Saving xml file through a java Servlet to a server

[Bhasker Reddy]

I have an xml file coming as a stream or from a web page.
I need to write a Java Servlet that needs to take this stream
and build up the xml file , name the file using one of the tags
of the xml file. and save the file to the server.
Can any one suggest some ways to do this.
Does you guys have any code which does this.
appreciate your help