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DDD (Domain-Driven Design) + Java EE "Hanginar" on Thursday

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My former colleague at Oracle and fellow Java EE advocate Arun Gupta has been up to something pretty cool - what he calls "Java EE Hanginars". The idea is essentially to have a series of webinars on various Java EE topics using Google Hangout. The format is also a bit different - the idea is to be more code and Q & A centric rather than lecture centric. He gathers a set of questions from the community on the topic before the webinar for live discussion. Thus far he has had good success covering a number of topics including Hibernate OGM, OSGi, jOOQ and CI/CD using Java EE. You can find all of the webinars thus far here. For the fifth webinar in the series, it's now my turn :-).

I'll be talking about a topic that's been near and dear to me as a former Java EE architect/consultant for a while - Java EE and DDD (Domain-Driven Design). The Java EE part is probably obvious to most of you, but the DDD part may or may not be. DDD is an architectural style that strongly emphasizes reflecting the business domain in software development. Though there are some superficial similarities with the classical J2EE design patterns, in my view DDD is a cleaner, more modern and more OO centric design paradigm. Interestingly DDD concepts like the bounded context are becoming increasing important in determining sensible application partitioning amongst the microservices hype of the day. I think Java EE is actually an excellent fit for DDD (and vice versa). To demonstrate how marrying Java EE and DDD is done, I started a small side project a few years ago at Oracle named Cargo Tracker. As a nice (somewhat intended) side-effect the project is actually a good non-trivial example of a working Java EE (7) application. Do feel free to check out the linked site if this intrigues you.

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Published at DZone with permission of Reza Rahman, DZone MVB. See the original article here.

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