This is the official homepage for EJB Design Patterns. Here you can download the source code for the book and also a PDF version of the book. Book Errata and other announcements will also be posted ...

The iterator design pattern is a commonly used pattern that provides a very useful abstraction. The iterator pattern is used to access and traverse the elements of a collection without the need to ...

Here’s where the object pool design pattern comes to the rescue. The object pool design pattern is a creational design pattern that is used to recycle objects rather than recreate them each time ...