"SCJP 1.6版考題 117" 修訂間的差異
出自 陳富國維基館
(新頁面: Given: 11. class Converter{ 12. public static void main(String[] args){ 13. Integer i = args[0]; 14. int j = 12; 15. System.out.println("It is " + (j==i) + " that j==i.")...) |
(無差異)
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於 2013年3月30日 (六) 04:16 的最新修訂
Given:
11. class Converter{
12. public static void main(String[] args){
13. Integer i = args[0];
14. int j = 12;
15. System.out.println("It is " + (j==i) + " that j==i.");
16. }
17. }
What is the result when the programmer attempts to compile the code and run it with the command java Converter 12?
A. It is true that j==i.
B. It is false that j==i.
C. An exception is thrown at runtime.
D. Compilation fails because of an error in line 13.
解答
Ans: D
解說:
args的每一個元素皆是字串，無法指定給Integer型態(型態不符) 改為：Integer i = Integer.parseInt(args[0]);
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