It's a distinct possibility. I've never tried. I'd probably spend most of my time with Java looking for things that I want that it doesn't have, and then hopelessly writing them myself just to find that it still isn't as pretty as I want it to be. :<
Any particular reason for asking?
EDIT: Oh, but I can read Java code! Yessir, I can read it! Spent a lot of time in Javadocs and such over the past year and a half. It would not be hard for me to 'learn' Java traditionally just from my experiences with it in Clojure.
This post has been edited by Raynes: 06 January 2011 - 02:15 PM