Listing 2. You must register the MyApplicationListener class (shown in Listing 1) with this deployment descriptor for it to work.

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
   PUBLIC "-//Sun Microsystems, Inc.//
   DTD Web Application 2.3//EN"
   "http://java.sun.com/j2ee/dtds/
   web-app_2_3.dtdÓ>

<web-app>
   <listener>
      <listener-class>
         MyApplicationListener
      </listener-class>
   </listener>
</web-app>