package Endless;

import java.util.ArrayList;
import java.util.Random;
/**
* @JAVA01.person1.java
* @author 当前用户：Endless作者 :Endless
* @version 创建时间：2017年7月26日 下午6:29:16
* //实现商品及会员信息管理(添加，删除，显示)
* //实现超市结算
*/
import java.util.Scanner;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;

public class persion {
 static int s;
 static boolean huiyuan,xhuiyuan;
 static String bke="百事可乐",ke="500ml可乐一瓶",m="5公斤面粉",ss="1个苏泊尔炒菜锅",o="欧莱雅爽肤水一瓶";
 static ArrayListarray=new ArrayList();
 static Preferences goodsnodes = Preferences.systemRoot().node("goods"); //创建节点
 static Preferences goodschildnode = goodsnodes.node( "goods");  //创建子节点 

 public static void main(String []args) {


  outline();
  System.out.println("\t欢迎使用购物管理系统");
  System.out.println("\t1.登陆系统\n\t2.退出程序\n ");
  outline();
  int n =scanint(); 
  if(n == 1){ 
   login();  
  }else if( n== 2){ 
  System.out.println("已退出");
  System.exit(0);
  }else {
  System.out.println("请重新选择：");
  main(null);
 }

 }
 public static void outline(){
  System.out.println("* * * * * * * * * * * * * * * * * * * * * * *\n");
 }

 public static int scanint(){
 int x = 0;
 try {
  Scanner scan =new Scanner(System.in);
  x = scan.nextInt();
 } catch (Exception e) {
  System.out.println("输入有误,请输入数字：");
 }
 return x; 
 }

 public static String scanStr(){
 String x = null;
 try {

  Scanner scan =new Scanner(System.in);
  x = scan.next();
 } catch (Exception e) {
  System.out.println("输入有误,请输入字符串：");
 }
 return x; 
 }
 public static void login(){
  System.out.println(" * * * * * * * * * 登陆 * * * * * * * * * * * *\n请输入密码\n：");
  int n1 =scanint();
  if(n1==(123123)){
  System.out.println("登陆成功\n");
  showMain();
  }else{ 
  System.out.println("密码错误");
  System.out.println("请重新输入密码\n：");
  login();
  } 
 }
 private static void showMain() {
 System.out.println("\n\n\t欢迎使用购物管理系统\n"); 
 outline(); 
 System.out.println("\t\t 1. 会 员 信 息 管 理\n"); 
 System.out.println("\t\t 2. 货 物 信 息 管 理\n"); 
 System.out.println("\t\t 3. 购 物 结 算\n"); 
 System.out.println("\t\t 4. 注 销\n"); 
 outline(); 
 System.out.print("请选择,输入数字:"); 
 int n2 =scanint();
 switch (n2) {
 case 1:
  new user();
  break;
 case 2:
  goods();
  break;
 case 3:
  jiesuan();
  break;
 case 4:
  System.out.println("注销成功");
  main(null);
 default:
  System.out.println("没有您要的选项请重新输入");
  showMain();
  break;
 }
 }
 private static void goods() {
 //商品管理 ：添加商品： 编号 品名 价格
 // 删除：选择标号删除

 outline();
 System.out.println("\t\t商品信息管理\n");
 System.out.println("\t\t1,显示商品\n");
 System.out.println("\t\t2,添加物品\n");
 System.out.println("\t\t3,删除商品\n");
 System.out.println("\t\t4,返回上级\n");
 outline();
 int n = scanint();
 if (n==1){
  showgoods();
 }else if(n==2){
  addgoods();
 }else if(n ==3){
  delgoods();
 }else if(n==4) {
  showMain();
 }else {
  goods();
 }
 }
 private static void delgoods() {
   System.out.println("请选择要删除商品的ID：\n按0返回上级");
   try {
   Scanner scan =new Scanner(System.in);
   int x = scan.nextInt();
   boolean remove=false;
   for (int i=0;i=52){
   out(bke,s+2);
  }else{
   Err();
  }
  case 2:
  if(s>=103){
   out(ke,s+3);
  }else{
   Err();
  }
  break;
  case 3:
  if(s>=110){
   out(m,s+10);
  }else{
   Err();
  }
  break;
  case 4:
  if(s>=210){
   out(ss,s+10);
  }else{
   Err();
  }
  break;
  case 5:
  if(s>=220){
   out(o,s+20);
  }else{
   Err();
  }
  break;
  default:
  System.out.println("请重新选择");
  os();
  }
 }
 static void Err(){

  System.out.println("金额不足\n");
  main(null);
 } 
 static class user{
  static ArrayListarray=new ArrayList<>();
  static Preferences nodes = Preferences.systemRoot().node("user"); //创建节点
  static Preferences childnode = nodes.node( "user");  //创建子节点 


  public user() {
  outline();
  System.out.println("\t\t1,添加用户");
  System.out.println("\t\t2,删除用户");
  System.out.println("\t\t3,显示用户");
  System.out.println("\t\t4,返回上级");
  outline();
  try {
   int x=scanint();
   switch (x) {
   case 1:
   add();
   break;
   case 2:
   deluser();
   break;
   case 3:
   show();
   break;
   case 4:
   showMain();
   break;
   default:
   System.out.println("没有您要的选项！请重新选择");
    new user();
   break;
   }
  } catch (Exception e) {
  new user();
  } 
 }
 private void deluser() throws BackingStoreException {
   System.out.println("请选择要删除用户的ID：\n按0返回上级");
   try {
   Scanner scan =new Scanner(System.in);
   int x = scan.nextInt();
   boolean remove=false;
   for (int i=0;i