Apparently there aren't a whole lot of Jasper experts looking at the more obscure forums here. I see via Google that there are Jasper forums, have you considered asking your question there?
Joined: Mar 22, 2005
Please keep in mind that my suggestion of rendering a Swing component was complete conjecture. Jasper may not be able to do that, nor actually be able to render RTF any which way, for all I know. Plus, I just noticed that integration of RTF content is a requested feature (although I suppose it's possible that the requester just hasn't figured out how to do it). [ February 04, 2008: Message edited by: Ulf Dittmer ]
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com