Yes, further development on Swing is now limited to bug fixes.
apparently development on swing stopped?
I believe there was a hack available in the past, but I doubt it works now what with the new windowing system and all. JavaFX is built over OpenGL (when DirectX is not available), but you cannot directly use OpenGL in conjunction with JavaFX. The reason for this is that JavaFX is very high level and does not currently provide any efficient mechanisms for a separate graphics system to link to it. Perhaps such a feature will be added in the future, but I would avoid depending on it.
If they cannot be used together(I wonder why not...) which would be better in development of games/applications with 3D capabilities...
I am having trouble understanding this one. How do games not fit into the internet and desktop categories?
It seems Open GL would be more used for games (Depending on the depth of the game World of Warcraft vs a Scrabble game...), while Java FX would be for Internet and Desktop applications?