We got a lot of feedback at Javaone on the JPedal PDF library that the software was really cool but the current licensing was over-complex.
In response, we have altered it so there is now just one version, dual-licensed so that it can be used under either a GPL or commercial license. This also makes it very easy to try it.
Full details are at http://www.jpedal.org so give it a try and let us know what you think.
The PDF plugins for Eclipse, IDEA and NetBeans will all be upgraded in the next few weeks and the presentation from the Javaone talk is on the site.