SCJP 1.6版考題 137

Given:
11. class X{public void foo(){System.out.print("X ");}}
12.
13. public class SubB extends X{
14.   public void foo() throws RuntimeException{
15.   uper.foo();
16.   if(true) throw new RuntimeException();
17.   System.out.print("B ");
18. }
19.   public static void main(String[] args){
20.     new SubB().foo();
21.   }
22. }
 

What is the result?
 A. X, followed by an Exception.
 B. No output, and an Exception is thrown.
 C. Compilation fails due to an error on line 14.
 D. Compilation fails due to an error on line 16.
 E. Compilation fails due to an error on line 17.
 F. X, followed by an Exception, followed by B.

解答

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Ans: A

解說: 叫用super.foo()印出X，16行丟出RuntimeException，沒有catch，main也沒有catch，所以整個程式發生例外結束。