SCJP 1.6版考題 112

Given:
12. public class Test{
13.   public enum Dogs{collie, harrier);
14.   public static void main(String[] args){
15.     Dogs myDog = Dogs.collie;
16.     switch(myDog){
17.     case collie:
18.         System.out.print("collie ");
19.     case harrier:
20.         System.out.print("harrier ");
21.     }
22.   }
23. }
 

What is the result? 
  A. collie
  B. harrier
  C. Compilation fails.
  D. collie harrier
  E. An exception is thrown at runtime.

解答

---

Ans: D

解說: myDog = Dogs.collie，所以會進入case collie執行，只是此case沒有設break，後面的case會跟著執行