//超市会员类public class Member {//姓名 卡号 卡密 积分 开卡日期private String name;private int cardId;private String password;private int score;private String registDate;public Member(){}//构造方法public Member(String name,int cardId,String password,int score,String registDate){super();this.name = name;this.cardId = cardId;this.password = password;this.score = score;this.registDate = registDate;}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 getPassword() {return password;}public void setPassword(String password) {this.password = password;}public int getScore() {return score;}public void setScore(int score) {this.score = score;}public String getRegistDate() {return registDate;}public void setRegistDate(String registDate) {this.registDate = registDate;}}import java.text.SimpleDateFormat;import java.util.*;//会员管理类public class MenberMgr {//所有会员卡List<Member> memberList = new ArrayList<Member>();//使用泛型规定数据类型Scanner input = new Scanner(System.in);//输出欢迎菜单public void menu() {System.out.println("**************欢迎使用梦虎超市会员管理系统***********");System.out.println("1,开卡 2,修改密码 3，积分累计 4，积分兑换 5，剩余积分查询 6，退出");System.out.println("***********************************************");System.out.print("请选择： ");}//搭建项目流程public void start() {do {menu();int choose = input.nextInt();switch (choose) {case 1:register();continue;case 2:if (changpwd()) {System.out.println("新密码设置成功！");}continue;case 3:if (saveScore()) {System.out.println("你的积分累积成功!");}continue;case 4:if (minusScore()) {System.out.println("积分兑换成功！");}continue;case 5:showScore();continue;case 6:System.out.println("感谢使用，欢迎下次使用！");break;default:System.out.println("你操作有误 请重新选择");}break;} while (true);}//系统随机生成一个会员卡号public int createId() {Random random = new Random();int id = random.nextInt(99999999);//保证生成的会员卡号不能和之前的会员卡号重复for (Member m : memberList) {if (m.getCardId() == id) {id = random.nextInt(99999999);}}return id;}//开卡public void register() {Member member = new Member();System.out.print("请输入注册姓名：");member.setName(input.next());System.out.print("请输入密码：");//会员密码不能低于6位String pwd;boolean flag = true;//输入会员密码是否格式正确do {pwd = input.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：");flag = false;} else {flag = true;member.setPassword(pwd);}} while (!flag);member.setCardId(createId());member.setScore(100);//开卡日期Date date = new Date();SimpleDateFormat format = new SimpleDateFormat("MM月dd日");String cardDate = format.format(date);member.setRegistDate(cardDate);//将注册成功的会员添加到会员集合中，并提示开卡成功memberList.add(member);System.out.println("恭喜开卡成功！系统赠送你100积分，你的会员卡号是" + member.getCardId());}//验证会员是否存在//查询条件（会员卡号和密码）--封装在参数m中传过来public Member hasMember(Member m) {Member member = null;for (Member everyMember : memberList) {if (m.getCardId() == everyMember.getCardId()&& m.getPassword().equals(everyMember.getPassword())) {//找到了会员，说明会员已经存在member = everyMember;}}return member;}//修改密码public boolean changpwd() {boolean flag = true;//密码是否成功Member member = new Member();System.out.println("请输入你的会员卡号：");member.setCardId(input.nextInt());System.out.println("请输入你的会员密码：");member.setPassword(input.next());member = hasMember(member);//member找到就是返回的会员对象 如果找不到返回的就是member的nullif (member != null) {//会员卡号和密码正确，找到了该会员，允许修改密码System.out.print("请输入新的会员密码：");String pwd;boolean flagpwd = true;//新设置的密码格式是否正确do {pwd = input.next();if (pwd.length() < 6) {System.out.print("会员密码不能小于6，请重新输入会员密码");flagpwd = false;} else {System.out.println("你输入的会员卡号或者密码错误，无法修改密码");flag = true;//密码修改成功flagpwd = true;//新设置的会员密码格式正确}} while (!flagpwd);} else {System.out.println("你输入的会员卡号或密码不正确，无法修改密码");flag = false;}return flag;}// 积分统计public boolean saveScore() {boolean flag = true;//累计积分是否成功Member member = new Member();System.out.println("请输入会员卡号：");member.setCardId(input.nextInt());System.out.println("请输入会员密码：");member.setPassword(input.next());member = hasMember(member);//member如果找到 就是找到了会员对象，找不到 member是nullif (member != null) {//该会员存在System.out.println("请输入你此次消费的金额：");int score = input.nextInt();member.setScore(member.getScore() + score);} else {System.out.println("你输入的会员卡号或密码错误，无法累计积分");flag = false;}return false;}//积分查询public void showScore() {Member member = new Member();System.out.println("请输入你的会员卡号");member.setCardId(input.nextInt());System.out.println("输入你的密码：");member.setPassword(input.next());member = hasMember(member);//member找到就是会员对象，找不到member是nullif (member != null) {System.out.println("姓名\t会员卡号\t\t剩余积分\t开卡日期");System.out.println(member.getName() + "\t" + member.getCardId() + "\t" + member.getScore() + "\t");} else {System.out.println("你输入的会员卡号错误，无法查询");}}//积分兑换public boolean minusScore() {boolean flag = true;//积分兑换是否顺利完成Member member = new Member();System.out.println("请输入会员卡号：");member.setCardId(input.nextInt());System.out.println("请输入会员密码：");member.setPassword(input.next());member = hasMember(member);//member如果找到 就是找到了会员对象，找不到 member是nullif (member != null) {System.out.println("请输入你要兑换的积分");int score = input.nextInt();//对会员想要兑换的积分做判断if (score < member.getScore()) {//能兑换member.setScore(member.getScore() - score);System.out.println("你的消费金额中使用会员积分抵扣了" + score / 100 * 0.1 + "元");flag = true;}} else {System.out.println("抱歉，你的积分不够，无法使用");flag = false;}return flag;}}测试类//测试类 程序入口public class Test {public static void main(String[] args) {MenberMgr mgr = new MenberMgr();mgr.start();}}
