SCJP題庫第028題
1. class X{
2. X(){System.out.print(1);}
3. X(int x){
4. this();
5. System.out.print(2);
6. }
7. }
8. public class Y extends X{
9. Y(){
10. super(6);
11. System.out.print(3);
12. }
13. Y(int y){
14. this();
15. System.out.prin tln(4);
16. }
17. public static void main(String[] a){new Y(5);}
18.}
What is the result?
A. 13
B. 134
C. 1234
D. 2134
E. 2143
F. 4321
Ans:C
解說:
此題follow本身建構子呼叫this()與父類別建構子呼叫super()的過程,即可跑出答案。
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