类的继承之发红包的案例----Java

群主发普通红包

群主发普通红包。某群有多名成员，群主给成员发普通红包。普通红包的规则：
　　1. 群主的一笔金额，从群主余额中扣除，平均分成n等份，让成员领取。
　　2. 成员领取红包后，保存到成员余额中。
请根据描述，完成案例中所有类的定义以及指定类之间的继承关系，并完成发红包的操作。

public class User {

    private String name ;  //姓名
    private int money ;  //金额

    public User() {
    }

    public User(String name, int money) {
        this.name = name;
        this.money = money;
    }
    // 展示当前用户有多少钱
    public void show(){
        System.out.println("姓名：" + name +"    余额：" + money);
    }
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getMoney() {
        return money;
    }

import java.util.ArrayList;

public class Manager extends User{

    public Manager(){
        //super();默认赠送
    }

    public Manager(String name, int money) {
        super(name, money);
    }


    public ArrayList<Integer> send(int totalMoney, int count){

        ArrayList<Integer> redList = new ArrayList<>();
        //首先看一下，群主有多少钱
        //int leftMoney = super.money;  错误写法
        int leftMoney = super.getMoney();
        if(leftMoney < totalMoney){
            System.out.println("余额不足");
            return redList; //返回空集合
        }
        //扣钱，其实就是重新设置余额
        super.setMoney(leftMoney - totalMoney);

        //发红包，平均发成count份
        int avg = totalMoney / count;
        int mod = totalMoney % count;

        //除不开的零头放在最后一个红包中
        //下面吧红包放在集合中
        for (int i = 0; i < count-1; i++) {
            redList.add(avg);
        }
        //最后一个红包
        int last = avg + mod;
        redList.add(last);

        return redList;
    }
}

import java.util.ArrayList;
import java.util.Random;

public class Member extends User{

    public Member() {
    }

    public Member(String name, int money) {
        super(name, money);
    }

    public void receive(ArrayList<Integer> list){
        //从众多红包中抽取一个给自己
        //随机获取一个集合当中的索引编号
        int index = new Random().nextInt(list.size());
        //根据索引从集合中删除,并把删除的红包给自己
        int delta = list.remove(index);

        //当前成员自己有多少钱
        int money = super.getMoney();
        //领了红包后多少钱
        super.setMoney(money + delta);
    }
}

import java.util.ArrayList;

public class MainRedPacket {

    public static void main(String[] args) {
        Manager manager = new Manager("群主", 200);

        Member one = new Member("成员A", 0);
        Member two = new Member("成员B", 0);
        Member three = new Member("成员C", 0);
        Member four = new Member("成员D", 0);
        Member five = new Member("成员E", 0);
        Member six = new Member("成员F", 0);

        manager.show();
        one.show();
        two.show();
        three.show();
        four.show();
        five.show();
        six.show();
        System.out.println("==========");


        //群主开始发红包
        ArrayList<Integer> redList = manager.send(168, 6);
        one.receive(redList);
        two.receive(redList);
        three.receive(redList);
        four.receive(redList);
        five.receive(redList);
        six.receive(redList);

        //领完红包后，各自金额多少
        manager.show();
        one.show();
        two.show();
        three.show();
        four.show();
        five.show();
        six.show();
        System.out.println("==========");
    }

}