Of course it is possible, the standard java distribution is loaded with XML related classes, including parsers. Harold's XML book is all on line , there are plenty of web tutorials, and the JavaDocs will give you a good start.
I'm not very clear about what is meant by �inbuilt java parser�.
As far as I know, since 1.4, java has an inbuilt API called JAXP � Java API for XML processing. JAXP contains DOM and SAX parsing interfaces.
So, as long as you are using DOM or SAX, you are effectively using inbuild Java API for parsing. [ July 28, 2008: Message edited by: Sandeep Narasimhamurthy ]