if (validDataFirstCar(parkingRequestFactoryEditor, request)) {
if (!isFirstCarDateValid(parkingRequestFactoryEditor, request)) {
    public ActionForward editParkingRequest(ActionMapping mapping, ActionForm actionForm,            HttpServletRequest request, HttpServletResponse response) throws Exception {        ParkingRequestFactoryEditor parkingRequestFactoryEditor = (ParkingRequestFactoryEditor) getFactoryObject();        DynaActionForm parkingForm = (DynaActionForm) actionForm;        if (validDataFirstCar(parkingRequestFactoryEditor, request)) {            return mapping.getInputForward();        }        ajustParkingRequest(parkingForm, parkingRequestFactoryEditor);        executeService(request, "ExecuteFactoryMethod", new Object[] { parkingRequestFactoryEditor });        return prepareParking(mapping, actionForm, request, response);    }