Java实现多用户注册登录的幸运抽奖

本文实例为大家分享了java实现简单幸运抽奖的具体代码，供大家参考，具体内容如下

代码模块：

user类：

package test1;

public class user {
 private string username;
 private string password;
 private int vipid;
 
 public user(string username,string password,int vipid) {
 this.username = username;
 this.password = password;
 this.vipid = vipid;
 }
 
 public string getusername() {
 return username;
 }
 public void setusername(string username) {
 this.username = username;
 }
 public string getpassword() {
 return password;
 }
 public void setpassword(string password) {
 this.password = password;
 }
 public int getvipid() {
 return vipid;
 }
 public void setvipid(int vipid) {
 this.vipid = vipid;
 }
}

main函数：

package test1;

import java.util.arraylist;
import java.util.random;

import java.util.scanner;


public class testuser {

 private static scanner in;
 public static void main(string[] args) {
 // todo auto-generated method stub
 arraylist<user> user = new arraylist<user>();
 user u = null;
 string conf = null;
 string username = null;
 string userpassword = null;
 string n;
 boolean flag = false;
 boolean flag0 = false;
 int[][] a = new int[2][5];
 in = new scanner(system.in);
 for(int i=0;i<2;i++) {
  for(int j=0;j<5;j++) {
  random rand = new random();
  a[i][j] = rand .nextint(9999) + 1000;
  }
 }
 do {
  
  system.out.println("****************欢迎进入奖客富翁系统*******************");
  system.out.println("                                 1、注册");
  system.out.println("                                 2、登录");
  system.out.println("                                 3、抽奖");
  system.out.println("*******************************************************");
  
  
  system.out.print("请选择菜单:"); 

   n = in.next();
   
  switch(n) {
   //用户注册
   case "1": {
   username = null;
   userpassword = null;
   system.out.println("(奖客富翁系统 >注册):");
   system.out.print("用户名：");
   string name = in.next();
   system.out.print("密 码：");
   string password = in.next();
   system.out.print("确认密码：");
   string repassword = in.next();
   if(password.equals(repassword)) {
    random rand = new random();
    int randnumber = rand .nextint(9000) + 1000;
    u = new user(name,password,randnumber);
    user.add(u);
    system.out.println("注册成功，请记住您的会员卡号:");
    system.out.println("用户名        密码       会员卡号");
    system.out.println(u.getusername()+"      "+u.getpassword()+"      "+u.getvipid());
   }
   else {
    system.out.println("对不起，您输入的密码不一致！");
   }
   
   system.out.print("\n继续吗？y/n：");
   
   string confirm = null;
   boolean fir = false;
   while(fir == false) {
    confirm = in.next();
    if(confirm.equals("y")||confirm.equals("y")||confirm.equals("n")||confirm.equals("n")) {
    fir = true;
    break;
    }
    else {
    system.out.print("您的输入为非法输入，请重新输入:");
    fir = false;
    }
   }
   
   conf = confirm;
   if(conf.equals("n")||conf.equals("n")) {
    system.out.println("系统退出，谢谢使用！");
   }
   }
   break;
   //用户登录
   case "2": {
   string ename = null;
   string epassword = null;
   username = null;
   userpassword = null;
   boolean fla = false;
   int evipid = 0;
   system.out.println("(奖客富翁系统 >登录):");
   while(fla == false){
    system.out.print("用户名：");
    username = in.next();
    system.out.print("密 码：");
    userpassword = in.next();
    if(user.isempty()) {
    system.out.println("您还没有注册，请先注册！");
    flag0 = true;
    fla = true;
    }else {
    for(user e: user) {
     if(username.equals(e.getusername())) {
     if(username.equals(e.getusername())&&userpassword.equals(e.getpassword())) { 
      
      ename = e.getusername();
      epassword = e.getpassword();
      evipid = e.getvipid();
      fla = true;
      system.out.println("欢迎您："+ename);
      
