Awesome

FXValidation

Validation support for JavaFX.

Please visit http://pixelduke.wordpress.com/2014/07/26/validation-in-java-javafx/ for more information

About The Author

I hope you don't mind just a bit of publicity. I'm a JavaFX and Swing Freelancer and Consultant, but more generally can be described as a Front End Freelancer and Consultant since I also have experience in web technologies, building web apps, etc, and have experience in User Interface Design and User Experience. If you need professional assistance feel free to contact me.
Still this is, and will remain being, a free and open source library, so feel free to use it, royalty free, in your projects commercial or not.