• 超市会员系统


    会员类

    public class Member {
    //姓名 会员卡号 密码 会员积分
    private String name;//会员卡名字
    private int cardId;//会员卡号
    private String password;//会员卡密码
    private int score;//会员卡积分
    //开卡日期
    private String registDate;

    public Member() {
    }
    public Member(String name, int cardId, String password, int score) {
    this.name = name;
    this.cardId = cardId;
    this.password = password;
    this.score = score;
    }

    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 getRegistDate() {
    return registDate;
    }
    public void setRegistDate(String registDate) {
    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;
    }
    }

    ----------------------------------------------------------------------------------------

    实现类

    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.List;
    import java.util.Random;
    import java.util.Scanner;
    public class MemberDao {
    Scanner input = new Scanner(System.in);
    List<Member> memberList = new ArrayList<Member>();

    public void menu(){
    System.out.println("*************************欢迎进入超市会员管理系统*************************");
    System.out.println("1.积分累计 2.积分兑换 3.查询剩余积分 4.修改密码 5.开卡 6.退出");
    System.out.println("*******************************************************************");
    System.out.print("请选择:");
    }

    public void start(){
    do{
    menu();
    int choose = input.nextInt();
    switch(choose){
    case 1:
    if (saveScore()) {
    System.out.println("积分累计成功!");
    } else {
    System.out.println("积分累计失败!");
    }
    continue;
    case 2:
    if (minusScore()) {
    System.out.println("积分兑换成功!");
    } else {
    System.out.println("积分兑换失败!");
    }
    continue;
    case 3:
    showScore();
    continue;
    case 4:
    if (changePwd()) {
    System.out.println("密码修改成功!");
    } else {
    System.out.println("密码修改失败!");
    }
    continue;
    case 5:
    register();
    continue;
    case 6:
    System.out.println("感谢您的使用,欢迎下次使用!");
    break;
    default:
    System.out.println("您的操作有误,请重新选择:");
    continue;
    }
    break;
    }while(true);
    }

    //查询会员是否存在,会员密码不区分大小写
    public Member hasMember(Member member){
    if(member.getPassword()!=null){
    for (int i = 0; i < memberList.size(); i++) {
    if(memberList.get(i).getCardId()==member.getCardId() && memberList.get(i).getPassword().equalsIgnoreCase(member.getPassword())){
    return memberList.get(i);
    }
    }
    }else{
    for (int i = 0; i < memberList.size(); i++) {
    if(memberList.get(i).getCardId()==member.getCardId()){
    return memberList.get(i);
    }
    }
    }
    return null;
    }

    //修改会员密码
    public boolean changePwd(){
    Member member=new Member();
    System.out.print("请输入您的会员卡号:");
    member.setCardId(input.nextInt());
    System.out.print("请输入您的会员卡密码:");
    member.setPassword(input.next());
    if((member=hasMember(member))!=null){
    System.out.print("请输入新的会员密码:");
    //新的会员密码不能小于6位
    String pwd;
    boolean flag = true;
    do{
    pwd = input.next();
    if(pwd.length()<6){
    System.out.print("会员密码不能小于6位,请重新输入会员密码:");
    flag = false;
    }else{
    flag = true;
    member.setPassword(pwd);
    }
    }while(!flag);
    return true;
    }else{
    System.out.println("您输入的会员卡号或密码错误,无法修改密码!");
    }
    return false;
    }

    //积分累计
    public boolean saveScore(){
    Member member=new Member();
    System.out.print("请输入您的会员卡号:");
    member.setCardId(input.nextInt());
    System.out.print("请输入您的会员卡密码:");
    member.setPassword(input.next());
    if((member=hasMember(member))!=null){
    System.out.print("请输入您此次消费金额(消费1元累计1积分):");
    int score=input.nextInt();
    member.setScore(member.getScore()+score);
    return true;
    }else{
    System.out.println("您输入的会员卡号或密码错误,无法积累积分!");
    }
    return false;
    }

    //积分兑换
    public boolean minusScore(){
    Member member=new Member();
    System.out.print("请输入您的会员卡号:");
    member.setCardId(input.nextInt());
    System.out.print("请输入您的会员卡密码:");
    member.setPassword(input.next());
    if((member=hasMember(member))!=null){
    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=input.nextInt();
    if(score<=member.getScore()){
    member.setScore(member.getScore()-score);
    System.out.println("您的消费金额中使用会员积分抵消"+score/100*0.1+"元");
    return true;
    }else{
    System.out.println("抱歉,您的积分不够,无法抵用消费金额.");
    }
    }else{
    System.out.println("您输入的会员卡号或密码错误,无法完成积分兑换!");
    }
    return false;
    }

    //生成随机卡号
    public int createId(){
    boolean flag=true;
    Random random = new Random();
    int id=random.nextInt(99999999);
    for(Member member:memberList){
    if(member.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());
    //会员卡号随机生成
    member.setCardId(this.createId());
    System.out.print("请输入注册密码:");
    //会员密码不能小于6位
    String pwd;
    boolean flag = true;
    do{
    pwd = input.next();
    if(pwd.length()<6){
    System.out.print("会员密码不能小于6位,请重新输入注册密码:");
    flag = false;
    }else{
    flag = true;
    member.setPassword(pwd);
    }
    }while(!flag);
    member.setScore(100);

    //增加会员开卡日期
    Date date = new Date();
    String registDate = new SimpleDateFormat("yyyy-MM-dd").format(date);
    member.setRegistDate(registDate);

    memberList.add(member);
    System.out.println("恭喜,开通会员卡成功,系统赠送您100积分!您的会员卡号为:"+member.getCardId());
    }

    //查询积分
    public void showScore(){
    Member member=new Member();
    System.out.print("请输入您的会员卡号:");
    member.setCardId(input.nextInt());
    System.out.print("请输入您的会员卡密码:");
    member.setPassword(input.next());
    if((member=hasMember(member))!=null){
    System.out.println("姓名 会员卡号 剩余积分 开卡日期");
    System.out.println(member.getName()+" "+member.getCardId()+" "+member.getScore()+" "+member.getRegistDate());
    }else{
    System.out.println("您输入的会员卡号或密码错误,无法查询积分!");
    }
    }
    }

    ---------------------------------------------------------------------------------------------------------------

    测试类

    public class Test {
    public static void main(String[] args) {
    MemberDao dao=new MemberDao();
    dao.start();
    }
    }

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  • 原文地址:https://www.cnblogs.com/zhenfuxing/p/10458298.html
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