問題詳情
85.Given: 11. class Animal{public String noise(){return "peep"；}} 12. class Dog extends Animal{ 13. public String noise(){return "bark"；} 14 } 15. class Cat extends Animal{ 16. public String noise(){return "meow"；} 17. }... 30. Animal animal = new Dog()； 31. Cat cat = (Cat)animal；32. System.out.println(cat.noise())； What is the result?
(A) peep
(B) bark
(C) meow
(D) Compilation fails.
(E) An exception is thrown at runtime.
參考答案