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package day09;
/*
* A:多态(PolyMorphic)概述
* 事物存在多种形态
* B:多态前提
* a:要有继承关系
* b:要有方法重写
* c:要有父类引用指向之类对象
* */
public class PolyMorphic {
public static void main(String[]args){
cat c=new cat();
c.eat();
Ainmal a=new cat();//父类引用指向子类对象
a.eat();
}
}
class Ainmal{
public void eat(){
System.out.println("动物吃饭");
}
}
class cat extends Ainmal{
public void eat(){
System.out.println("猫吃鱼");
}
}