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+his is a Java Program to Illustrate how User Authentication is Done.
+Enter username and password as input strings. After that we match both strings against given username and password. If it matches then Authentication is successfull or else Authentication fails.
+
+Here is the source code of the Java Program to Illustrate how User Authentication is Done. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.
+
+
+
+import java.util.Scanner;
+public class User_Authentication 
+{
+    public static void main(String args[])
+    {
+        String username, password;
+        Scanner s = new Scanner(System.in);
+        System.out.print("Enter username:");//username:user
+        username = s.nextLine();
+        System.out.print("Enter password:");//password:user
+        password = s.nextLine();
+        if(username.equals("user") && password.equals("user"))
+        {
+            System.out.println("Authentication Successful");
+        }
+      
+        else
+        {
+            System.out.println("Authentication Failed");
+        }
+    }
+}