Java 使用枚举enum 和 switch 语句2

public class MainClass {
   enum Choice { Choice1, Choice2, Choice3 }
   public static void main(String[] args) {
      Choice ch = Choice.Choice1;

      switch(ch) {
         case Choice1:
            System.out.println("Choice1 selected");
            break;
         case Choice2:
            System.out.println("Choice2 selected");
            break;
         case Choice3:
            System.out.println("Choice3 selected");
             break;
      }
   }
}