试题详情
单项选择题 1. class A {  2. public int getNumber(int a) {  3.     return a + 1;  4. }  5. }  6.    7. class B extends A {  8. public int getNumber (int a) {  9. return a + 2  10. }  11.    12. public static void main (String args[])  {  13. A a = new B();  14. System.out.printIn(a.getNumber(0));  15.    } 16. }     What is the result?()  

A、 Compilation succeeds and 1 is printed.

B、 Compilation succeeds and 2 is printed.

C、 An error at line 8 causes compilation to fail.

D、 An error at line 13 causes compilation to fail.

E、 An error at line 14 causes compilation to fail.

  • B
  • 关注下方微信公众号,在线模考后查看

热门试题