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J2EE

Next week I will be presenting a free webinar about Java EE 6 and Glassfish 3.1. The title can be translated to English as: "Java EE 6 and Glassfish 3.1: Simplicity + Ligthness = Productivity". The reason the title is in Portuguese is because this will be a webinar targeted at Brazilian Java EE and Glassfish users - as far as I know it will be the first webinar in Portuguese on these...
on Jun 14, 2011
One of the exciting things about teaching is the fact no matter how well you prepare for a class, events will always surprise you.Yesterday I was caught by surprise in the middle of a class by what seemed like a global Glassfish admin console outage. I was teaching my Software Architecture students at IGTI how to change the default maximum thread pool size for the HTTP listener in Glassfish 3.0.1...
on Nov 10, 2010
Btrace is a wonderful tool for debugging complex application problems. I have used it recently to debug a strange finalizer problem in an application running on Glassfish V3. Since getting it to work with v3 wasn't very straightforward, I will share my findings here in case someone else is trying to do the same... BTrace works as a JVM Agent, which means it gets the chance to modify classes...
on Jul 14, 2010
CDI (Contexts and Dependency Injection for the Java EE platform) is defined in JSR-299 and enhances support for dependency injection in Java EE 6. The more I use CDI the more I like it...However, I couldn't find a simple example of how to configure your application with CDI by reading configuration attributes from a file. Here is an example of how it can be done: Specifying injection points...
on May 18, 2010
In this post I will share my recent findings about Container Dependency Injection in Java EE 6, in particular how to decouple the processing threads of  event producers and event consumers. Java EE 6 introduces a very nice dependency injection framework (CDI) that has superb support for the Observer pattern in the form of event broadcasting. An Event in CDI is just a regular POJO: public...
on Apr 14, 2010

JavaOne

I had originally planned to write a blog post per day during JavaOne 2010. That being my first JavaOne I was of course completely unprepared for the hectic routine of sessions, meetings, parties and more sessions. I wrote blog posts in the first two days and disappeared ever since. I am alive, well, and back to Brazil. I had a terrific time in San Francisco where I got to meet a lot of...
on Oct 7, 2010
It was my first day at JavaOne 2010 today. And what a day! The kick off for me was the Glassfish community event. The room was packed with Glassfish users and developers. It was nice meeting in person people I have been reading and interacting with online for such a long time. There was a presentation on the Glassfish product roadmap and a break out for discussion of many Glassfish-related topics...
on Sep 20, 2010

NetBeans

One of the not-so-great things about developing Java web applications is the fact that, after a few redeployments, sooner or later the web container JVM needs to be restarted due to Out Of Memory errors. This has been true in every combination of development environment and web server I have used so far, and until last week Netbeans 6.8 + Glassfish 3.0.1 was no exception. The cause of Out Of...
on Jun 10, 2010