本文实例为大家分享了java实现简单发红包的具体代码，供大家参考，具体内容如下

这个案例是普通红包，均分的，不是拼手气红包。

package nuc.edu.day01.demo05;/** * @author Administrator * 用户类 */public class User { private String name; private Double money; public User() { } //显示当前余额 public void show(){ System.out.println(name + "当前的余额为：" + money); } public User(String name, Double money) { this.name = name; this.money = money; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Double getMoney() { return money; } public void setMoney(Double money) { this.money = money; }}package nuc.edu.day01.demo05;import java.util.ArrayList;/** * @author Administrator * 群主发红包的操作 */public class Manager extends User { public Manager() { } public Manager(String name, Double money) { super(name, money); } /**定义发红包的方法 * totalMoney：发红包的总金额 * num：发红包的个数*/ public ArrayList<Double> send(double totalMoney,int num){ /**存放红包的集合*/ ArrayList<Double> redList = new ArrayList<>(); /**当前余额*/ double leftMoney = super.getMoney(); if (leftMoney < totalMoney){ System.out.println("抱歉，您的余额不足"); return redList; } /**发完红包的余额*/ super.setMoney(leftMoney-totalMoney); /**将钱平均存入每个红包中*/ double avg = totalMoney / num; for (int i = 0; i < num; i++) { redList.add(avg); } return redList; }}package nuc.edu.day01.demo05;import java.util.ArrayList;import java.util.Random;/** * @author Administrator * 群内成员抢红包的操作 */public class Member extends User { public Member() { } public Member(String name, Double money) { super(name, money); } /**定义收红包的方法*/ public void receive(ArrayList<Double> list){ /**创建随机红包对应的索引*/ int index = new Random().nextInt(list.size()); /**当前余额*/ double money = super.getMoney(); /**根据索引将自己抢到的红包删掉*/ double delta = list.remove(index); /**领完红包后的余额*/ super.setMoney(money+delta); }}package nuc.edu.day01.demo05;import java.util.ArrayList;/** * @author Administrator */public class Main { public static void main(String[] args) { Manager manager = new Manager("群主",300.00); Member a = new Member("A",0.00); Member b = new Member("B",10.00); /**显示当前余额*/ manager.show(); a.show(); b.show(); System.out.println("============"); ArrayList<Double> redList = manager.send(52.00,2); a.receive(redList); b.receive(redList); /**显示抢完红包后的余额*/ manager.show(); a.show(); b.show(); }}

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