import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class ScrollPaneTest extends Application {

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

    @Override
    public void start(Stage stage) {

        Button button = new Button();
        button.setGraphic(new ImageView(new Image("folders.png")));
        Button button2 = new Button();
        button2.setGraphic(new ImageView(new Image("folders.png")));

        HBox hbox = new HBox(button, button2);
        ScrollPane scrollPane = new ScrollPane(new Group(hbox));
        Scene scene = new Scene(scrollPane);
        stage.setScene(scene);
        stage.show();
    }
}