import com.sun.javafx.runtime.VersionInfo;
import java.time.*;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class RT31132 extends Application {

    DatePicker datePicker = new DatePicker(LocalDate.of(2015, Month.JANUARY, 28));

    @Override public void start(Stage primaryStage) {
        HBox container = new HBox(20.0);
        ComboBox comboBox = new ComboBox();
        comboBox.setEditable(true);
        container.getChildren().addAll(new Button("Left"), datePicker, comboBox, new Button("Right"));

        VBox root = new VBox(5);
        root.getChildren().add(container);

        CheckBox traversable = new CheckBox("Focus traversable");
        traversable.setSelected(datePicker.isFocusTraversable());

        traversable.selectedProperty().addListener(new ChangeListener<Boolean>() {
            @Override public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
                datePicker.setFocusTraversable(newValue);
                comboBox.setFocusTraversable(newValue);
            }
        });

        root.getChildren().add(traversable);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle(VersionInfo.getRuntimeVersion());
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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