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<Integer> 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<Integer> 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<Integer> 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("Jack", 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<Integer> list = gmc.handOutRedEnvelopes(money, count); mc1.redEnvelopes(list); mc2.redEnvelopes(list); mc3.redEnvelopes(list); for (int i = 0; i < arrays.length; i++) { arrays[i].show(); } }}

希望大佬们多多指教。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。