Drew, who runs a JavaFX blog -
The JavaFX Journey has posted an article explaining how to
integrate the Phys2D physics engine into JavaFX. Drew concludes that
Phys2D "is easy to use and is a pretty good match for JavaFX". Drew also has ported the highly addictive tower defense game to JavaFX in addition to a few more games. This blog is on my daily reading list now.