The classes Servlet::GenericServlet
and its descendent Servlet::Http::HttpServlet
are provided by the API as aids to servlet application developers. To
build a custom HTTP servlet, simply create a subclass of
Servlet::Http::HttpServlet and override the method/s
of your choice (typically some combination of service(),
doGet(), doPost(), etc). To build a servlet
for another protocol, create a subclass of
Servlet::GenericServlet and override
service().
Custom exceptions developed for a servlet application should inherit from Servlet::Util::Exception. Any exception caught by a servlet during processing should be wrapped in a Servlet::ServletException and re-thrown.