tomcat configuration

As part of Servlet 2.3 specification, we can now make use of session creation and destruction events. Our listener object will be called every time a session is created or destroyed by the server. You can use two interfaces as listener for your Session: HttpSessionListener triggers the listener when a new session is created or destroyed HttpSessionBindingListener triggers the listener when an Object is bound/unbound from the Session HttpSessionListener example: package com.sample; import javax.servlet.http.HttpSessionListener; import javax.servlet.http.HttpSessionEvent; public class SessionCounter implements HttpSessionListener { private static int activeSessions = 0; public void sessionCreated(HttpSessionEvent se) { activeSessions++; } public void sessionDestroyed(HttpSessionEvent se) { if(activeSessions > 0) activeSessions--; } public static int getActiveSessions() { return activeSessions; } } As you can see, all you have to do is implementing two meth...