SCJP題庫第098題


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

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