Even if intentional, a brief description of why databases wont update with your code, why there are concurrency issues, methods are "one-time executed", so on, so on.

Even Cut and pasteing code results in interesting "gotcha's" not described in the text as the book progresses!!

Generaly, I consider these things typical; and usually programmer error rather than bad code, but the code in this book just falls flat on it's own!

Dang! Good info to a certain degree -- but all ends there.