import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class App extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    
    @Override
    public void start(Stage stage) throws Exception {
        Text text = new Text("Helló");
        Scene scene = new Scene(new VBox(text), 300, 250);
        stage.setScene(scene);
        stage.setTitle("Valami");
        stage.show();
    }
}