package com.huawei;

public class Demo2 {

	public static void main(String[] args) {

		creatMethod(new Cat());

	}

	public static void creatMethod(Animal a){

		if(a instanceof Cat){

			Cat c=(Cat)a;

			c.catchrat();

		}else if(a instanceof Dog){

			Dog d=(Dog)a;

			d.shout();

		}

	}

}

class Animal{

	public void eat(){

		System.out.println("動物吃");

	}

}

class Cat extends Animal {

	public void eat() {

		System.out.println("貓吃");

	}

	public void catchrat(){

		System.out.println("貓抓老鼠");

	}

}

class Dog extends Animal{

	public void eat() {

		System.out.println("狗吃");

	}

	public void shout () {

		System.out.println("狗叫");

	}

}