Object Orientation and Design Pattern articles

I found a good resource for Object Orientated programming and a bit of design patterns. Like all of my favourite resources it's free.

http://csis.pace.edu/~bergin/

What I liked about the articles on this site was that there seemed better than a lot of articles you read on OO and design patterns. The reason for this was because they were longer. The articles also seemed like they were written with a definite goal in mind, not only that but they were written with a start and a finish and in-between they slowly increased the new facts learnt. I found this made them easy to read and understand and you slowly learnt another idea.

If you already have a good knowledge of the Object Orientation and Design Pattern's then you will probably not find many of the links that useful but I think you will find a few.

The site is from Joseph Bergin, Ph.D. who is a Professor of Computer Science, have a look here if you want to see a picture http://csis.pace.edu/~bergin/bio.htm

I have read a few the links but still have some more to read but the sections I found most interesting were

Java, Object-Orientation, and Design Patterns -- Examples and Commentary
Elementary Patterns (Patterns Intended for Novices)
Java Related
Extreme Programming (XP)

This sections on the page have a number of links to interesting articles and well worth checking out