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Java EE Clean Code[kill the bloat]

blog.adam-bien.com / twitter:@AdamBien

• Expert Group Member (jcp.org) of Java EE 6, Java EE 7, JPA 2.1, EJB 3.2, CDI 1.1, JMS 2.0 (...)

• Java Champion, (JavaONE) speaker + rockstar, freelancer, consultant and author: >100 articles, 7 German books,

• Author: “Real World Java EE Patterns– Rethinking Best Practices” and “Real World Java EE Night Hacks” http://press.adam-bien.com

• NEW: workshops.adam-bien.com

• http://kenai.com/projects/javaee-patterns/

http://java.net/projects/x-ray

blog.adam-bien.com / twitter:@AdamBien

Adam Bien, press.adam-bien.com

blog.adam-bien.com / twitter:@AdamBien

Adam Bien, press.adam-bien.com

blog.adam-bien.com / twitter:@AdamBien

“Perfection (in enterprise development) is achieved not when there is nothing more to add, but rather when there is nothing more to take away.”

--Antoine de Saint-Exupéry

General Advice: Don't Distribute (CAP)

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J2EE Patterns in Java EE

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It’s Not Overengineering...

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...It’s Cargo Cult Programming:

[http://en.wikipedia.org/wiki/Cargo_cult_programming]

blog.adam-bien.com / twitter:@AdamBien

“...Cargo cult programming is a style of computer programming that is characterized by the ritual inclusion of code or program structures that serve no real purpose...”

blog.adam-bien.com / twitter:@AdamBien

“...Cargo cult programming can also refer to the results of (over-)applying a design pattern or coding style blindly without understanding the reasons behind that design principle in the first place. Examples are adding unnecessary comments to self-explanatory code, adding deletion code for objects that garbage collection would have collected automatically with no problem, creating factory objects to build simple objects, etc. It often happens when programmers are inexperienced with the programming language, or simply overzealous...”

Verify Your Design With …Aliens

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...or ask a Ruby / Python developer...

Continuous Everything (Integration,

Deployment, QA)

Mocks, Unit-, Integration- and Stress Testing

Strict Separation Between Unit-, Integration-, and

System Tests

Java EE 6, Maven 3, Continuous Integration

And Git

Convention Over Configuration with DI

No, I don't want your XML!

Homegrown Frameworks?

JavaDoc Is Suspicious

DRY And DIE

package private fields or public setters?

Back To Java SE Thinking

Rich Domain Objects

No Interfaces

No Extensive Layering

Rethink J2EE Patterns

Rethink GoF Patterns

Factory

Observer

Builder

Facade

Bridge

Strategy

Decorator

Entity Control Boundary

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