Query a web site javadb

Hi
Apologies for the basic nature of this question but I'm looking for a bit of inspiration.
I am trying to work out the best way to check the uniqueness (of a user input to a web page) against records held in a javadb table located in the same web site directory. Put simply, if a user enters say the the word 'pass' then I would like to query the table to see if it already exists. If it did then I will display a message to the user.
I would like to create a java class that will do this but the only web site resource at my disposal is the cgi_bin directory. I am sure that I can invoke the java class from a cgi script but how to return the query results from the class has me stumped.
Any advice on this would be greatly appreciated.
Many Thanks
GB

The most expedient method is to communicate with a java servlet from the CGI via HTTP (i can't imagine why you wish to use CGI for one part of the site and java for the other).
The HttpServlet class is designed to communicate via HTTP. The servlet can keep DB connections open (CGI is notorious for difficulty in implementing this) then take HTTP reuests then respond appropriately.
Or just cut out the CGI - why do you need to use it, get the user to query the servlet. Or more crucially, if you are confined to CGIs, how is the java programme going to run? Am I missing the point here?

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