Hi, Satyabrata,
Before getting books, I think
you should consider Oracle's documentation:
JAXP Tutorial, to get you in touch with SAX, DOM, XSLT(with a introduction to XPath) and StAX.
JEE Tutorial: JAXB, a guide to JAXB (and StAX) on WebServices chapter of
Java EE 6 Tutorial.
You have a very good material to start your steps in Java&XML world.
--eduardo