javafx questions

    public void changeScenes(ActionEvent event, String viewName, String title) throws IOException{
            FXMLLoader loader = new FXMLLoader();
            loader.setLocation(getClass().getResource(viewName));
            Parent parent = loader.load();

            Scene scene = new Scene(parent);


            Stage stage = (Stage)((Node)event.getSource()).getScene().getWindow();
            stage.setTitle(title);
            stage.setScene(scene);
            stage.show();
        }

public void saveBreadButtonPushed(ActionEvent event) {

            SceneChanger sc = new SceneChanger();
            sc.changeScenes(event, "bread.fxml", "List");