Friday 5 September 2014

Listeners

Listener is a java program, waiting for some event to happen. Servlet API provides number of Useful listener classes for various purposes.

Listeners provides by javax.servlet package
   ServletContextListener
   ServletContextAttributeListener
   ServletRequestListener
   ServletRequestAttributeListener
   WriteListener
   ReadListener
   AsyncListener

Listeners provided by javax.servlet.http package
   HttpSessionListener
   HttpSessionIdListener
   HttpSessionBindingListener
   HttpSessionAttributeListener
   HttpSessionActivationListener


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