import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuButton;
import javafx.scene.control.MenuItem;
import javafx.stage.Stage;

public class Main extends Application {        
    public static void main(String[] args) {        
        Application.launch(args);
    }
    
    @Override 
    public void start(Stage stage) {
      
        stage.setHeight(300.0);
        stage.setWidth(400.0);
        
        Group group = new Group();
        Scene scene = new Scene(group); 
        
        MenuButton button = new MenuButton("Menus");
        MenuItem mi1 = new MenuItem("MenuItem");
        Menu menu = new Menu("Sub stuff");
        MenuItem s11 = new MenuItem("Sub 1.1");
        MenuItem s12 = new MenuItem("Sub 1.2");
        menu.getItems().addAll(s11, s12);
        Menu menu2 = new Menu("More sub stuff");
        MenuItem s21 = new MenuItem("Sub 2.1");
        MenuItem s22 = new MenuItem("Sub 2.2");
        menu2.getItems().addAll(s21, s22);
        button.getItems().addAll(mi1, menu, menu2);
        
        group.getChildren().addAll(button);
               
        
        stage.setScene(scene);           
        stage.setVisible(true);       
    }      
}