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This is not my fault !!!!

 
Mahajan Bhupendra
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Posts: 118
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Hi,
From last few weeks i working on online exam problem..
rest of the things are all ok..
but i m sufferring with a big problem..
i m creating a session for each user and it's working fine..
At the end i invalidating a session for that user and i m
inserting his marks into database...
upto this is very fine..
next time when i again start the exam the first question is
always the old one and if i click on next question (Without
refreshing )i get NullPointerException prbably because of
the previous exam object has been invalidated.
i m creating Exam object in doGet method ..
and further processing is in
but at the first question if i refreshed program works smoothly
so i think this might be a problem of cache memory ..
can anybody please help me???
i m using resin server...
Bhupendra

 
Mahajan Bhupendra
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Posts: 118
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please help me
i m in need
Bhupendra
 
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