Java實現發紅包案例

使用Java實現發紅包的功能。

結構：

package redPocket

User.java

Manager.java

Member.java

Test.java

思路：

Manager和Member類繼承User，Manager類實現羣主發紅包的功能，Member類實現羣員收紅包的功能。Test測試代碼。

代碼：

package redPacket;

public class User {
	private String name;
	private int money;
	public User() {
		
	}
	public User(String name,int money) {
		this.name=name;
		this.money=money;
	}
	public void setName(String name) {
		this.name=name;
	}
	public String getName() {
		return name;
	}
	public void setMoney(int money) {
		this.money=money;
	}
	public int getMoney() {
		return money;
	}
	public void show() {
		System.out.println("我叫"+name+",我的餘額是"+money);
	}
}

package redPacket;

import java.util.ArrayList;

public class Manager extends User{
	public Manager() {
		super();//贈送的super
	}
	public Manager(String name,int money) {
		super(name,money);
	}
	public ArrayList<Integer> Send(int totol,int count){
		ArrayList<Integer> redList=new ArrayList<Integer>();
		if(totol>super.getMoney()) {
			System.out.println("餘額不足");
			return redList;
		}
		super.show();
		super.setMoney(super.getMoney()-totol);
		int avg=totol/count;
		int mod=totol%count;
		for(int i=0;i<count-1;i++) {
			redList.add(avg);
		}
		int last=avg+mod;
		redList.add(last);
		
		return redList;
	}
	
}

package redPacket;

import java.util.ArrayList;
import java.util.Random;

public class Member extends User{
	public Member() {
		
	}
	public Member(String name,int money){
		super(name,money);
	}
	public void receive(ArrayList<Integer> arrayList) {
		int index=new Random().nextInt(arrayList.size());
		int getmoney=arrayList.remove(index);
		super.setMoney(super.getMoney()+getmoney);
		
	}

}

package redPacket;

import java.util.ArrayList;

public class Test {

	public static void main(String[] args) {
		Manager manager=new Manager("羣主",100);
		Member member1=new Member("mem1",0);
		Member member2=new Member("mem2",0);
		Member member3=new Member("mem3",0);
		ArrayList<Integer> arrayList = manager.Send(20, 3);
		member1.receive(arrayList);
		member2.receive(arrayList);
		member3.receive(arrayList);
		member1.show();
		member2.show();
		member3.show();
	}

}