1. class A { 3. public String to String() { 4. return “4”; 5. } 6. } 7. class B extends A { 8. public String toString() { 9. return super.toString() + “3”; 10. } 11. } 12. public class Test { 13. public static void main (String[] args) { 14. System.out.printIn(new B()); 15. } 16. } What is the result( )?
- A、 Compilation succeeds and 4 is printed.
- B、 Compilation …………… is printed.
- C、 An error on line 9 cause compilation to fail.
- D、 An error on line 14 cause compilation to fail.
- E、 Compilation succeeds but an exception is thrown at line 9.
正确答案:B
答案解析:有
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