如何使程序能够处理用户输入的其他符号？一会儿/尝试赶上？（java）

我是编程新手，目前正在写银行菜单。

用户可以通过按1或2来选择他/她是管理员还是客户。我想编写代码，以便如果用户键入ints程序以外的其他符号，则会发送错误消息并让用户选择再次。

到目前为止，我仅设法使用while循环来使程序处理除1和2以外的其他整数。

我在想可能应该使用try和catch，但是我无法使用它。标志着我在那里我已经试过try/catch东西用//----------。

用户输入X而不是数字时出现错误消息：

run:

Press 1 to login as customer or 2 to login as admin x
Exception in thread "main" java.util.InputMismatchException
  at java.util.Scanner.throwFor(Scanner.java:864)
  at java.util.Scanner.next(Scanner.java:1485)
  at java.util.Scanner.nextInt(Scanner.java:2117)
  at java.util.Scanner.nextInt(Scanner.java:2076)
  at bank.Bank.main(Bank.java:32)
Java Result: 1
BUILD SUCCESSFUL (total time: 5 seconds)

public class Bank {
  /**
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    int ChoiceOne;

    int CustpNr;
    int CustChoice;

    int AdminpNr;
    int AdminChoice;

    System.out.print("Press 1 to login as customer or 2 to login as admin ");
    ChoiceOne = input.nextInt();

    while (ChoiceOne != 1 && ChoiceOne != 2) {
      // ---------------

      try {
        ChoiceOne = input.nextInt();
      } catch (Exception e) {
        continue;
      }

      // ----------------

      System.out.print(" Wrong number. Press 1 to login as customer or 2 to login as admin ");
      ChoiceOne = input.nextInt();
    }// ends while

    // The code below generates a menu for the customer if the user chooses 1
    // and a meny for the admin if the user chooses 2.

    if (ChoiceOne == 1) {
      System.out.print("Welcome customer. Please login by using your birthdate (yymmdd) ");
      CustpNr = input.nextInt();

      boolean quit = false;
      do {
        System.out.println("1. deposit money");
        System.out.println("2. Withdraw money");
        System.out.println("3. Check balance");
        System.out.print("Your choice, 0 to quit: ");
        CustChoice = input.nextInt();

        switch (CustChoice) {
        case 1:
          // deposit money
          break;
        case 2:
          // withdraw money
          break;
        case 3:
          // Check balance and accounts
          break;
        case 0:
          quit = true;
          break;
        default:
          System.out.println("Wrong choice.");
          break;
        }

        System.out.println();
      } while (!quit);

      System.out.println("Bye!");
    } else if (ChoiceOne == 2) {
      System.out.print("Welcome Admin. Please login using your birthdate (yymmdd) ");
      AdminpNr = input.nextInt();

      boolean quit = false;
      do {
        System.out.println("1. Add customer");
        System.out.println("2. Add account");
        System.out.println("3. List customer and accounts");
        System.out.println("4. Remove customer");
        System.out.println("5. Remove account");
        System.out.print("Your choice, 0 to quit: ");
        AdminChoice = input.nextInt();

        switch (AdminChoice) {
        case 1:
          // add customer
          break;
        case 2:
          // add account
          break;
        case 3:
          // List customer and accounts
          break;
        case 4:
          // ta bort kund
          break;
        case 5:
          // ta bort konto
          break;
        case 0:
          quit = true;
          break;
        default:
          System.out.println("Wrong choice.");
          break;
        }

        System.out.println();
      } while (!quit);

      System.out.println("Bye!");
    }
  }
}