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-<?xml version="1.0" encoding="utf-8"?>
-<!--Arbortext, Inc., 1988-2005, v.4002-->
-<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN"
- "concept.dtd">
-<concept id="cwlistbn" xml:lang="en-us">
-<title>Listeners</title>
-<prolog><metadata>
-<keywords><indexterm>listeners<indexterm>overview</indexterm></indexterm>
-</keywords>
-</metadata></prolog>
-<conbody>
-<p>Listeners are new feature in the <cite>Sun
-Microsystems <tm tmclass="special" tmowner="Sun Microsystems, Inc." tmtype="tm"
-trademark="Java">Java</tm> Servlet 2.3 Specification</cite>. A listener can be used to monitor and
-react to events in a servlet's life-cycle by defining methods that get
-invoked when life-cycle events occur. Support for application level
-events is defined in the Java Servlet Specification 2.3.</p>
-<p>Application event listeners are classes that
-implement one or more of the servlet event listener interfaces. Servlet
-event listeners support notification for state changes in the
-<b>ServletContext</b> and <b>HttpSession</b> objects, specifically:
-<ul>
- <li><b>Servlet context listeners</b> are used to manage resources or state held at a VM
- level for the application.</li>
- <li><b>HTTP session listeners</b> are used to manage state or resources associated with a
- series of requests made in a Web application from the same client or
- user.</li>
-</ul></p>
-<p>For more information about listeners, refer to the <cite>Sun Microsystems <tm
-tmclass="special" tmowner="Sun Microsystems, Inc." tmtype="tm" trademark="Java">Java</tm> Servlet
-2.3 Specification</cite> at <codeph>java.sun.com/products/servlet/download.html</codeph>.</p>
-</conbody>
-</concept>

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