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What would be the equivalent of the PHP isset function

843836Apr 19 2005 — edited Apr 20 2005

I am looking for the equivalent of the php isset function in order to determine if some variables were previously set using the jsp:set tag.
Another thing which I can<t figure out is how to procede to determine if a form has been submitted, and if it has, how to retrieve the button name used to submit.

Thanks in advance.

-Dalzhim

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Locked on May 18 2005

Added on Apr 19 2005

#javaserver-pages-jsp-and-jstl

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