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;
}
}

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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！");
}
}
}

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测试类

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