how to begin with learning to develope in JAVA

Hi all,
I would like to get into JAVA dev but for that I need to prove my potential to my manager.So, could anyone please provide me suggestions on how do I begin preparing to become a JAVA developer.
I have basic JAVA knowledge,completed SCJP 1.5.But I need to prepare in a dev perspective.

Hope any of dos expert developers could help me out.

Thanks,
Triji

Well, I don't know how much time you've got left but reading a book is generally a good way to learn stuff (so i've heared ;) ) I can recommend this book: bluej.org (paste in your browser) if you don't have any experience with OO-programming at all.

Anyway, good luck!