import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class App extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    
    @Override
    public void start(Stage primaryStage) throws Exception {
        MenuBar menuBar = new MenuBar();
        Menu helpMenu = new Menu("Segítség");
        MenuItem contentMenuItem = new MenuItem("Tartalom");
        MenuItem aboutMenuItem = new MenuItem("Névjegy");

        contentMenuItem.setOnAction(e->System.out.println("Tartalom"));
        aboutMenuItem.setOnAction(e->System.out.println("Névjegy"));

        helpMenu.getItems().addAll(contentMenuItem, aboutMenuItem);
        menuBar.getMenus().addAll(helpMenu);

        BorderPane borderPane = new BorderPane();
        borderPane.setTop(menuBar);
        Scene scene = new Scene(borderPane, 300, 250);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}