Introductionto Xm Lmessaging

This document provides a tutorial on using XML messaging to communicate between distributed applications. It describes building a simple service that sums numbers provided in an XML request body and returns the total in the response. Code examples are provided for an XML listener that parses the request, computes the sum, and builds the response body, as well as a requestor that sends the XML request. The listener uses the DOM to extract numeric elements from the request and construct the output XML.