Entries from January 2010 ↓

Continuos Integration is the practice of integrating changes from many people as often as possible. Instead of merging changes once a month and spending time handling merge errors you try integrate every day, perhaps even every hour. Each integration is built and tested on a server. If there are build errors or test failures, you [...]

There are a few simple steps to get nice graphic presentations of FindBugs results using Maven.

First, to enable FindBugs reporting in Maven, just add report section to your pom files, something like example below, but of course, you can do your own configuration.

The latest issue of our magazine Jayview is out with brand new look and feel. My contribution was a cool piece of code that gets rid of those annoying exceptions. However, during layouting the link to the source disappeared. Credit should of course go to Reinier Zwitserloot and his mail on Java Posse. public class [...]

A luxury that you seldom have in the world of software development is the luxury of starting over. I am not talking about throwing away everything and start from scratch. But just taking what you have, and all the experiences learned. Apply some major refactoring to make what works really shine, and without care of [...]

I’m going to guess that most of you know what instrumentation is. In the event that you don’t, instrumentation is a feature in which specific monitoring of the interactions between an application and the system is made possible. Instrumentation also makes it possible to write test cases that interact with the application. The problem with [...]

JNI or Java Native Interface is the interface between the Java code running in a JVM and the native code running outside the JVM. It works both ways, that is you can use JNI to call native code from your Java programs and to call Java code from your native code. The native code normally [...]

I really like static typing, but sometimes it can get in your way. For instance if you have a collection of objects and you want to perform an operation on the objects of a certain subclass you can run into problems.

Some of you may remember the article, by Bruce Tate, Don’t Make Me Eat the Elephant Again. It was an article about EJB, and Bruce was begging Sun not to make the same mistakes with EJB3 as they had done with EJB, and EJB2. They didn’t, Spring came along as better alternative and forced EJB3 [...]

Problem When working on www.beertoplist.com I ran into a Maven problem, that is fairly common: Having a project that should be configured differently for different environments. That is for instance you want one configuration for development, one for test and one for production. I wanted a solution that allowed me to make changes to all [...]

I just read, or rather skimmed, the book, called Everyday Scripting with Ruby and it is awful. I had high expectations. I was expecting something like Perl for System Administration, where you right away get into hard core Perl scripting. This book is nothing like that! It is a really basic introduction to Ruby, and [...]

Enterprise applications and mobile applications have quite different requirements. Starting an enterprise application is just something you do once before it continue running for months or years. On the other side of the spectrum most mobile applications seldom runs for more than minutes, run by a bored users standing in line or riding the bus. [...]

Test Driven Development, or TDD for short, is a simple software development practice where unit tests, small focused test cases, drive the development forward. This is most easily explained by the Three Rules of TDD that dictate the following: You are not allowed to write any production code unless it is to make a failing [...]

Last tutorial was about transformations. This tutorial will be a short one. I’m going to talk about adding color to your mesh. I will continue with the source code from tutorial II. Adding color 3D models with no colors are pretty boring so let’s add some color to it. In general colors need no explanation. [...]

The Cocoa and Cocoa Touch frameworks has a really nice function for acquiring a localized string NSLocalizedString(). Just pass in a key and you are done, for strings that are known at least. Sometimes you are getting unknown strings from a data source not under your control, strings representing just a fraction of the text [...]

Last tutorial was about building your polygons. This tutorial is all about transformations, how to move the polygons around. I will continue this tutorial from where the previous ended so you can use that source code or make a copy of it. I am not going to bore you with a lot of mathematics but [...]