Java实现发红包功能

Java实现发红包功能

java发红包案例，供大家参考，具体内容如下

首先我们需要分析这个代码的架构是什么，需要什么类组成等。

我们需要建立4个类，这4个类分别是用户类、群主类、成员类，运行类；

因为群主类和成员类都有共同的特点--------拥有名字和余额，所以需要用户类去存储名字与余额

第一步：我们需要建立一个用户类，里面存储的是名字和余额

package Java.RedPacketCode;

public class UserClass {

private String name;

private int balance;

public UserClass(String name, int balance) {

this.name = name;

this.balance = balance;

}

public void setName(String name) {

this.name = name;

}

public String getName() {

return name;

}

public void setBalance(int balance) {

this.balance = balance;

}

public int getBalance() {

return balance;

}

public void show() {

System.out.println("Name:" + name + "****" + "RMB:" + balance);

}

}

第二步：我们需要一个群主类去继承用户类

package Java.RedPacketCode;

import java.util.ArrayList;

public class GroupMainClass extends UserClass {

public GroupMainClass(String name, int balance) {

super(name, balance);

}

public ArrayList handOutRedEnvelopes(int amountRequired, int count) {

int existingAmount = super.getBalance();

if (existingAmount < amountRequired) {

System.out.println("Your balance is insufficient!");

}

int money=existingAmount-amountRequired;

super.setBalance(money);

System.out.println(super.getName()+" has"+money+" yuan left");

int avg = amountRequired / count;

int remainder = amountRequired % count;

int decimal = avg + remainder;

ArrayList list = new ArrayList<>();

for (int i = 0; i < count - 1; i++) {

list.add(avg);

}

list.add(decimal);

return list;

}

}

第三步：我们需要建立一个成员类去继承用户类

package Java.RedPacketCode;

import java.util.ArrayList;

import java.util.Random;

public class MemberClass extends UserClass {

public MemberClass(String name, int balance) {

super(name, balance);

}

public void redEnvelopes(ArrayList list) {

Random r = new Random();

int index = r.nextInt(list.size());

int money = list.remove(index);

int existingAmount = super.getBalance();

int totalAmount = money + existingAmount;

super.setBalance(totalAmount);

}

}

第四步：我们需要建立一个运行类，用来运行代码

package Java.RedPacketCode;

import java.util.ArrayList;

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

GroupMainClass gmc = new GroupMainClass("Groupleader", 200);

gmc.show();

MemberClass mc1 = new MemberClass("Tom", 0);

MemberClass mc2 = new MemberClass("Jackhttp://", 0);

MemberClass mc3 = new MemberClass("Jenny", 0);

UserClass arrays[] = {mc1, mc2, mc3};

for (int i = 0; i < arrays.length; i++) {

arrays[i].show();

}

System.out.println("==================");

Scanner scanner = new Scanner(System.in);

System.out.println("How much would you like to send");

int money = scanner.nextInt();

System.out.println("How many red packets would you like to send");

int count = scanner.nextInt();

ArrayList list = gmc.handOutRedEnvelopes(money, count);

mc1.redEnvelopes(list);

mc2.redEnvelopes(list);

mc3.redEnvelopes(list);

for (int i = 0; i < arrays.length; tdpRbEi++) {

arrays[i].show();

}

}

}

希望大佬们多多指教。

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