Java 动物声音“模拟器”（用接口实现）

(1)编写接口Animal (Animal.java)

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

(2)编写模拟类Simulator (Simulator.java)

public class Simulator {
    public void playSound(Animal animal) {
        System.out.print("正在播放模拟" + animal.getAnimalName() +"的声音：");
        animal.cry();
    }
}

(3)编写Dog类和Cat类 (Dog.java、Cat.java)
Dog类：

public class Dog implements Animal{
    public void cry(){
        System.out.println("汪汪汪");
    }
    public String getAnimalName(){
        return "狗";
    }
}

Cat类：

public class Cat implements Animal{
    public void cry(){
        System.out.println("喵喵喵");
    }
    public String getAnimalName(){
        return "猫";
    }
}

(4)编写主类Application (Application.java)

public class Application{
    public static void main(String[] args) {
        Simulator simulator = new Simulator();
        simulator.playSound(new Dog());
        simulator.playSound(new Cat());
    }
}