I mistakenly grabbed this booked thinking it would teach me how to write Java. Not so. This book teaches you how to incorporate Java applets into webpages. That's it. The entire content of the book can be summarised by the cheat sheet inside the front cover. I think it'd be an excellent book for a casual user who wants to add a little something to their website, but it's not for an IT professional who wants to learn anything about programming Java.