JSP: Do not submit form if hidden field is filled

[Atrisa Milani]

Hi. I have a hidden field with name field_hidden in the form to stop spammers. If this field is filled, I want the form to be discarded or not submitted. How to say this in JSP:

 if (request.getParameter(field_hidden) != null) {
           do not submit the form
        }

How does the jsp code go there? Thanks in advance!

[Atrisa Milani]

Got it working like this:

if (hidden_field == "") {
        MailServiceUtil.sendEmail(mailForm);         
		}