第37題
Given:
21. abstract class C1{
22. public C1(){System.out.print(1);}
23. }
24. class C2 extends C1{
25. public C2(){System.out.print(2);}
26. }
27. class C3 extends C2{
28. public C3(){System.out.print(3);}
29. }
30. public class Ctest{
31. public static void main(String[] a){new C3();}
32. }
What is the result?
(A) 3
(B) 23
(C) 32
(D) 123
(E) 321
F. Compilation fails.
G. An exception is thrown at runtime.
阿摩線上測驗
登入