// Defines the main class
public static void main(String[] args) throws IOException {

    // Calls the login screen method
    loginScreen();

}

// This defines the login screen method
@SuppressWarnings("resource")
public static void loginScreen() {

    // Defines the string variable to generate password

    @SuppressWarnings("UnusedAssignment")
    String generatePass = "";

    // sets the login attempts to 3
    int flag1 = 0, attmpts = 3;

    // Define new input stream reader object
    BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));

    // Display message to login
    System.out.println("nLogin");

    // Try block loop
    try {// FIXME: move closer to file reader

        do {

            // counts down login attempts before locking out user
            attmpts--;

            // prompts user to enter username
            System.out.println("Please Enter Your Username");

            // stores the user input for username
            String userName = br1.readLine();

            // prompts user for password
            System.out.println("Please Enter Your Password");

            // This creates an instance of the MD5 hash algorithm
            // Stores password value
            String original = br1.readLine();

            MessageDigest MD1 = MessageDigest.getInstance("MD5");

            MD1.update(original.getBytes());

            byte[] digest = MD1.digest();

        StringBuilder Sb1 = new StringBuilder();

            // for loop to iterate through the credentials file looking for hash
            for (int k = 0; k < digest.length; k++) {

                Sb1.append(Integer.toString((digest[k] & 0xff) + 0x100, 16).substring(1));
                generatePass = Sb1.toString();
            }

            // sets variable cuurent line
            String CurrentLne;

            // Define an instance of the file reader to read through the credentials file
            BufferedReader bin1 = new BufferedReader(new FileReader
    ("C:\Users\fento\Documents\NetBeansProjects\NewAuthenticate\src\newauthenticate\credentialfile.txt"));

            // Loop through the file until you reach the end of the file
            while ((CurrentLne = bin1.readLine()) != null) {

                // Seperates each line within the file
                String[] strArr = CurrentLne.split("t");

                // If statement to validate that user name matches
                if (strArr[0].equals(userName)) {

                    // If statement to verify if password matches
                    if (strArr[1].equals(generatePass)) {

                        // Assign counter value
                        flag1 = 1;

                        // Break
                        break;

                    }

                }

            }

            // If statement to iterate through login attempts beginning at 0
            if (attmpts == 0) {

                // Display a message with number of logins remaining
                System.out.println("You have only" + attmpts + " more login attempts left");

                // Displays an exit message message
                System.out.println("Exit...");

                // Exits the system after 3 fail login attempts
                System.exit(1);

            }

            // If flag is 1
            if (flag1 == 1) {

                // Calls the admin screen method
                AdminLogin();

                // Break
                break;

            } else {

                // Displays a failed or invalid login attempt
                System.out.println("You have entered an Invalid Username or Password.");

                // print a blank line
                System.out.println();

                // prompts user to try to login again
                System.out.println(" Please try again.");

                // print a blank line
                System.out.println();

                // prompts user with number of login attempts left
                System.out.println(attmpts + " more attemptes left.n");

            }

        } // while loop
        while (attmpts > 0);

    } // catches of no such algorithm exception error
    catch (NoSuchAlgorithmException nae) {
        System.out.println("Current Alogorithm does not function: ");
    }
    catch (NoSuchFileException e){
        System.out.println("Current file will not: ");
    }
    catch(IOException e){
        System.out.println("There is a problem reading the current file:");
    }


}

// Definition of the admin screen method
public static void AdminLogin() {

    // Declare variable
    String logOut1;

    // sets up a scanner variable and a new scanner object
    Scanner sc1 = new Scanner(System.in);

    // dispalys a welcome admin prompt to the user
    System.out.println("nWelcome Admin");

    // prompts user to continue or press 99 to exit
    System.out.println("continue or Press 99 for log outn");

    // Do loop
    do {

        logOut1 = sc1.nextLine();

    } // while loop that looks for user inputting 99 to log out
    while (!logOut1.equals("99"));

    // if statement looking for 99 and if entered program exits
    if (logOut1.equals("99")) {

        // method call to the login screen
        loginScreen();

    }

}