OnJava Documents Six Common Mistakes in Enterprise Java Development
Brett McLaughlin, wrote an excellent article called Six Common Enterprise Programming Mistakes. We have experienced several of the problems he illustrates in this article while on consulting projects at financial services firms in the New York area.
Brett is the author of Building Java Enterprise Applications Volume I: Architecture. If this is an indication of the overall quality of the book, it is a must read for developers on J2EE projects.