Java Weekly 7/15: Clustering WebSockets, Batch API Lab, Valhalla and more...

The Java world is evolving at a rapid pace and it can be challenging to keep track of it. Fortunately lots of great resources are created every week, explaining new features or looking at existing stuff from a different angle.

I am using the Java Weekly series to collect the most interesting links I found during the last week and present them to you all in one place. I hope you find it useful and that it makes it easier for you to keep up-to-date. If you like to suggest a resource or something I can improve on, please leave me a comment.

Java EE

Navin Surtani posted the second part of his series about clustering WebSockets on Wildfly. 

In the first part, he described the overall architecture, how to configure the Wildfly server for Amazons EC2 and had a look at some parts of the server and client code: Clustering WebSockets on Wildfly.

The second part describes how to setup and use Infinispan to store the data of the application: Clustering WebSockets on WildFly - Part 2.

Arun Gupta presented the next issue of his Hanginar series. This time Reza Rahman gave an interesting presentation about Domain Driven Design using Java EE.

There was a Hands-on-Lab on the Java Batch API (JSR 352) held at JavaOne2014. It used 5 exercises to go from an introduction to some of the most advanced features. 

I have good news for you, if you could not attend it (like myself). David Delabassee wrote last week, that it is available on github: Batch API Hands-on Lab.

OpenJDK

Project Valhalla is an experimental project to develop major new features for Java. One of them is the usage of primitives in generics. Ivan St. Ivanov tried the current version of this feature with the Bulgarian JUG and started an interesting blog series about it: Primitives in Generics, part 1.

In this first post, he has a look at the current state of generics in Java and explains some of the reasons for not supporting primitives. The next issue will show the current state of the proposal in the Valhalla project. I can't wait to read it :-)

Java EE 8

Arjan Tijms posted some insides from the work on the JSF 2.3 specification and described some new features related to the alignment with the CDI specification and an additional lifecycle event: What’s new in JSF 2.3?

This and that

Do you know JBoss Forge? It is a great tool to speedup your development and among other great things, avoid the ridicules copy and paste during project setup. Normally it is used as a plugin for eclipse and intellij or as a command line tool. But as George Gastaldi shows in this screencast, it can also be integrated into NetBeans: JBoss Forge NetBeans integration.

Upcoming online events

Arun Gupta will give his talk Package your Java EE application using Docker and Kubernetes at 5pm UTC on Thursday 12th at the vJUG.

One hour later (6pm UTC on Thursday 12th ), Stéphane Épardaud will give his talk Ceylon From Here to Infinity: The Big Picture and What's Coming at the vJBUG.

See you next week!

These were the most interesting resources I found this week. I hope you find them useful and I see you next Monday for the next issue. You can subscribe below to get an email notification for it or follow me on twitter and google+.

If you like to suggest a link for next weeks issue or something I can improve on, please write me a comment.