Jonathan Knudsen, a technical writer at Sun, is coauthor of Beginning J2ME. He has written numerous articles about MIDP programming, and has developed several end-to-end Java ME applications. He has also authored or coauthored several books for O’Reilly Media, Inc., including The Unofficial Guide to Lego Mindstorms Robots, Java 2D Graphics, and Java Cryptography. He is a graduate of Princeton University.