     }else {
      system.out.println("您输入的账号或密码有误，请重新输入:");
     }
     flag0 = true;
     break;
     }

    }
    
    if(flag0 == false) {
     system.out.println("您还没有注册，请先注册！");
    }
    
    }
    
   }
   
   if(flag0 == true) {
    
    system.out.print("继续吗？y/n：");
    string confirm = in.next();
    conf = confirm;
    if(conf.equals("y")||conf.equals("y")) {
    u= new user(ename,epassword,evipid);
    }
    else if(conf.equals("n")||conf.equals("n")) {
    system.out.println("系统退出，谢谢使用！");
    }
   }else {
    string confirm = null;
    boolean fir = false;
    while(fir == false) {
    confirm = in.next();
    if(confirm.equals("y")||confirm.equals("y")||confirm.equals("n")||confirm.equals("n")) {
     fir = true;
     break;
    }
    else {
     system.out.print("您的输入为非法输入，请重新输入:");
    }
    }
    conf = confirm;
    if(conf.equals("n")||conf.equals("n")) {
    system.out.println("系统退出，谢谢使用！");
    }
   }
   
   }
   break;
   //抽奖
   case "3": {
   system.out.println("(奖客富翁系统 >抽奖):");
   
   if(u == null||(username==null&&userpassword==null)){
    system.out.println("您还没有登录，请重新登录！");
    system.out.print("继续吗？y/n：");
    string confirm = null;
    boolean fir = false;
    while(fir == false) {
    confirm = in.next();
    if(confirm.equals("y")||confirm.equals("y")||confirm.equals("n")||confirm.equals("n")) {
     fir = true;
     break;
    }
    else {
     system.out.print("您的输入为非法输入，请重新输入:");
     fir = false;
    }
    }
    conf = confirm;
    if(conf.equals("n")||conf.equals("n"))
    system.out.println("系统退出，谢谢使用！");
   }

   else{
    system.out.println("欢迎"+u.getusername()+"来到幸运抽奖！");
    system.out.println("您的会员卡号为："+u.getvipid());
    for(int i=0;i<2;i++) {
    for(int j=0;j<5;j++) {
     system.out.print(a[i][j]+" ");
     if(u.getvipid() == a[i][j]) {
     flag = true;
     break;
     }else {
     flag=false;
     }
    }
    if(flag == true)
     break;
    }
    if(flag == true) {
    system.out.println("\n恭喜你成为本日的幸运会员！");
    }
    else {
    system.out.println("\n抱歉，您不是本日的幸运会员！");
    }
    system.out.print("继续吗？y/n：");
    string confirm = null;
    boolean fir = false;
    while(fir == false) {
    confirm = in.next();
    if(confirm.equals("y")||confirm.equals("y")||confirm.equals("n")||confirm.equals("n")) {
     fir = true;
     break;
    }
    else {
     system.out.print("您的输入为非法输入，请重新输入:");
     fir = false;
    }
    }
    conf = confirm;
    if(conf.equals("n")||conf.equals("n"))
    system.out.println("系统退出，谢谢使用！");
   }
   
   break;
   }
   
   default:{
   system.out.println("您的输入为非法输入，请重新输入:");
   system.out.print("继续吗？y/n：");
   string confirm = null;
   boolean fir = false;
   while(fir == false) {
    confirm = in.next();
    if(confirm.equals("y")||confirm.equals("y")||confirm.equals("n")||confirm.equals("n")) {
    fir = true;
    break;
    }
    else {
    system.out.print("您的输入为非法输入，请重新输入:");
    fir = false;
    }
   }
   conf = confirm;
   if(conf.equals("n")||conf.equals("n"))
    system.out.println("系统退出，谢谢使用！");
   break;
   
   }
  }
  
 }while((conf.equals("y")||conf.equals("y"))&&(!(n.equals("1"))||!(n.equals("2"))||!(n.equals("3"))));
 }
}

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