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最新推荐文章于 2024-09-14 22:51:46 发布

原创最新推荐文章于 2024-09-14 22:51:46 发布 · 277 阅读

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第5章 4编程题

设计一个动物声音“模拟器”，希望模拟器可以模拟许多动物的叫声

public abstract class Animal {  
    abstract void cry();  
    abstract String getAnimalName();  
}  

public class Dog extends Animal{  
  
      
    void cry() {  
        // TODO Auto-generated method stub  
        System.out.println("wangwang!");  
    }  
    String getAnimalName() {  
        // TODO Auto-generated method stub  
        return "狗";  
    }  
}  

public class Cat extends Animal{  
  
    @Override  
    void cry() {  
        // TODO Auto-generated method stub  
        System.out.println("miao~");  
    }  
  
    @Override  
    String getAnimalName() {  
        // TODO Auto-generated method stub  
        return "è";  
    }  
  
}  

public class Simulator {  
    void playSound(Animal animal){  
        System.out.println(animal.getAnimalName()+"的声音");  
        animal.cry();     
    }  
}  

public class Application {  
  
    public static void main(String[] args) {  
        // TODO Auto-generated method stub  
        Simulator simulator = new Simulator();  
        simulator.playSound(new Dog());  
        simulator.playSound(new Cat());  
    }  
  
}