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 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 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 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腳本之家。

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