Collections and Concurrency - JavaFX 8: A Definitive Guide to Building Desktop, Mobile, and Embedded Java Clients - page 326

When the program in Listing 7-11 is run, the UI in Figure 7-17 is displayed. It is a JFrame holding three Swing
components, a JComponent with overridden paint() and getPreferredSize() methods that makes it look like the
rectangle we saw in the earlier program, and two JButtons that will change the fill and the stroke of the rectangle.
Figure 7-17. The NoJavaFXSceneInSwingExample program
Inasmuch as the custom-painted JComponent in NoJavaFXSceneInSwingExample is hard to maintain over the long
run, we replace it with the JavaFX Rectangle . This is done by replacing the Swing code with the equivalent JFXPanel
code. Here is the Swing code:
canvas = new JComponent() {
@Override
public void paint(Graphics g) {
g.setColor(model.strokeColor);
g.fillRect(0, 0, 200, 200);
g.setColor(model.fillColor);
g.fillRect(10, 10, 180, 180);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
};
And here is the JFXPanel code:
canvas = new JFXPanel();
canvas.setPreferredSize(new Dimension(210, 210));
Platform.runLater(new Runnable() {
@Override
public void run() {
final Rectangle rectangle = new Rectangle(200, 200);
rectangle.setStrokeWidth(10);
rectangle.fillProperty().bind(model.fillProperty());