import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Separator;
import javafx.scene.control.SplitMenuButtonBuilder;
import javafx.scene.control.ToolBar;
import javafx.stage.Stage;

public class MyApp extends Application
{

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

    @Override
    public void start(Stage stage) throws Exception
    {
        ToolBar toolbar = new ToolBar();
        toolbar.getItems().addAll(new Button("One"), new Button("Two"), new Separator(), SplitMenuButtonBuilder.create().text("three").build());
        
        Scene scene = new Scene(toolbar);
        stage.setScene(scene);
        stage.show();
    }
}