public abstract class Animal {
	private int leg;
	private String animClass;
	protected Animal(int _leg,String _animClas) {
		this.leg = _leg;
		this.animClass = _animClas;
	}
	
	public abstract void eat();
	
	public void walk() {
		System.out.println("这是只"+this.animClass);
		System.out.println("它用"+this.leg+"条腿走路");	
	}

}

public class Spider extends Animal{

	protected Spider() {
		super(8, "蜘蛛");
		// TODO Auto-generated constructor stub
	}

	public void eat() {
		System.out.println("它喜欢吃虫子");
	};
}

public class Cat extends Animal implements UML{
	private String name;
	protected Cat(String _name) {
		super(4, "小猫");
		this.name = _name;
	}
	protected Cat() {
		super(4, "小猫");
	}
	
	@Override
	public void eat() {
		System.out.println("他喜欢吃小鱼");
	}
	@Override
	public void getName() {
		if(this.name != null) {
			System.out.println("它叫"+this.name);
		}else {
			System.out.println("它目前还没有名字");			
		}
		
	}
	@Override
	public void setNmae(String _name) {
		System.out.println("我给它取了一个名字");
		this.name = _name;
	}
	@Override
	public void play() {
		System.out.println("我非常喜欢跟它躲猫猫！");
	}

}

public class Fish extends Animal implements UML {
	private String name;
	protected Fish() {
		super(0, "小鱼");
		// TODO Auto-generated constructor stub
	}

	@Override
	public void getName() {
		if(this.name != null) {
			System.out.println("它叫"+this.name);
		}else {
			System.out.println("它目前还没有名字");			
		}
	}

	@Override
	public void setNmae(String _name) {
		System.out.println("我给它取了一个名字");
		this.name = _name;
	}

	@Override
	public void play() {
		System.out.println("它只会在水里游泳，不会跟我玩！");		
	}

	@Override
	public void eat() {
		System.out.println("他喜欢吃鱼实");	
	}
	
	public void walk() {
		System.out.println("这是只小鱼");
		System.out.println("它用不能走路，只能游泳");			
	}

}

public interface UML {
	void getName();
	void setNmae(String name);
	void play();
}

public class MainRoot {

	public static void main(String[] args) {
		
		MainRoot role = new MainRoot();
		
		Spider spider = new Spider();
		
		Cat cat = new Cat();
		
		Fish fish = new Fish();
		
		spider.walk();
		spider.eat();
		System.out.println("--------------------------------");			
		cat.walk();
		cat.eat();
		role.getName(cat);
		role.setName(cat, "小花");
		role.getName(cat);
		role.play(cat);
		System.out.println("--------------------------------");				
		fish.walk();
		fish.eat();
		role.getName(fish);
		role.setName(fish, "小金金");
		role.getName(fish);
		role.play(fish);		

	}
	
	public void play(UML m) {
		m.play();
	}
	
	public void setName(UML m,String _name) {
		m.setNmae(_name);
	}
	
	public void getName(UML m) {
		m.getName();
	}

}