import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.*;
import javafx.scene.text.*;
import javafx.scene.control.Label;

public class GUI extends Application {
    @Override
    public void start(Stage stage) {
        Pane root = new VBox();
        Text text = new Text("Hei!");
        text.setFont(new Font(40));
        root.getChildren().add(text);

        stage.setScene(new Scene(root, 200, 200));
        stage.show();
    }

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