I am trying to deploy a simple web application. I only have 2 files, Entry.html and UpdateDBServlet. I have placed them under a directory in the webapps of tomcat. I can access the entry.html when Tomcat is running, but upon pressing the submit button, the UpdateDBServlet should be called, however, I get a html 404 error indicating that the requested resource is unavailable. I dont know how else to place this resource. Should this servlet also be mapped in the web.xml file?