public static Logger logger = LoggerFactory.getLogger(Main.class);


    private static BorderPane root;
    private Stage primaryStage;

    @Override
    public void start(Stage stage) {
        primaryStage = stage;
        try {
            root = (BorderPane) FXMLLoader.load(getClass().getResource("PocetniEkran.fxml"));
            Scene scene = new Scene(root, 600, 400);
            scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
            primaryStage.setScene(scene);
            primaryStage.show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static void setCenterPane(BorderPane centerPane) {
        root.setCenter(centerPane);

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