代码实现如下：运行结果请自行查看

package com.biu.demo01;

public class MarketVipMgr {
	//姓名   会员卡号   密码   会员积分   开卡日期
	private String name;
	private int cardId;
	private String pwd;
	private int score;
	private String date;
	
	
	@Override
	public String toString() {
		return "MarketVipMgr [name=" + name + ", cardId=" + cardId + ", pwd=" + pwd + ", score=" + score + ", date="
				+ date + "]";
	}
	public MarketVipMgr() {
		super();
	}
	public MarketVipMgr(String name, int cardId, String pwd, int score, String date) {
		super();
		this.name = name;
		this.cardId = cardId;
		this.pwd = pwd;
		this.score = score;
		this.date = date;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getCardId() {
		return cardId;
	}
	public void setCardId(int cardId) {
		this.cardId = cardId;
	}
	public String getPwd() {
		return pwd;
	}
	public void setPwd(String pwd) {
		this.pwd = pwd;
	}
	public int getScore() {
		return score;
	}
	public void setScore(int score) {
		this.score = score;
	}
	public String getDate() {
		return date;
	}
	public void setDate(String date) {
		this.date = date;
	}
	
}

package com.biu.demo01;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.Random;
import java.util.Scanner;

public class MarketVipMgrDao {
	Scanner sc = new Scanner(System.in);
	ArrayList<MarketVipMgr> vipList = new ArrayList<MarketVipMgr>();
	
	//初始化
	public void init() {
		MarketVipMgr vip1 = new MarketVipMgr("张三",16542135,"123123",6666,"2019-09-19");
		MarketVipMgr vip2 = new MarketVipMgr("李四",65411231,"123123",6666,"2019-09-19");
		MarketVipMgr vip3 = new MarketVipMgr("王五",23156423,"123123",6666,"2019-09-19");
		vipList.add(vip1);
		vipList.add(vip2);
		vipList.add(vip3);
	}
	//菜单
	public void menu() {			
		System.out.println("*************************欢迎进入超市会员管理系统*************************");
		System.out.println("1.开卡\n2.积分累积\n3.积分兑换\n4.查询剩余积分\n5.修改密码\n6.销卡\n7.查看会员信息\n0.退出");
		System.out.println("*******************************************************************");
		System.out.print("请选择：");
	}
	//程序开始
	public void start() {
		menu();
		int  choose = sc.nextInt();
		switch (choose) {
		case 1:
			//1.开卡
			addCard();
			break;
		case 2:
			//2.积分累积
			scoreAdd();
			break;
		case 3:
			//3.积分兑换
			scoreConvert();
			break;
		case 4:
			//4.查询剩余积分
			queryScore();
			break;
		case 5:
			//5.修改密码
			updatePwd();
			break;
		case 6:
			//6.销卡
			delCard();
			break;
		case 7:
			//7.查看会员信息
			showInfo();
			break;
		case 0:
			//0.退出
			System.out.println("您已成功退出~");
			return;

		default:
			System.out.println("您的输入有误~");
			break;
		}
		System.out.println();
		start();
	}
	//1.开卡
	public void addCard() {
		MarketVipMgr vip = new MarketVipMgr();
		System.out.print("请输入注册姓名：");
		String name = sc.next();
		vip.setName(name);
		
		Random rd = new Random();
		int cardId = rd.nextInt(99999999);
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr.getCardId() == cardId) {
				cardId = rd.nextInt(99999999);
			}
		}
		vip.setCardId(cardId);
		
		System.out.print("请输入注册密码：");
		String pwd = "";
		boolean flag = false;
		do {
			pwd = sc.next();
			if(pwd.length()<6) {
				System.out.println("会员密码不能小于6位！请重新输入密码：");
			}else {
				vip.setPwd(pwd);
				flag = true;
			}
		} while (!flag);
		
		vip.setScore(100);//开卡送100分
		
		Date date = new Date();
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		String fdate = format.format(date);
		vip.setDate(fdate);
		
		System.out.println("恭喜您开卡成功！系统送您100积分，您的会员卡号是：" + cardId + "， 开卡日期为： " + vip.getDate());
		
		vipList.add(vip);
	}
	//2.积分累积
	public void scoreAdd() {
		boolean flag = false;
		System.out.print("请输入会员卡号：");
		int cardId = sc.nextInt();
		System.out.print("请输入会员卡密码：");
		String pwd = sc.next();
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr != null && cardId == marketVipMgr.getCardId() && pwd.equals(marketVipMgr.getPwd())) {
				flag = true;
				
