程序包 org.bukkit.block.data.type

# 接口 Lectern

所有超级接口:
  `BlockData`, `Cloneable`, `Directional`, `Powerable`

public interface Lectern extends Directional, Powerable
'has_book' 可用于快速检测讲台内是否有书.

- ## 方法概要

  修饰符和类型
  方法
  说明
  `boolean`
  `hasBook()`
  获取 'has_book' 属性的值.

  ### 从接口继承的方法 org.bukkit.block.data.BlockData

  `clone, copyTo, createBlockState, getAsString, getAsString, getLightEmission, getMapColor, getMaterial, getPistonMoveReaction, getPlacementMaterial, getSoundGroup, isFaceSturdy, isOccluding, isPreferredTool, isSupported, isSupported, matches, merge, mirror, requiresCorrectToolForDrops, rotate`

  ### 从接口继承的方法 org.bukkit.block.data.Directional

  `getFaces, getFacing, setFacing`

  ### 从接口继承的方法 org.bukkit.block.data.Powerable

  `isPowered, setPowered`

- ## 方法详细资料

  - ### hasBook

    boolean hasBook()
    获取 'has_book' 属性的值.

    原文:Gets the value of the 'has_book' property.

    返回:
      属性 'has_book' 的值