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Java认证考试

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1. interface A { public void aMethod(); }  2. interface B { public void bMethod(); }  3. interface C extends A,B { public void cMethod(); }  4. class D implements B {  5. public void bMethod() { }  6. }  7. class E extends D implements C {  8. public void aMethod() { }  9. public void bMethod() { }  10. public void cMethod() { }  11. }  What is the result?() 

  • A、 Compilation fails because of an error in line 3.
  • B、 Compilation fails because of an error in line 7.
  • C、 Compilation fails because of an error in line 9.
  • D、 If you define D e = new E(), then e.bMethod() invokes the version of bMethod()defined in Line 5.
  • E、 If you define D e = (D)(new E()),then e.bMethod() invokes the version of bMethod() defined in Line 5.
  • F、 If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.
正确答案:F
答案解析:
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