Hi Mehdi
So the JSwat debugger is just that, a debugger; it is not meant to be an editor or IDE. It does have a few small features that resemble an IDE. In fact, the underpinnings of the debugger is an IDE called NetBeans. It has been reduced to only the modules needed to support JSwat.
You may want to try NetBeans (
http://www.netbeans.org/) instead, which is a full featured IDE for Java, as well as other languages. It is the platform on which JSwat is built, so it will look familiar. It is also, at least I think, easy to use. There is a good community around NetBeans as well, and many blog posts on various topics.
Now if you're looking to use JSwat to debug a Java program, then start with the installation wiki (
http://code.google.com/p/jswat/wiki/Installation), and check out the user guide (file named UsersGuide.html in the docs directory of the JSwat installation). That should get you going in the right direction.
Thanks
n