Question

I am using JavaFX 2 in Netbeans. How do I get the width and height of an element to adjust when the Frame is resized? Here is my layout:

Stage stage = new Stage();
stage.setTitle("Hello World");
final Group root = new Group();
Scene scene = new Scene(root);

BorderPane border = new BorderPane();
border.setPrefWidth(stage.getWidth());
border.setPrefHeight(stage.getHeight());

HBox outerHBox = new HBox();
border.setCenter(outerHBox);
root.getChildren().add(border);
stage.setScene(scene);

After some more research
I found where this has been done before http://java.dzone.com/articles/setting-stage-javafx-sdk but it is in an older FX (very different from JavaFX 2). I am having trouble translating it. Looks like I should be using binding? I’ve never used binding before and I’ve barely used FX.

Whats the best way to accomplish this?

Answer 1

Not all Node classes enable resizing. The Group class is one of these. You’ll understand this when calling isResizable() on your root object. Use instead a subclass of Region e.g. BorderPane as your root.

Stage stage = new Stage();
stage.setTitle("Hello World");

final BorderPane border = new BorderPane();
Scene scene = new Scene(border);

Button button = new Button("test");

HBox outerHBox = new HBox();
outerHBox.getChildren().add(button);
outerHBox.setAlignment(Pos.CENTER);

border.setCenter(outerHBox);

stage.setScene(scene);

Your example should work, now.