Most valuable Java bytes of the week (15-22.02)

If you want to follow all Java User Group leaders on Twiter, here is an opportunity.

Click on the Image to visit this list.

An overall guideline for this program is that we want to gather up the enthusiasm and skill sets of Java developers around the world, but then focus their efforts at specific areas within JSRs. For example, this means that for the latest complex language features in Java 8 we'll encourage most 'Adopt a JSR' members to try the latest builds, evangelise the betas to major open source projects and to provide feedback on day-to-day usage. A smaller number of JUG members who are really qualified in the area of language design (if you think syntax is the important bit, then this probably isn't you) will be encouraged to contribute more directly. This of course includes enthusiasts who are willing to put in the time to really learn about this stuff. As Yara from SouJava pointed out at Devoxx, this is a great opportunity to also mentor budding experts in the various JSRs, so that there is a path for those who want to travel it.

Do it!

What is "state" in your web application? It's the data that gets stored (regardless of the destination - memory, database, file-system). The application itself must not store any state in the code. This means your classes should only have fields with objects that are also stateless. In other words - you should not store anything in your services, DAOs or controllers during the program flow. This is a complete "must" for your service layer. Why?

Must read. I mean it! Click :)

Atom Hopper is a Java based ATOM publishing server based on Apache Abdera. You can read some of my previous articles here and the full source code can be found here as well as the up to date wiki. Today I'm going to discuss some of the new features that have been added and what is happening in general.

As of the date of this article we are actively testing the latest build of Atom Hopper which we are calling a release candidate at this point. As you can tell by the release notes we've been incrementally fixing bugs and adding features.

Go, go, go!

Last November, I traveled to Antwerp to speak at Devoxx. After my talk on HTML5 with Play Scala, Mattias Karlsson approached me and we had a chat about doing the same talk at Jfokus in Stockholm. I agreed and we began talking details after Trish and I returned to the US.

I wrote this article on a plane between Denver and Seattle and will be hopping over the North Pole to Stockholm via Iceland tonight. For the past couple of weeks, I've been updating my Play More! HTML5/mobile app to add some new features. Most notably, I wanted to upgrade to Play 2.0, create JSON services and add authentication.

Read more here, right now. Go!

JavaOne Tokyo (Japan)
Date: (April 4-5, 2012)
Location: Academy Hills 49F, Roppongi Tokyo

JavaOne Moscow (Russia)
Date: April 17-18, 2012
Location: Russian Academy of Science

JavaOne Hyderabad (India)
Date: May 3-4, 2012
Location: Hyderabad International Convention Center

If you want to see your content here, please drop me a line to bogo@zeroturnaround.com or via @wearejrebels twitter account.