Hi Thanks to all members of java ranch special thanks to Chandra bhatt for his quick replies and answers to all my questions.
Thanks to Kathy Sierra and Bert Bates for wonderful book (It Grabs you !). The presentation of material in the book is really good and interesting. I dont read many books(not even stories/novels). But this one I found has a very different and interesting presentation style.
I scored very less in threads..... ,should have studied it more