Face Book Api With Java

I tried to developed a web application using facebook API with java. I did the configuration chages as per the document and able to login in to the FACEBOOK site plue redirect the page to the call bakc URL but when i tried to get profile for any user then my method throws an Exception with "Invalid parameter". When i try to work on that i found it may possible because of null session key value. Can any body give some suggestion for problem mentioned above.
Thanks in advace....................
diveshsolanki diveshsolanki
26-30, M
1 Response Jun 8, 2007

i want to create a profile page in face book by using java..<br />
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any body knows plz give me some suggestions.<br />
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and send me some links for creating the java applications in face book