I am trying to figure out what is the *.do extension. I am pretty sure it is related to the struts framework. Can anyone please explain how it works.

"All target=_blank>http://www.oracle.com/technology/sample_code/tutorials/bc4jvsm/struts/impl.htm

"All Struts actions begin with a URL that is submitted to the JSP request object when the end user clicks a Struts-defined link. The link must be of the form actionPathName.do, where the extension .do causes the ActionServlet to locate the corresponding action in the struts-config.xml configuration file.

The runtime process for handling actions in the Struts framework implemented by the BC4J component tags is:

1. User clicks a link that submits a .do parameter.
2. ActionServlet maps the request URI to the Action class through the definition in struts-config.xml.
3. The action class processes the request through a method implementation."

It is just a servlet url pattern used by sruts. Just like any other servlet pattern. You can go to web.xml of the web app and change it to *.delta.

Got it. Thanks guys.