e/8/docs/api/java/util/EventListener.html?is-external=true" title="class or interface in java.util">EventListener</a></pre>
<div class="block">Causes an object to be notified when it is bound to or unbound from a session. The object is notified by an
 <a href="../../../jakarta/servlet/http/HttpSessionBindingEvent.html" title="class in jakarta.servlet.http"><code>HttpSessionBindingEvent</code></a> object. This may be as a result of a servlet programmer explicitly unbinding an
 attribute from a session, due t