So let's talk about one of (if not the) largest, and most interesting framework hosted at Apache. Camel is essentially an implementation of the Enterprise Integration Patterns (EIP) book (which is a mandatory read for the serious dev!). It has so many contributions (and connections) that there is almost no popular system that it can't connect to. In this episode we dive into the reasoning and "spirit" of Camel, to make sense on how to use it. If you ever used Camel, or have run into camel and scratched your head, then definitively take a listen!




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• Apache Camel (should be your source for All Things Camel!)
• Enteprise Integration Patterns

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Have you ever wonder how bit masking work (or what is that?) and why do you need it? Or why a tree structure exists? (or what is breadth first vs depth first), or what are game trees? We put our Computer Science hat and go "depth first" in some fundamental compsci concepts, and, more importantly their utility, ending with Game trees (and they are not only used for games)!

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• Steve Yegge Blog (Get that job at Google!)
• Jeff Atwood Blog(Why Can't Programmers.. Program?)
• Bitwise Operations in Java
• Binary Trees
• Tree Parsing and Evaluation example
• Game Trees

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The State pattern is very useful, it's just hard to spot, and at the beginning a little hard to understand. On this podcast we cover the state pattern with a specific example of its use, plus tips on how to spot when to use it (really that's the hardest part of the state pattern). Check this podcast out, and add another pattern to your toolkit!

State Pattern (http://en.wikipedia.org/wiki/State_pattern)

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In this podcast we talk about the Model-View-Controller pattern (and is prettier cousin, the Model-View-Presenter), and go over how to go about implementing the MVC/MVP Pattern (really, what to instantiate first, and how to wire the whole thing). We also cover the caveats of implementing the MVC, including escaped references in construction, and making the view alway update from the model state. Lastly we talk about where to store view information (such as window size and colors, etc. Hint: not in the model). In all, if you ever needed to touch MVC code, this will help you light the path to awesome interaction! (and ease of unit testing)

http://googletesting.blogspot.com/2009/02/with-all-sport-drug-scandals-of-late.html(Google reference to the MVP pattern)

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In this episode we talk about the Decorator pattern and how it is applied. We cover a couple of caveats (especially when combined with the Observer pattern) and learn how to not be afraid of its verboseness. In all, it's the season of decorating, so let's decorate!

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In this week's podcast we talk about Design Patterns (and the Grand Dads of the Software Patterns, the Gang-of-four), and dive into our first design pattern (of many), the Observer pattern. We discussed how to implemented (within Java), and went to describe its use in Java Swing, and why anonymous inner classes for Listeners doesn't create memory leaks (most of the time anyways). In all a great introduction to a first pattern (see what they are all about!)