枚举类（二）

枚举类

/*
 * 通过JDK5提供的枚举来做枚举类
 */
public enumDirection3 {
   FRONT("前") {
      @Override
      public void show() {
         System.out.println("前");
      }
   },
   BEHIND("后") {
      @Override
      public void show() {
         System.out.println("后");
      }
   },
   LEFT("左") {
      @Override
      public void show() {
         System.out.println("左");
      }
   },
   RIGHT("右") {
      @Override
      public void show() {
         System.out.println("右");
      }
   };
 
   private Stringname;
 
   private Direction3(String name){
      this.name = name;
   }
 
   public String getName() {
      return name;
   }
 
   public abstract void show();
}
 
public classDirectionDemo {
   public static void main(String[] args) {
  
      Direction3d3 = Direction3.FRONT;
      System.out.println(d3);
      System.out.println(d3.getName());
      d3.show();
      System.out.println("--------------");
 
      Direction3dd = Direction3.FRONT;
      dd= Direction3.LEFT;
 
      switch (dd) {
      case FRONT:
         System.out.println("你选择了前");
         break;
      case BEHIND:
         System.out.println("你选择了后");
         break;
      case LEFT:
         System.out.println("你选择了左");
         break;
      case RIGHT:
         System.out.println("你选择了右");
         break;
      }
   }
}
运行结果：
FRONT
前
前
--------------
你选择了左