On your way in you may have missed that we have a policy on screen names here at JavaRanch. Basically, it must consist of a first name, a space, and a last name, and not be obviously fictitious. Since yours does not conform with it, please take a moment to change it, which you can do right here.
As to your question, what do you mean by "access HTML table cells"? HTML exists on the client, while servlets execute on the server, so there is no way to mix the two. Can you describe in more detail what it is you're trying to do?