture is lowered by a small amount to blend in better. | 
| interface  | Grindstone | |
| interface  | Hopper | Similar to  Powerable, 'enabled' indicates whether or not the hopper
 is currently activated. | 
| interface  | Ladder | |
| interface  | Lectern | 'has_book' is a quick flag to check whether this lectern has a book inside
 it. | 
| interface  | Observer | |
| interface  | Piston | 'extended' denotes whether the piston head is currently extended or not. | 
| interface  | PistonHead | 'short' denotes this piston head is shorter than the usual amount because it
 is currently retracting. | 
| interface  | RedstoneWallTorch | |
| interface  | Repeater | 'delay' is the propagation delay of a repeater, i.e. | 
| interface  | Stairs | 'shape' represents the texture and bounding box shape of these stairs. | 
| interface  | Switch | |
| interface  | TechnicalPiston | 'type' represents the type of piston which this (technical) block corresponds
 to. | 
| interface  | TrapDoor | |
| interface  | TripwireHook | |
| interface  | WallSign | 
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