java书店管理系统源代码

Java 源代码 public class loaduser { public String user; public String password; boolean b1; loaduser(String s1,String s2){ user=s1; password=s2; } void load(){ System.out.println(" 店管理销售系统"); System.out.println("**************************************" ); System.out.println(" 1、登录系统"); System.out.println(" 2、退出系统"); System.out.println("**************************************" ); System.out.println("请选择:"); int m; Scanner s=new Scanner(System.in); m=s.nextInt(); if(m==1){ for(int i=0;i<3;i++) { System.out.println("请输入账户名和密码"); String s3,s4; Scanner ss=new Scanner(System.in); s3=s.next(); s4=s.next(); if(user.equals(s3)&&password.equals(s4)) b1=true; else b1=false; if(i==0&&b1==false)System.out.println("用户名或密码输入错误一次,还有两次机会!"); if(i==1&&b1==false)System.out.println("用户名或密码输入错误两次,还有一次机会!"); if(i==2&&b1==false){System.out.println("三次输入错误,退出系统!");System.exit(0);} if(b1==true) { System.out.println("登录成功!"); break; } } } if(m==2)System.exit(0); } package manger; import java.util.ArrayList; import java.util.Scanner; import manger.vip; import System.menu; public class vipmanger { static ArrayList vipgroup=new ArrayList(); public vipmanger(){ vipgroup.add(new vip("001","王芳",100)); vipgroup.add(new vip("002","李娜",60)); vipgroup.add(new vip("003","杨丽",50)); vipgroup.add(new vip("004","孙洁",150)); vipgroup.add(new vip("005","肖青",300)); } static void addd(){ System.out.println("请一次输入编号,姓名,积分"); String S1,S2; int A; Scanner s=new Scanner(System.in); S1=s.next(); S2=s.next(); A=s.nextInt(); vip v1=new vip (S1,S2,A); vipgroup.add(v1); } static void delete(){ System.out.println("请输入要求删除的会员编号:"); String s; Scanner me=new Scanner (System.in); s=me.next(); boolean b1=true; for(int i=0;i bookgroup=new ArrayList(); public bookmanger(){ b ookgroup.add(new book("001","c语言",20,20)); b ookgroup.add(new book("002","大学英语",22,22)); b ookgroup.add(new book("003","高等

数学

数学高考答题卡模板高考数学答题卡模板三年级数学混合运算测试卷数学作业设计案例新人教版八年级上数学教学计划

",28,28)); } static void show(){ for(int i=0;i