Comment récupérer une date

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.DatePicker;
import javafx.stage.Stage;

public class DatePickerApplication extends Application {
    public void start(Stage stage) {
        DatePicker datePicker = new DatePicker();
        datePicker.setOnAction(event -> {
            System.out.println("Date choisie: " + datePicker.getValue());
        });
        stage.setScene(new Scene(datePicker, 140, 25));
        stage.show();
    }

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