This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Servlets can talk with JSPs, not HTML. You can take a request parameter in the servlet and send the result to a JSP page as a request attribute. Use the <%= %> or equivalent custom tag to print the value to the user.