import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class test extends Application {

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

    @Override
    public void start(Stage stage) {

        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(550);

        VBox hbox = new VBox(10);

        ComboBox<String> box = new ComboBox<>();
        box.getItems().add("test");
        box.setEditable(true);
        box.getSelectionModel().selectFirst();


        TextField textfield = new TextField();

        Button defaultButton = new Button("press");
        defaultButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent arg0) {
                System.out.println("button pressed!");
            }
        });
        defaultButton.setDefaultButton(true);

//        Comment out this line for the second test
//        box.onActionProperty().bind(defaultButton.onActionProperty());

        hbox.getChildren().addAll(box, textfield,defaultButton);
        Scene scene = new Scene(hbox);
        stage.setScene(scene);
        stage.show();
    }

}