JavaFX TabPane create

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.geometry.Side;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class Main extends Application {
   public static void main(String[] args) {
      Application.launch(args);//w ww  .j av  a 2 s.  c  om
   }

   @Override
   public void start(Stage primaryStage) {
      primaryStage.setTitle("Adding Tabs to a UI");
      Group root = new Group();
      Scene scene = new Scene(root, 400, 250, Color.WHITE);

      TabPane tabPane = new TabPane();

      MenuBar menuBar = new MenuBar();

      EventHandler<ActionEvent> action = changeTabPlacement(tabPane);

      Menu menu = new Menu("Tab Side");
      MenuItem left = new MenuItem("Left");

      left.setOnAction(action);
      menu.getItems().add(left);

      MenuItem right = new MenuItem("Right");
      right.setOnAction(action);
      menu.getItems().add(right);

      MenuItem top = new MenuItem("Top");
      top.setOnAction(action);
      menu.getItems().add(top);

      MenuItem bottom = new MenuItem("Bottom");
      bottom.setOnAction(action);
      menu.getItems().add(bottom);

      menuBar.getMenus().add(menu);

      BorderPane borderPane = new BorderPane();

      for (int i = 0; i < 10; i++) {
         Tab tab = new Tab();
         tab.setText("Tab" + i);
         HBox hbox = new HBox();
         hbox.getChildren().add(new Label("Tab" + i));
         hbox.setAlignment(Pos.CENTER);
         tab.setContent(hbox);
         tabPane.getTabs().add(tab);
      }

      borderPane.setCenter(tabPane);
      borderPane.prefHeightProperty().bind(scene.heightProperty());
      borderPane.prefWidthProperty().bind(scene.widthProperty());

      borderPane.setTop(menuBar);
      root.getChildren().add(borderPane);

      primaryStage.setScene(scene);
      primaryStage.show();
   }
   private EventHandler<ActionEvent> changeTabPlacement(final TabPane tabPane) {
      return new EventHandler<ActionEvent>() {
         public void handle(ActionEvent event) {
            MenuItem mItem = (MenuItem) event.getSource();
            String side = mItem.getText();
            if ("left".equalsIgnoreCase(side)) {
               tabPane.setSide(Side.LEFT);
            } else if ("right".equalsIgnoreCase(side)) {
               tabPane.setSide(Side.RIGHT);
            } else if ("top".equalsIgnoreCase(side)) {
               tabPane.setSide(Side.TOP);
            } else if ("bottom".equalsIgnoreCase(side)) {
               tabPane.setSide(Side.BOTTOM);
            }
         }
      };
   }
}