Java中 方法的多态 简析图

代码如下:

public class Client{
    public static void main(String[] args){
        Person p = new Person();
        Dog d = new Dog();
        Cat c = new Cat();

        p.feed(d);

    }

}

public class Person{      

    public void feed(Animal a){
        a.eat();
    }

}

public class Animal{
    public void eat(){
    }
}

public class Dog extends Animal{
    //Method
    public void eat(){
        System.out.println( "狗吃肉" );
    }
}

时间仓促,如有遗漏,敬请指教!