public static void main(String[] args) {

    Scanner userinput = new Scanner(System.in);

    String full_name = "James Burton";
    String full_name2 = "Brian Ross";
    String full_name3 = "Bill Gates";
    String password = "thomas";

    System.out.println("Please sign in.");
    System.out.println("Full name, please: ");

    boolean game = true;

    while (game) {

    String username;
    username = userinput.nextLine();

    if (username.equalsIgnoreCase(full_name) || username.equalsIgnoreCase(full_name2) || username.equalsIgnoreCase(full_name3)) {

        System.out.println("Hello, " + username + ".");
        break;

    } else {
        System.out.println("Sorry that was incorrect try again.");
    }

    }

    System.out.println("Please enter your password: ");

    boolean pass = true;

    while (pass) {

        String check;
        check = userinput.next();
        if (check.equals(password)) {
            System.out.println("Welcome.");
            break;
        } else {
            System.out.println("Sorry that was incorrect. Try again.");
        }
    }

    System.out.println("Let's get started, shall we? What game would you like to play?");
    System.out.println("1) Checkers");
    System.out.println("2) Connect Four");
    System.out.println("3) Minesweeper");

    boolean games = true;

    while (games) {
    String game_choice;
    game_choice = userinput.next();
    if (game_choice.equalsIgnoreCase("Checkers") || game_choice.equals("1")) {
        System.out.println("Ok. Enjoy checkers.");
        break;
    } else if (game_choice.equalsIgnoreCase("connect four") || game_choice.equals("2")) {
        System.out.println("Ok. Enjoy connect four.");
        break;
    } else if (game_choice.equalsIgnoreCase("minesweeper") || game_choice.equals("3")) {
        System.out.println("Ok. Enjoy minesweeper.");
        break;
    } else {
        System.out.println("Sorry, please type in either the game name or the number besides it. Thank you!");
    }


    }
}