动物类

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

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

}

public class Simulator {
	  void playSound(Animal animal){
		animal.cry();
		animal.getAnimalName();
	}

}

public  class Dog extends Animal{
	@Override
	String getAnimalName() {
		// TODO Auto-generated method stub
		String name="旺旺";
		System.out.println("我叫:"+name+"我的叫声是：");
		return null;
	}
	void cry(){
		System.out.println("汪汪");
		
	}

}

public class Cat extends Animal {
	@Override
	String getAnimalName() {
		// TODO Auto-generated method stub
		String name="咪咪";
		System.out.println("我叫："+name+"我的叫声是：");
		return null;
	}
	void cry(){
		System.out.println("喵喵");
	}

}