基於java實現簡單發紅包功能
阿新 • • 發佈:2020-11-27
本文例項為大家分享了java實現簡單發紅包的具體程式碼,供大家參考,具體內容如下
這個案例是普通紅包,均分的,不是拼手氣紅包。
package nuc.edu.day01.demo05; /** * @author Administrator * 使用者類 */ public class User { private String name; private Double money; public User() { } //顯示當前餘額 public void show(){ System.out.println(name + "當前的餘額為:" + 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 * 群主發紅包的操作 */ public class Manager extends User { public Manager() { } public Manager(String name,Double money) { super(name,money); } /**定義發紅包的方法 * totalMoney:發紅包的總金額 * num:發紅包的個數*/ public ArrayList<Double> send(double totalMoney,int num){ /**存放紅包的集合*/ ArrayList<Double> redList = new ArrayList<>(); /**當前餘額*/ double leftMoney = super.getMoney(); if (leftMoney < totalMoney){ System.out.println("抱歉,您的餘額不足"); return redList; } /**發完紅包的餘額*/ super.setMoney(leftMoney-totalMoney); /**將錢平均存入每個紅包中*/ 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 * 群內成員搶紅包的操作 */ public class Member extends User { public Member() { } public Member(String name,money); } /**定義收紅包的方法*/ public void receive(ArrayList<Double> list){ /**建立隨機紅包對應的索引*/ int index = new Random().nextInt(list.size()); /**當前餘額*/ double money = super.getMoney(); /**根據索引將自己搶到的紅包刪掉*/ double delta = list.remove(index); /**領完紅包後的餘額*/ 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); /**顯示當前餘額*/ manager.show(); a.show(); b.show(); System.out.println("============"); ArrayList<Double> redList = manager.send(52.00,2); a.receive(redList); b.receive(redList); /**顯示搶完紅包後的餘額*/ manager.show(); a.show(); b.show(); } }
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。