Problem with class creation

Hi all, I have followed the tutorial for crating a new classe and insert it in a new document, but it not work! This is the link that I have followed to do that : http://www.xwiki.org/xwiki/bin/view/DevGuide/FAQs+Tutorial Other question: How to create by groovy or velocity a new document and put text in it's content. (like I give the name of document in edit area and after that I click a button, this will be create for me a new document with the given name of document) All my thanks in advance ---------------------------------------------------------------------------- ------------- Youcef