I am trying to get the source for the built in panels 'Izpack' provides.....
the documentation says it should be present at /src/lib/com/izforge/izpack/panels.
but the src folder is missing (not there where i installed Izpack )...
can someone please tell where i can find it
I didn't quite understand your question.
The download page for IzPack says:
If you are interested in the source code then please have a look at the instructions for obtaining it from Git.
So to get the source code, follow the instructions on this page. You will need to install Git, then you will be able to checkout source code from git://git.codehaus.org/izpack.git.