Java實現發紅包功能
阿新 • • 發佈:2020-11-27
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程式碼的架構是什麼,需要什麼類組成等。
我們需要建立4個類,這4個類分別是使用者類、群主類、成員類,執行類;
因為群主類和成員類都有共同的特點--------擁有名字和餘額,所以需要使用者類去儲存名字與餘額
第一步:我們需要建立一個使用者類,裡面儲存的是名字和餘額
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使用者類
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使用者類
package Java.RedPacketCode; import java.util.ArrayList; import java.util.Random; public class MemberClass extends UserClass { public MemberClass(String 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:我們需要建立一個執行類,用來執行程式碼
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,也希望大家多多支援我們。