超市会员管理系统：
package supermarket;/** * 会员类 * @author 陈明 * */public class Member { private String name; // 会员名 private String password; //会员密码 private String time; //开卡时间 private int integral; //会员积分 private int kahao; // 卡号 public String getName() { return name; } public Member() {} public Member(String name, String password, String time, int integral, int kahao) { super(); this.name = name; this.password = password; this.time = time; this.integral = integral; this.kahao = kahao; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getTime() { return time; } public void setTime(String time) { this.time = time; } public int getIntegral() { return integral; } public void setIntegral(int integral) { this.integral = integral; } public int getKahao() { return kahao; } public void setKahao(int kahao) { this.kahao = kahao; } } package supermarket;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;import java.util.Random;import java.util.Scanner;import javax.print.attribute.HashAttributeSet;import org.junit.Test;import org.xml.sax.HandlerBase;/** * 实现类 * @author 陈明 * */public class Realize { Scanner sc = new Scanner(System.in); Map map = new HashMap(); Random rd = new Random(); int kahao; boolean i=true; //生成随机数方法 /** * @return */ @Test public int shuiji() { int sjs=0; while (true) { sjs =rd.nextInt(999999); if(sjs<100000&&map.containsKey(sjs)) { sjs =rd.nextInt(999999); } break; } return sjs; } //生成随机验证码数方法 public String yzm() { String b=""; int a = 0; for(int i=0;i<=4;i++) { while(true) { a =rd.nextInt(123); if(a>=48&&a<=57||a>=97&&a<=122||a>=65&&a<=90) { break; } } char a1=(char)a; b+=a1; } System.out.println("验证码为："+b); return b ; } //开卡方法 @Test public void kaika() { int i = -1; Member me = new Member(); do { System.out.println("请输入姓名："); String xm = sc.next(); System.out.println("请输入密码：（密码长度要大于等于6位）"); String mima1 = sc.next(); System.out.println("请在次输入密码：（密码长度要大于等于6位）"); String mima2 = sc.next(); if(mima1.equals(mima2)&&mima1.length()>6) { kahao = shuiji(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String sj =sdf.format(new Date()); me.setKahao(kahao); me.setName(xm); me.setPassword(mima1); me.setTime(sj); me.setIntegral(100); map.put(kahao, me); System.out.println("注册成功："); System.out.println("您是新用户赠送您100积分"); System.out.println("您的开卡姓名是\t您的卡号是\t\t密码为\t开卡时间为"); System.out.println(me.getName()+"\t\t"+me.getKahao()+"\t\t"+me.getPassword()+"\t"+me.getTime()); }else { System.out.println("输入有误，请重新输入："); i=0; } }while(i==0); } //登入方法 public boolean dengru() { System.out.println("请输入用户卡号："); int kahao =sc.nextInt(); if(map.containsKey(kahao)) { System.out.println("请输入用户密码："); String mima =sc.next(); String b =yzm(); System.out.println("请输入验证码："); String yzm = sc.next(); if(mima.equals(map.get(kahao).getPassword())&&yzm.equalsIgnoreCase(b)) { System.out.println("登入成功"); return true; }else { System.out.println("密码不正确/或者验证码不匹配"); return false; } }else { System.out.println("卡号不存在"); return false; } } //查询积分方法 public void jifencx() { System.out.println("尊敬的"+map.get(kahao).getName()+"用户您好"); System.out.println("您现在的积分为："+map.get(kahao).getIntegral()); } //积分累计方法 public void jifenleiji() { System.out.println("请输入您消费的金额：（没消费10得1积分）"); int jix = 0; try { jix = sc.nextInt(); } catch (Exception e) { System.out.println("输入错误重新输入："); } do{ if(jix<0) { System.out.println("输入有误请重新输入："); }else { map.get(kahao).setIntegral(map.get(kahao).getIntegral()+jix/10); System.out.println("你现在的积分为："+map.get(kahao).getIntegral()); break; } }while(true); } //积分兑换 public void jifendh() { int jf = 0; do{ System.out.println("你现在的积分为："+map.get(kahao).getIntegral()); System.out.println("请输入您要兑换的积分：（每10积分可得1元）"); jf = sc.nextInt(); if(jf<0) { System.out.println("输入有误请重新输入："); }else { System.out.println("您本次消费"+jf+"元"+"共获得"+jf/10); map.get(kahao).setIntegral(map.get(kahao).getIntegral()-jf); System.out.println("兑换完后还剩余积分为："+map.get(kahao).getIntegral()); break; } }while(true); } //修改密码方法 public void gaimima() { do { System.out.println("请输入您要修改的密码："); String mima1 = sc.next(); System.out.println("请确认您输入的密码："); String mima2 = sc.next(); if(mima1.equals(mima2)) { map.get(kahao).setPassword(mima2); System.out.println("修改成功，新密码为："+map.get(kahao).getPassword()); break; }else { System.out.println("输入有误请重新输入"); } }while(true); } //登入界面方法 public void jm() { int s =0; Member me = new Member("88888888","88888888","2019-3-1",100,1234567); map.put(me.getKahao(), me); do { System.out.println("----------------------------------------"); System.out.println("欢迎使用超市会员管理系统！！！"); System.out.println("1，开卡\t\t2，登入"); try { s = sc.nextInt(); } catch (Exception e) { System.out.println("输入有误，请重新输入："); i=true; break; } if(s==1) { kaika(); i=true; }else if (s==2){ boolean f =dengru(); while(f) { System.out.println("----------------------------------------"); System.out.println("1，积分查询\t2，积分累计\t3，积分兑换\t4，修改密码\t5,反回主页面\t"); System.out.println("请输入要操作的功能："); int a=0; try { a =sc.nextInt(); } catch (Exception e) { System.out.println("输入有误重新输入："); continue; } switch (a) { case 1: System.out.println("---------积分查询-----------"); jifencx(); break; case 2: System.out.println("---------积分累计-----------"); jifenleiji(); break; case 3: System.out.println("---------积分兑换-----------"); jifendh(); break; case 4: System.out.println("---------修改密码-----------"); gaimima(); f = false; break; case 5: System.out.println("---------退出登入-----------"); f = false; } } }else { System.out.println("输入错误！"); } }while(i); }} package supermarket;import java.util.Scanner;public class Test { public static void main(String[] args) { new Realize().jm(); } }