SCJP 1.6版考題 098

15. public class Yippee{
16.   public static void main(String[] args){
17.     for(int x = 1; x < args.length; x++){
18.         System.out.print(args[x] + " ");
19.     }
20.   }
21. }


and two separate command line invocations:
java Yippee
java Yippee 1 2 3 4

What is the result?
  A. No output is produced.
     1 2 3
  B. No output is produced.
     2 3 4
  C. No output is produced.
     1 2 3 4
  D. An exception is thrown at runtime.
     1 2 3
  E. An exception is thrown at runtime.
     2 3 4
  F. An exception is thrown at runtime
     1 2 3 4

解答

---

Ans: B

解說:

第一次執行，沒有參數，args.length=0，for迴圈不會跑
第二次執行，有4個參數，args.length=4，for迴圈從1~3，印args[1]~args[3]