I decided to give it a go at testing javafx in an android device. My android device might be considered a low end device, it’s a nexus 4 from LG. The result can be seen below in a video. The quality of the video isn’t the best, I had to scale down the quality because the video was occupying 2GB.
My conclusion is that java/javafx runs with a very good performance in a low end android device with a pretty decent start up time. There were just 2 problems with this test, the first was with a demo which tested multi touch but didn’t run with top notch responsiveness but that might be the demos fault and not an issue with javafx itself. The second problem were dialogs: they aren’t showing up well.
The demo toke about 6 seconds to start which is more than the standard android app but not too much.