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.printIn(cat.noise()); What is the result?()
- A、 peep
- B、 bark
- C、 meow
- D、 Compilation fails.
- E、 An exception is thrown at runtime.
正确答案:E
答案解析:有
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