private void resetInstances()
    {
        userName = "";
        userID = "";
        userType = "";
        message1 = "";
        message2 = "";
        
        wDisp = new WelcomeDisplay();
        pDisp = new ParkingNotification();
        sDisp = new SpotNumberDisplay();
        dDisp = new DisplayDirections();
        
        user = null;
        spot = null;
        
        valid = false;
        found= false;
        duplicate = false;
    }