Johannes Brodwal

Johannes is a leading figure in the Norwegian agile and Java community. He focuses on strategic use of open source in the enterprise and use of automated testing and integration in order to deliver mission critical projects.


Humble architects

Humility is not a very common trait with software architects. After having worked with a few awful architects and recently with a very pleasant one, I’ve compiled a few of my experiences in the way every architect loves: As a set of...

Announcing EAXY: Making XML easier in Java

XML libraries in Java is a minefield. The amount of code required to manipulate and read XML is staggering, the risk of getting class path problems with different libraries is substantial and the handling of namespaces opens for a lot

Having fun with Git

I recently read The Git Book . As I went through the Git Internals parts, it struck me how simple and elegant the structure of Git really is. I decided that I just had to create my own little library to work with Git repositories (as...

Offensive programming

How to make your code more concise and well-behaved at the same time Have you ever had an application that just behaved plain weird? You know, you click a button and nothing happens. Or the screen all the sudden turns blank. Or the...

A canonical web test

In order to smoke test web applications, I like to run-to-end smoke tests that start the web server and drives a web browser to interact with the application . Here is how this may look:

Om å løse alt bortsett fra det egentlige problemet

“Problemet med Java er at det krever så mange abstraksjoner. Factories, proxies, rammeverk…” Min samtalepartner gjenfortalte inntrykket han hadde av de Java-programmerende kollegene sine.

A jQuery inspired server side view model for Java

In HTML applications, jQuery has changed the way people thing about view rendering. Instead of an input or a text field in the view pulling data into it, the jQuery code pushes data into the view. How could this look in a server side...

A canonical Repository test

There are only so many ways to test that your persistence layer is implemented correctly or that you’re using an ORM correctly. Here’s my canonical tests for a repository (Java-version):

Loud failures are better than silent, faulty behavior

Sometimes, small questions lead to big answers. Sometimes these answers are controversial. One such question is “What does this warning about serialVersionUID mean”? All the advice out there basically is for developers who don’t know...

Teaser: Bare-knuckle SOA

I’m working on this idea, and I don’t know if it appeals to you guys. I’d like your input on whether this is something to explore further. Here’s the deal: I’ve encountered teams who, when working with SOA technologies have been...

How changing Java package names transformed my system architecture

Changing your perspective even a small amount can have profound effects on how you approach your system. Let’s say you’re writing a web application in Java. In the system you deal with orders, customers and products. As a web...

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