Description:

Messenger is a JMS (Java Message Service) framework which makes it
very easy to use JMS in Web Service and Web Application environments.
Messenger implements session pooling (which can be quite hard to do
with JMS) which makes JMS very easy to work with. Also Messenger hides
much of the complexity of JMS behind a simple facade API, the Messenger
interface.
In addition Messenger provides an XML deployment configuration file to
avoid having to litter your code with complex deployment configuration
details in your application code.
Messenger also provides a Messagelet Engine which is a JMS based
container that can be deployed in any Servlet Engine to process JMS
messages via MessageListeners, Message Driven Objects, Servlets or JSP.