I have been playing around with the clock on http://sellmic.com/blog/2007/05/20/javafx-clock/, which is really cool. A number of people commented that the implementation was chewing up too many CPU cycles, so I decided to see if I could fix that. I found that the timer loop was the culprit. After modifying the code to use a Swing timer, CPU usage is almost 0%. You can launch the new Clock via webstart below.
Source
ClockUI.fx
JfxClock.fx
