Login_password

import java.util.Scanner;

public class Login {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String userName = scanner.nextLine();
        String password = "";
        for(int i = userName.length() - 1; i >= 0; i--){
            password = password + userName.charAt(i);
        }
        int loginAttemptCount = 1;
        String input = scanner.nextLine();
        while (!input.equals(password) && loginAttemptCount++ < 4) {
            System.out.printf("Incorrect password. Try again.%n");
            input = scanner.nextLine();
        }
        if (input.equals(password)) {
            System.out.printf("User %s logged in.", userName);
        } else {
            System.out.printf("User %s blocked!", userName);
        }
    }
}