Hi Suhas,
I would suggest getting a good textbook, "Java & XML" (2nd edition) by Brett McLaughlin is an excellent introduction to XML handling with
java.
As a quick intro, you need to :
1) Create an XML reader using SAX factory method
2) Define a class that implements the ContentHandler interface and register an instance of that class with the reader.
3) Create an InputSource that points to the XML file to parse
4) Set the appropriate features on the parser to turn on validation eg
<
>
5) Call parse() on the reader, all event will then be sent to the object that you registered as the contentHandler.
/Tom