I read the Core J2EE Design Patterns 2nd edition in July 2005. Below I have written a review for this important book. Core J2EE Design Patterns is one of the most important books on the traditional J2EE application architecture. If you are programming J2EE systems that are heavily based on EJB 2.x then this book [...]
Christian Bauer at the Hibernate team blog has written an improved version of the DAOs of the Caveat Emptor application of the Hibernate in Action book. This new versions will probably be included in the second edition of the book. The new DAOs are implemented in Java 5 using generics and other Java 5 features. [...]
Here you can find an article by Bobby Woolf that describes why caching inside a Service Locator in J2EE 1.3 applications may have unexpected behavior. The article also provides a nice explanation of the EJB resource reference mechanism. Update (19/9/2005): BTW this is why the Adventure Builder (the sample application developed by SUN for J2EE [...]
Ivan Moore has a great post “Replacing Inheritance with Composition” at his blog, that explains how when you refactor your code from using Template Method to using Strategy can reduce the code duplication in your unit tests and also make your tests simpler. Both patterns, template method and strategy, try to solve the same problem. [...]