1 import java.util.*;
 2 public class Demo13{
 3     
 4     
 5     public static void main(String[] args) {
 6         
 7         Weekday day = Weekday.SUN;
 8         
 9         //將enum型別用於switch語句
10         //因為列舉類天生具有型別資訊和有限個列舉常量，所以比int、String型別更適合用在switch語句中：
11         switch(day){
12             //
 
注意：case 後面是空格 加上常量 最後冒號
13             case MON:
14             case TUE:
15             case WED:
16             case THU:
17             case FRI:
18                 System.out.println("Today is " + day +". Work at office!");
19                 break;
20             case SAT:
21             case SUN:
 
22                 System.out.println("Today is " + day +". Work at home!");
23                 break;
24             default:
25                 System.out.println("cannot process " + day);
26         }
27     }
28 }
29 
30 enum Weekday{
31     MON,TUE,WED,THU,FRI,SAT,SUN;
32 }