Craig Walls has been professionally developing software for over 15 years (and longer than that for the pure geekiness of it). He is the author of Modular Java (published by Pragmatic Bookshelf), Spring in Action and XDoclet in Action (both published by Manning).  When he's not slinging code, Craig spends as much time as he can with his wife, two daughters, 6 birds, and 2 dogs.