Can't center nodes within a border pane
<p>I can't for the life of me figure out why I can't center a VBox within one of the sections within a border pane.</p>

<pre><code>@Override
public void start(Stage primaryStage) throws Exception{
    BorderPane root = new BorderPane();
    Scene scene = new Scene(root, 960, 600);
    primaryStage.setScene(scene);
    primaryStage.setTitle("Test application");
    primaryStage.setFullScreen(true);
    primaryStage.setFullScreenExitHint("Press escape to exit fullscreen");
    primaryStage.show();
    javafx.scene.image.Image icon = new Image("sample/Riverviewcrest.png");
    primaryStage.getIcons().add(icon);

    Pane paneleft = new Pane();
    Pane paneright = new Pane();
    Pane panecenter = new Pane();
    Pane panetop = new Pane();
    Pane panebottom = new Pane();

    paneleft.setPrefWidth(100);
    paneright.setPrefWidth(100);
    panetop.setPrefHeight(100);
    panebottom.setPrefHeight(100);

    panecenter.setStyle("-fx-background-color: #0053A8");

    root.setLeft(paneleft);
    root.setRight(paneright);
    root.setCenter(panecenter);
    root.setTop(panetop);
    root.setBottom(panebottom);


    Text test = new Text("Hello");
    Text test2 = new Text("Hello");
    Text test3 = new Text("Hello");
    Text test4 = new Text("Hello");
    VBox box = new VBox();
    box.getChildren().addAll(test, test2, test3, test4);
    panecenter.getChildren().add(box);
    root.setAlignment(box, Pos.CENTER);
}

public static void main(String[] args) {
    launch(args);
}
</code></pre>

<p>The aim is to have the text centered within the center part of the border pane. Thanks for any and all help!</p>