Thanks for the reply.
Thats fine placing the jar file in the WAR, but unless i re save the web.xml it not picking up the modified classes. Even re saving of the web.xml would be fine if it re loads only the modified classes only, but i tried that its not happening though.
To hot deploy the clases i am following the steps
1. copy/replace the jar file in the lib dir of the expanded war.
2. save web.xml without any changes
3. This re loads the all the classes for that war.
as mentioned in the #3 it reloads the all the classes, thats what i dont want. The ultimate goal is to only load the updated classes only.
Is it possible to do so?