1 enum  Season{
2 SPRING, SUMMER,AUTUMN,WINTER
3 }

 1    
 2    Season season = Season.AUTUMN;
 3 
 4     switch(season){
 5         case SPRING:
 6             System.out.println("当前季节: "+season.SPRING);
 7             break;
 8         case SUMMER:
 9             System.out.println("当前季节: "+season.SUMMER);
10             break;
11         case AUTUMN:
12             System.out.println("当前季节: "+season.AUTUMN);
13             break;
14         case WINTER:
15             System.out.println("当前季节: "+season.WINTER);
16             break;
17 
18     }