Does the PDF view renders the PDF in a Java 8.0 JavaFX application?
Thank you for the interest in the GroupDocs.
Yes, the GroupDocs.Viewer for Java can be used in the JavaFX application, but we did not fully tested it in such environment and for now additional dependencies should be included (i.e. javax.servlet). Probably in further releases of the library this dependency will be removed. To render documents in your app, please, use the com.groupdocs.viewer.handlers.ViewerHandler API.
By the way, can you, please, describe a bit your use-case, so we can advise you better?