java中登录和注册系统

Bertha 。 2022-07-16 11:16 171阅读 0赞

package com.myhomework;  
import java.util.Scanner;  
/\*作者：陈天祥  
\* 时间：2016.10.13  
\* 功能：登录系统  
\*/  
public class LoginService\_1 \{  
public static void main(String\[\] args) \{  
  
String \[\]user = new String\[2\];  
int \[\]password = new int\[2\];  
//选择菜单  
int selects = selecMenu();  
if(selects == 1) \{  
loginIf(user,password);  
\} else \{  
boolean flag = regist(user,password);  
if(flag) \{  
System.out.println("注册成功！");  
int s = selecMenu();  
if(s == 1) \{  
loginIf(user,password);  
\} else \{  
regist(user,password);  
\}  
\}  
\}  
\}  
  
public static void loginIf(String \[\]user,int \[\]password) \{  
//如果密码匹配则，输出登录成功就返回true，否则输入，  
//密码或者用户名错误false，请重新输入  
boolean flag = login(user,password);  
if(flag)\{  
System.out.println("登录成功！");  
\} else \{  
System.out.println("登录失败！");  
\}  
\}  
  
/\*\*  
\*/  
public static int selecMenu() \{  
System.out.println("1:登录");  
System.out.println("2:注册");  
  
Scanner input = new Scanner(System.in);  
System.out.println("选择菜单：");  
int selects = input.nextInt();  
  
return selects;  
\}  
  
public static boolean login(String \[\]user,int \[\]password) \{  
  
Scanner input = new Scanner(System.in);  
System.out.println("请输入用户名：");  
String userName = input.nextLine();  
  
System.out.println("请输入密码：");  
int pwd = input.nextInt();  
  
//通过userName数据，找到user下标，  
int index = -1;  
for (int i = 0; i < user.length; i++) \{  
if(user\[i\].equals(userName)) \{  
index = i;  
\}  
\}  
//然后通过user下标找到password中相应的密码。  
if(password\[index\] == pwd) \{  
return true;  
\} else \{  
System.out.println("用户名或者密码输入错误，请从新输入！");  
\}  
return false;  
\}  
  
public static boolean regist(String \[\]user,int \[\]password) \{  
  
for (int i = 0; i < password.length; i++) \{  
Scanner input = new Scanner(System.in);  
System.out.println("请输入用户名：");  
String userName = input.nextLine();  
user\[i\] = userName;  
System.out.println("请输入密码：");  
int pwd = input.nextInt();  
password\[i\] = pwd;  
  
  
\}  
return true;  
\}  
//數組  
// String \[\]user = new String\[10\];  
// int \[\]password = new int\[10\];  
\}