Userdef.java

import java.util.Scanner;
class InvalidAccess extends Exception{
 public InvalidAccess(String s){
 super(s);
 }
}
public class Userdef
{
 public static void main(String args[])
 {
 String username = "user1";
 String password = "pass123";
 Scanner sc = new Scanner(System.in);
 System.out.print("Enter username: ");
 String user = sc.nextLine();
 System.out.print("Enter password: ");
 String pass = sc.nextLine();
 try
 {
 if((user.equals(username)) && (pass.equals(password)))
 {
 System.out.println("ACCESS GRANTED");
 }
 else
 {
 throw new InvalidAccess("Invalid Username or Password");
 }
 }
 catch(InvalidAccess e)
 {
 System.out.println(e.getMessage());
 }
 }
}