Java 数组集合 创建超市购物系统

package shopping;

public class Shop {
	//属性
	private String name;
	private int memberNo;  //会员卡号
	private String code;  //密码
	private int memberIntegral;  //会员积分
	private String date;  //开卡日期
	
	//get set
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getMemberNo() {
		return memberNo;
	}
	public void setMemberNo(int memberNo) {
		this.memberNo = memberNo;
	}
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	public int getMemberIntegral() {
		return memberIntegral;
	}
	public void setMemberIntegral(int memberIntegral) {
		this.memberIntegral = memberIntegral;
	}
	public String getDate() {
		return date;
	}
	public void setDate(String date) {
		this.date = date;
	}
	//构造方法
	public Shop() {
		
	}
	public Shop(String name, int memberNo, String code, int memberIntegral, String date) {
		super();
		this.name = name;
		this.memberNo = memberNo;
		this.code = code;
		this.memberIntegral = memberIntegral;
		this.date = date;
	}
	
	//重写to String
	@Override
	public String toString() {
		return "Shop [name=" + name + ", memberNo=" + memberNo + ", code=" + code + ", memberIntegral=" + memberIntegral
				+ ", date=" + date + "]";
	}

}

package shopping;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.linkedList;
import java.util.Scanner;
import java.util.List;


public class demo {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		//日期
		Date date = new Date();
		SimpleDateFormat formater = new SimpleDateFormat("yyyy- MM-dd HH:mm:ss");
		String now = formater.format(date);
//		System.out.println(now);
		// 假数据
		Shop s1 = new Shop("张三", 10001, "abc", 100, "2022- 01-23 10:12:07");
		Shop s2 = new Shop("李四", 10002, "abc", 200, "2022- 01-23 10:13:12");
		// 创建会员信息数组
		linkedList shopList = new linkedList<>();  
		//添加假数据
		shopList.add(s1);
		shopList.add(s2);
		
		// 编写系统
		do {
			int choice = 0;
			int a=0;
			System.out.println("******************************欢迎进入超市会员管理系统*******************************");
			System.out.print("1、积分累计 t");
			System.out.print("2、积分兑换 t");
			System.out.print("3、查询剩余积分 t");
			System.out.print("4、修改密码 t");
			System.out.print("5、开卡 t");
			System.out.println("6、退出");
			System.out.println("*****************************************************************************");
			System.out.println("请选择序号：");
			choice = input.nextInt();
			switch (choice) {
			case 1:
				System.out.println("请输入您的会员卡号：");
				int yourNo = input.nextInt();
				System.out.println("请输入您的密码：");
				String yourCode = input.next();
				System.out.println("请输入您此次消费金额(消费1元累计1积分)：");
				int yourPrice = input.nextInt();
				for(int i=0;i 
测试结果