Integration between initializable & constructor in a FXML controller class

Question

Hi guys!
I know how to create a create an object from an fxml file in two ways:
1 - (fxml + controller) => no constructor, initialize method create the object
2 - (fxml without controller + a class with a constructor that become his controller once instantiated) => the object must be instantiated by the constructor, no initialize method
is there any way to create a single controller with both the approaches ?
i'm trying but it constructor and initialize seems to call each other, ending in a StackOverflowError...
suggestions?

Answer 1

Solved it by myself.
Access the root element of the FXML file by giving it a fx:id and inject it into the controller by using the @FXML annotation:
@FXML
private BorderPane borderPane; // this is my root element in FXML (fx:id="borderPane")
@FXML
protected void handleMenuItemImportCsvAction(final ActionEvent event) {
    final FileChooser fileChooser = new FileChooser();
    final File importFile = fileChooser.showOpenDialog(borderPane.getScene().getWindow());
}