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is a variable set?

Join Date: Oct 2004
Location: San Francisco, CA
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is a variable set?

  #1  
Apr 27th, 2005
I am in the process of learning JSP and my question is how do I check to see if a variable exists? The equivalent of this in php would be
[php]if (isset($_POST['someVar']))[/php] or
[php]if (isset($_GET['someVar']))[/php]
any and all help would be appreciated!
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