• 2021-04-14
    The temper of dog is _______.
  • faithful

    内容

    • 0

      class Animal { public Animal() { System.out.println("Animal!"); } } public class Dog extends Animal{ public Dog() { System.out.println("Dog!"); } public static void main(String[] args) { Dog dog=new Dog(); } }

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      public class Dog(){...}下列哪个选项可以是Dog类的构造方法 A: public Dog(){ } B: public void Dog(){ } C: public dog(){ } D: public void dog(){ }

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      对于下列Dog类,哪个叙述是错误的? class Dog { Dog(int m){ } Dog(double m){ } int Dog(int m){ return 23; } void Dog(double m){ } }

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      ______(Dog)dog is ______ useful animal.

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      中国大学MOOC: 下列Dog类,错误的描述是:class Dog{ Dog(int m){} Dog(double m){} int Dog(int m){ return 1;} void Dog(double m){}}