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Null Pointer Exception

843841Jul 14 2006 — edited Feb 14 2007
Hi actually i am building a quiz using servlet. taking input from the user using radio buttons.
<input type=radio value=wrong> Wrong answer <br>
<input type=radio value=right> Right answer <br>
and i am getting these Right and Wrong values using getParemeter() method well works fine. But the problem is when user does not attempt any of the question it generates an error Null Pointer Exception. i need help to resolve this issue.

Regards,

AA
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Locked on Mar 14 2007
Added on Jul 14 2006
#java-servlet
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