I’m uploading the slides and the demos from my presentation about CDI – Contexts and Dependency Injection for the JavaEE platform. Here is the presentation (also available on SlideShare) HereContinue reading
Password strength checkers appear from time to time on web registration forms. But in my opinion they are useless. I’ll justify. Jeff Atwood lists the possible ways to obtain one’sContinue reading
The JPA EntityManager there are the merge() and persist() methods. In hibernate there’s more – save, persist, saveOrUpdate, update, merge. I’m always using merge() for the sake of simplicity, butContinue reading
In the light of this article which was criticized for not mentioning JavaEE6, I’m going to discuss JavaEE6 innovations. JavaEE 6 is still new – only one application server isContinue reading
Recently I started working on a project, in my spare time, and I hope it will eventually get large amounts of data, so I started thinking about scalability very early.Continue reading
A well-abstracted DAO layer means that the service layer doesn’t know anything of the persistence mechanism. This is generally desirable – you can later switch to a different storage –Continue reading
In the past hours I’ve been implementing a sample JMS+MDB+JPA application. I had to read quite a lot of tutorials, documentations and other samples, because I had no prior experienceContinue reading
On an interview I was given a task to implement a simple messaging system, using timers, message-driven beans and a build tool of my choice. This, of course, had toContinue reading
The TimeZone (as well as the locale and encoding) are retrieved by the JVM from the operating system. This in my opinion is not a good decision, but that’s notContinue reading
Eric Evans has formulated what domain-driven design (DDD) is. Martin Fowler is a great supporter and advocate of DDD. These are remarkable names and it is almost certain they areContinue reading