				System.out.print("请输入您的消费金额(一元一分)：");
				int score = sc.nextInt();
				marketVipMgr.setScore(score + marketVipMgr.getScore());
				System.out.println("积分累积成功~");
				
				break;
			}
		}
		if(!flag) {
			System.out.println("您的卡号或密码有误~");
		}
	}
	//3.积分兑换
	public void scoreConvert() {
		boolean flag = false;
		System.out.print("请输入会员卡号：");
		int cardId = sc.nextInt();
		System.out.print("请输入会员卡密码：");
		String pwd = sc.next();
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr != null && cardId == marketVipMgr.getCardId() && pwd.equals(marketVipMgr.getPwd())) {
				flag = true;
				
				System.out.print("请输入您需要兑换使用的积分（100积分抵用0.1元，不足100的积分不做抵用）：");
				int score = sc.nextInt();
				if(score <= marketVipMgr.getScore()) {
					marketVipMgr.setScore(marketVipMgr.getScore() - score);
					System.out.println("您使用会员积分兑换了："+score/100*0.1+"元");
				}else {
					System.out.println("您的积分不足，无法兑换~");
				}
				
				break;
			}
		}
		if(!flag) {
			System.out.println("您的卡号或密码有误~");
		}
	}
	//4.查询剩余积分
	public void queryScore() {
		boolean flag = false;
		System.out.print("请输入会员卡号：");
		int cardId = sc.nextInt();
		System.out.print("请输入会员卡密码：");
		String pwd = sc.next();
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr != null && cardId == marketVipMgr.getCardId() && pwd.equals(marketVipMgr.getPwd())) {
				flag = true;
				
				System.out.println("您的剩余积分为：" + marketVipMgr.getScore());
				
				break;
			}
		}
		if(!flag) {
			System.out.println("您的卡号或密码有误~");
		}
	}
	//5.修改密码
	public void updatePwd() {
		boolean flag = false;
		System.out.print("请输入会员卡号：");
		int cardId = sc.nextInt();
		System.out.print("请输入会员卡密码：");
		String pwd = sc.next();
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr != null && cardId == marketVipMgr.getCardId() && pwd.equals(marketVipMgr.getPwd())) {
				flag = true;
				
				boolean isSame = false;
				do {
					System.out.print("请输入新密码：");
					String newPwd1 = sc.next();
					System.out.print("请再次输入新密码：");
					String newPwd2 = sc.next();
					if(newPwd1.equals(newPwd2) && newPwd1.length()>=6) {
						marketVipMgr.setPwd(newPwd1);
						System.out.println("密码修改成功~");
						isSame = true;
					}else {
						System.out.println("两次输入的密码不一致或长度不足6位，请重新输入~");
					}
				} while (!isSame);
				
				break;
			}
		}
		if(!flag) {
			System.out.println("您的卡号或密码有误~");
		}
	}
	//6.销卡
	public void delCard() {
		boolean flag = false;
		System.out.print("请输入会员卡号：");
		int cardId = sc.nextInt();
		System.out.print("请输入会员卡密码：");
		String pwd = sc.next();
		for (MarketVipMgr marketVipMgr : vipList) {
			if(marketVipMgr != null && cardId == marketVipMgr.getCardId() && pwd.equals(marketVipMgr.getPwd())) {
				flag = true;
				vipList.remove(marketVipMgr);
				System.out.println("销卡成功~");
				
				break;
			}
		}
		if(!flag) {
			System.out.println("您的卡号或密码有误~");
		}
	}
	//7.查看会员信息
	public void showInfo() {
	//三种ArrayList的遍历方式
		Iterator<MarketVipMgr> iterator = vipList.iterator();
		while (iterator.hasNext()) {
			System.out.println(iterator.next());
		}
//		for(int i=0; i<vipList.size(); i++) {
//			System.out.println(vipList.get(i));
//		}
//		for (MarketVipMgr marketVipMgr : vipList) {
//			System.out.println(marketVipMgr);
//		}
	}
}

package com.biu.demo01;

public class Test {
public static void main(String[] args) {
MarketVipMgrDao mgr = new MarketVipMgrDao();
mgr.init();
mgr.start();
}
}