Facebook application callback url

I want to build facebook application and I am trying to do it using Java and so for that I searched over google and found some link:

• Rebirth of T-rex
• T=Machine - 1
• T=Machine - 2
• The Screencast Blog

Most of these pages and blogs are old and have a description of callback url settings for the application. As I registered user of facebook I got the App ID and the App Secret and also gave a name to my application, but I didn't find any place to write or define the callback url for the application. There are Site URL & Domain settings under Web.

Is the Site URL same as the Callback URL defined in those websites and what i开发者_运维技巧s Site Domain for the application.

As these sites are pretty much old, of the year 2007-2008 are there any recent blogs out there and any other websites from where I can get information?

Thanks and regards.

There are many changes in the application page recently. Go to Appname->Edit->Web->site url to add callback url