Hi Deepak, you sent an email to the XWiki Developers list. This mailing list is read and answered by members from the XWiki Open-Source community during their spare time. Therefore it is considered a good practice to send emails that describe the issues you encounter in detail, with all the background information required for devs to be able to understand your problem and help you solve it. 1.I have got nothing about about the java files.which i need to update

specialy admin java files.

What exactly are you talking about ? Did you read the architecture pages on XWiki.org ? Or the Dev Guide at http://platform.xwiki.org/xwiki/bin/view/DevGuide/ ?

2.Our specific requirement is to bypass the user login and password ,as that user already done at our application main page.

What authentication system are you using at this time ?

Please send back some solution and if possible id or mail contact of person to whom i can discuss my problem in detail.

This is the Open-Source community mailing list. It is answered by volunteers only. If you are looking for professional consulting services, please contact the XWiki SAS company (you can do so on http://www.xwiki.com/xwiki/bin/view/Contact/ ). Otherwise, please note that your request will be answered by people who have the time to do so, and only if you give them all the material required to do it (such as the version of XWiki you're using, the name of your application server, the type of authentication system you want to use and so on). Thanks, Guillaume