private void userInformationView() {
   String number = (String) session.get("user library number");
   if (number != null) {
     User user = userService.findByLibriaryNumber(number);
     System.out.print(
         "ID: "
             + user.getId().toString()
             + NewLine
             + "Name: "
             + user.getName()
             + NewLine
             + "Library Number: "
             + user.getLibrary_number()
             + NewLine
             + "Email: "
             + user.getEmail()
             + NewLine
             + "Phone: "
             + user.getPhone()
             + NewLine);
   } else {
     System.out.print("Not logged in.");
   }
   System.out.print("Press Enter to go back.");
   scanner.nextLine();
   path.remove(path.size() - 1);
 }
  private void userLoginView() {
    System.out.print("User Login" + NewLine);
    System.out.print("Input Library Number:" + NewLine);
    String number = scanner.nextLine();
    System.out.print("Input Password:"******"user library number", number);
      System.out.print("Logged in. Press Enter to go back." + NewLine);
    } else {
      System.out.print("Invalid library number or password. Press Enter to go back." + NewLine);
    }

    scanner.nextLine();
    path.remove(path.size() - 1);
  }