The JGenerator is an open source project and is covered by Apache style license.
Basically it means that you can just grab the sources and be on your own or you can participate
in development of the official version of JGenerator. If you choose the latter first you need to submit
some useful piece of code to me
(check here coding conventions), then if everything is ok with it,
you will need to register
on sourceforge.net and send
me an e-mail
with a request to add you to the project.
Being an "official" developer has many benefits: you have write access to cvs, you are listed as a developer :), you can change/modify the web site and participate in various activities on SourceForge. The project's homepage is here.
SourceForge uses CVS as a source control system. If you are from *NIX world you are probably familiar with it, if you are Windows guy you are probably not. In either case, if you don't know what it is don't be afraid ! It is very simple. I made it up and running in 3 hours knowing nothing about it before. It includes downloading everything, reading documentation, installing, reading again and finally running it. I installed it on Windows, because most of the time I work on this platform. Here is a very good and simple tutorial on how to install it on Windows step by step. I also strongly recommend to read here and here. It may save you a couple of days :). If you are on Unix and you are not familiar with CVS I recommend you to read here.