演示如何进行用户认证的 Java 程序

原文:https://www . geesforgeks . org/Java-程序-演示-如何-用户-验证-完成/

身份验证是验证用户或信息身份的过程。用户身份验证是在用户登录到计算机系统时验证用户身份的过程。身份验证的主要目标是允许授权用户访问计算机，并拒绝未经授权的用户访问。

例T0】

逼近

  1. A string with user name and password as user input.
  2. Check whether the user name and password match.
  3. If there is a match, users are welcome.
  4. Otherwise, display appropriate information.

下面是上述方法的实现

T3】JavaT5

// Java program to check the authentication of the user

// Importing the modules
import java.util.*;

// Gfg Class
public class Gfg 
{
    // Main CLass
    public static void main(String args[])
    {
        // Declaring the username and password
        String user_name = "Geeks For Geeks";
        String password = "Geeks For Geeks";

        // Checking the validity of the input
        if(user_name.equals("Geeks For Geeks") && password.equals("Geeks For Geeks"))
        {
            // Printing Output
            System.out.println("Authentication Successful");
        }
        else
        {
            // Printing Output
            System.out.println("User name/ Password not matching");
        }
    }
}

T6T8输出T1

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