Bill Venners has been writing software professionally for 14 years. Based in Silicon Valley, he provides software consulting and training services through Artima Software Company. Since 1996, he has written over 40 articles about Java technology. His popular columns in JavaWorld magazine have covered Java internals, object-oriented design techniques, and Jini technology. He is also the author and webmaster of artima.com, an online resource for Java and Jini developers. He teaches in-house and public Java training seminars and frequently speaks on Java technology at software conferences around the world. You can reach him at bv@artima.com.