SCJP題庫第130題
Given:
11. static void test(){
12. try{
13. String x = null;
14. System.out.print(x.toString() + " ");
15. }
16. finally{System.out.print("finally ");}
17. }
18. public static void main(String[] args){
19. try{test();}
20. catch(Exception ex){System.out.print("exception ");}
21. }
What is the result?
A. null
B. finally
C. null finally
D. Compilation fails.
E. finally exception
Ans: E
解說:
14行x.toString()錯誤，因為x是null，不能用null去操作一個不存在的物件方法toString
執行finally內的敘述之後，丟出nullPointerException例外回到main…
由20行的catch補捉此例外…
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