JavaFX isn't hard to learn. In fact, any developer with a little bit of object-oriented knowledge and a penchant for desktop development in Java can quickly put together a feature-rich GUI application ...
In general, a JavaFX application contains one or more stages which corresponds to windows. Each stage has a scene attached to it. Each scene can have an object graph of controls, layouts etc. attached ...
I returned to the Hilton (Imperial Ballroom B) to see Richard Bair‘s (Oracle Java Client Architect) “JavaFX Graphics Tips and Tricks.” Bair is associated with FX Experience and obviously knows JavaFX.