I need to restrict input to only integers in an editable ComboBox. In other words, so that the user can input only digits 0-9, for example 1023. This is what I have:

public class JavaFxTest7 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        ComboBox<Integer> comboBox = new ComboBox<>();
        comboBox.getItems().addAll(1, 2, 3);
        comboBox.setEditable(true);
        Scene scene = new Scene(new VBox(comboBox), 200, 100);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

Could anyone say how to do it?