In his Exploring Beautiful Languages blog, programming language enthusiast Luis Diego Fallas created a nice JavaFX Script applet example, and threw in a mini-lesson on Neville's Algorithm for free :-)
Here's a screenshot of the applet:
Luis walks you through all of the code in his example, which uses the newly introduced Application and Stage classes located in the javafx.application package. Go check it out, and leave a nice comment about his post! Incidentally, you can learn more about the Stage class in my Setting the "Stage" for the JavaFX SDK blog post.
JavaFX Script: Dynamic Java Scripting for Rich Internet/Client-side Applications
Immediate eBook (PDF) download available at the book's Apress site