Java發紅包案例，供大家參考，具體內容如下

首先我們需要分析這個代碼的架構是什么，需要什么類組成等。我們需要建立4個類，這4個類分別是用戶類、群主類、成員類，運行類；因為群主類和成員類都有共同的特點--------擁有名字和余額，所以需要用戶類去存儲名字與余額

第一步：我們需要建立一個用戶類，里面存儲的是名字和余額

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：我們需要一個群主類去繼承用戶類

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：我們需要建立一個成員類去繼承用戶類

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：我們需要建立一個運行類，用來運行代碼

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(); } }}

希望大佬們多多指教。

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。