I want to make a web service and send message asynchronously,but i am not clear how the flow will be going. i have seen this thing on http://edocs.bea.com/wls/docs92/webserv/advanced.html#wp226917 but, here it is using a web service StockQuoteService which is not defined on this site,so i am not getting the actual flow. please help me
If you have a close look at the documentation page you will notice that this is just a tool supported version of the Asynchronous Web Service Design Pattern 4: Request/reply operations with posting.
So the "Web services client" is in fact a Web service that supports a "callback Web Service (operation)". So only clients that support a specific "callback Web Service (operation)" can even communicate with that particular "Web Service Server".
A Web service client in the standard sense (the one you can build from a plain WSDL) will not be able to communicate with this type of "Web Service Server".