Java超详细讲解多态的调用

package com.ytzl.total;
/*多态*/
public class polymorphic {
    public static void main(String[] args) {
        //使用纯纯的调用来测试
        fathers fathers = new fathers();//调用父类
        Eldestson eldestson = new Eldestson();//调用大儿子类
        youngestson youngestson = new youngestson();//调用小儿子类
        fathers.eat();//正常调用
        eldestson.eat();//正常待用
        youngestson.eat();//正常调用
        System.out.println("\n");
        //使用多态来测试
        fathers eldestson1 = new Eldestson();///子类对象的地址值交给父类的eldestson1来保存
        fathers youngestson1 = new youngestson();//子类对象的地址值交给父类的youngestson1来保存
        eldestson1.eat();//多态调用
        youngestson1.eat();//多态调用
        eldestson1.setMoney(100);//通过多态去赋值
        eldestson1.setName("小明");//通过多态去赋值
        youngestson1.setMoney(50);//通过多态去赋值
        youngestson1.setName("小张");//通过多态去赋值
        eldestson1.money();//通过多态以子类去获取父类方法
        youngestson1.money();//通过多态以子类去获取父类方法
    }
}

package com.ytzl.total;
/*父类*/
public class fathers {
    private int money;
    private String name;
    public fathers() {
    }
    public fathers(int money, String name) {
        this.money = money;
        this.name = name;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getMoney() {
        return money;
    }
    public void setMoney(int money) {
        this.money = money;
    }
    public void eat(){
        System.out.println("我是父类,我老了牙坏了不能吃硬的。");
    }
    public void money(){
        System.out.println("父类给了"+name+money+"元");
    }
}

package com.ytzl.total;
/*大儿类*/
public class Eldestson extends fathers{
    public void eat(){
        System.out.println("我是大儿子类,我还年轻我胃口好牙好什么都能吃。");
    }
}

package com.ytzl.total;
/*小儿子类*/
public class youngestson extends fathers{
    public void eat(){
        System.out.println("我是小儿子类,我还小我牙都没长齐不能吃太硬的。");
    }
}