If you have an existing MIDP application or are interested in learning about using JavaFX technology with a mobile application, check out the following:

• Enhance Your MIDlet With JavaFX Technology explains how to use JavaFX technology to improve your existing MIDlets.
  
  
• From MIDP to RIA: Enhancing Radio Buttons shows how JavaFX code can be used to provide a richer UI for your MIDlet and uses radio buttons as an example.