Skip to main content

You are currently viewing the Trifork Blog, to view our full website please go to Trifork.com

Too many open files

Today I was asked to review a piece of code that a coworker of mine suspected was causing “Too many open files“ exceptions in a production environment The code looked innocuous enough. He was using ProcessBuilder to create and run an external application. Regardless I booted into Linux and ran some tests. Now on Linux […]

Spring 2.5 and Maven problems

It looks like the spring 2.5 jars that where uploaded to the official maven repository are broken. The full spring jar is 321 kb large and only contains the spring aop classes. Anyway I added springs own repository to my pom and then i got the correct jar and sources <repository>   <id>spring</id>   <name>Spring Portfolio Repository</name> […]

Extensibility jBPM style

Currently I am involved in a project that is moving away from a proprietary workflow solution to a JBPM based workflow solution. One of the first things I attempted to do was try and make jBPM integrate with the identity management solution used in the project. I knew that jBPM comes packaged with some sort […]

What to do with an Interruptedexception

Many java methods, such as Thread.sleep and Process.waitFor can throw an Interruptedexception. InterruptedException is a checked exception and as such requires you to explicitly catch it. Up until recently I’ve always simply swallowed this exception. I was fairly confident that this was the proper way to deal with this exception because this is how I’d […]

JPA missing non-exotic features

Ever since the Java Persistence API was announced there has been a lot of talk, both good and bad, about this specification. Many people have pointed out that a criteria API and something like hibernate filters are currently missing. However these features might be considered “exotic” and I can largely live without them. However a […]

Guice versus Spring

Craig Walls, author of spring in action just blogged on the subject of Spring and Guice. Pitting the two inversion of control containers against each other he concludes : “I’m glad that I spent the time to learn a little about Guice, but I’m not all that “juiced” about using Guice. In addition to all […]

Spring and DWR – Ajax made Easy

Direct Web Remoting (DWR) is an Open Source initiative that provides easy Ajax for Java. Besides being the best Ajax framework for Java developers, it has one more big feature, at least in my opinion. It integrates very nicely with Spring, by provides the means to easily remote your spring-managed beans to JavaScript. However, up […]