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Databases

Using the Java 8 Date Time Classes with JPA! With the Java 8 SE release, developers get a splendid new best-in-class Date-Time API. Wouldn't it be nice if you could use it with JPA? Not so fast. JPA and for that matter JDBC know nothing about the new classes, and if you use them in your entities, JPA will map them to BLOBs in your database by default. This happens in DDL or database creation, in...
on Jun 17, 2014

Accessibility

Have you recently checked out your company’s web presence and thought to yourself that it was in dire need of an update? But then maybe you started imagining the pain of pushing new data there, and resigned at the mountain of work ahead. Or maybe your mind turned to even more pressing problems with the site - maybe it doesn’t render correctly on mobile, or no updates get pushed into social media...
on Jun 5, 2014

Community

Tech Tip #25 showed how to configure WildFly on Raspberry Pi. Tech Tip #27 showed how to setup WildFly on two Raspberry Pis in managed domain mode. This tech tip will show how to setup a WildFly cluster over those two hosts. WildFly supports mod_cluster out of the box. There are several advantages of mod_cluster: Dynamic configuration of httpd workers Server-side load balance factor calculation...
on May 30, 2014
Tech Tip #25 showed how to configure WildFly on Raspberry Pi. This tech tip will show how to setup a WildFly managed domain over two hosts running on Raspberry Pi. Lets understand some basic concepts first. WildFly can run in two modes: Managed Domain allows you to run and manage a multi-server domain topology Standalone allows to run a single instance of server Multiple standalone instances...
on May 30, 2014
JBoss Forge is the fastest way to build your Java EE applications, and not even tied to a particular IDE or an Application Server. Tech Tip #17 explained how to build a simple Java EE application rapidly, and deploy it on WildFly. JBoss Developer Studio provide a very neat integration with Forge as well. The instructions from the video are also explained in a text-based script here. Forge is...
on May 7, 2014
[Republishing from http://wildfly.org/news/2014/04/25/Getting-Started-WildFly-OpenShift/] OpenShift provides an open source hybrid cloud application platform by Red Hat. It enables polyglot applications to be deployed on a public, private, and a hybrid cloud very easily. It provides an extensible cartridge-based architecture that allows a wide range of functionality such as frameworks, databases...
on Apr 30, 2014
40+ Java User Groups from 6 continents have participated in WildFly 8 Launch so far, and a few more are still lined up. This has truly been a global participation so far, and truly reflects the spirit of Java community. Several of these were delivered virtually primarily using G+ hangout, and then some in person during the travel by WildFly team. Lots of interesting conversations and feedback...
on Apr 29, 2014
Inaugural JavaLand in Germany It took trains, planes, and automobiles to get there. I had heard Germany ran some great conferences, but JavaLand was promised to be outstanding. Kevin already did an interview with one of the organizers, Markus Eisele, about why JavaLand is different. (https://weblogs.java.net/blog/editor/archive/2014/03/01/java-conferences...) But, I got to see first-hand if they...
on Apr 20, 2014

Deployment

On January 2nd I received a New Year's gift, my "Welcome to Oracle Cloud" email. I had requested a 30-day free trial back on October 17, when the Oracle Cloud was first announced, and had basically forgotten all about it. If you haven't already, request a trial account for yourself: The Oracle Cloud integrates very nicely with Eclipse, NetBeans and JDeveloper, where you can develop and...
on May 29, 2014

Programming

Recently, there is a heaty debate regarding TDD which started by DHH when he claimed that TDD is dead. This ongoing debate managed to capture the attention of developers world, including us. Some mini debates have happened in our office regarding the right practices to do testing. In this article, I will represent my own view. How many kinds of tests have you seen? From the time I joined industry...
on May 28, 2014

Servlets

Server-Sent Events (SSE) is part of HTML5. SSE is a simple, undirectional communication from server to browser. It allows server to push data to client once a connection is established. The entire point of SSE is to make it easy for the server to push messages to the browser, once the browser has first established a connection to the server. These messages are of the form "field: value" with...
on May 21, 2014

Blogging

Recently, we were tasked to develop a SAAS application for big data analysis. To do data mining, the system need to store multi billion public posts in the database and run the classification process on them. Classification in our context is a slow, resource intensive and painful process to assign a topic or sentiment to any record in the database. The process can last up to 24 hours with our...
on May 20, 2014
Did you know that events where JBoss technologies are presented are listed in a calendar ? Are you talking at an event about JBoss technology and its not listed here ? Do you know of any event where JBoss technologies are talked about and not listed in this calendar ? Send us a request by filling this form. Subscribe to this calendar using any of the following links:    Here is a sampling of...
on Apr 30, 2014
This a fun story rather than a deep technical discussion of some performance issue, measure or tool. My memory was jogged by a story (http://www.folklore.org/StoryView.py?story=Negative_2000_Lines_Of_Code.txt) in which Bill Atkinson reported producing -2000 lines of code on his weekly productivity report and by Kevlin Henney retweeting one of my one liners, features are the asset, code is a...
on Apr 2, 2014
"First-class functions in Java 8" - is a video tutorial from Java 8 in Action: Lambdas, Streams, and functional-style programming by Raoul-Gabriel Urma, Mario Fusco, and Alan Mycroft. The video can be found here: http://youtu.be/Rd-sqHjmfB0 Java developers are hearing a lot of buzz about functional-style programming, especially with Java 8's addition of lambda expressions. This video introduces...
on Mar 17, 2014

J2SE

Runtime type information (RTTI) refers to the correct identification of the type of your objects at run time. When you write code, it is generally desirable to do so in a way that takes advantage of OOP features like encapsulation and inheritance to make your program easily extensible, by for instance, as much as possible manipulating references to base classes and letting polymorphism work for...
on Apr 21, 2014
In this post, I try to give a reasonable account of Java's error handling system being as it is that the handling of errors is a concern that any reasonable programming language must find some way to contend with. Java's error handling methodology is based on an idea of exceptions. An exception is a condition that prevents your program from further executing along the current path. It signifies...
on Mar 5, 2014

Web Applications

While parts of the cloud IT that are still being hyped are changing rapidly, the whole segment is not past the hype yet. The cloud report [1] that Gartner published 9 months ago still holds true today. Reports of disillusioned customers of such solutions [2][3] are a clear sign that the hype might have reached its peak for most parts of cloud offerings, though. And while many articles discuss the...
on Mar 30, 2014
I presented this demo at DevNexus 2014 in Atlanta today. It is Reza's demo with just a pinch more Java EE thrown in. This blog entry covers how to fully internationalize an AngularJS application with just a pinch of Java EE. Reza hosts the code for this demo on his github. The demo has a chat client and a todo list. This blog entry only looks at the chat client, and assumes basic familiarity...
on Feb 25, 2014

Swing

Nimbus is a cross-platform look and feel introduced in the Java SE 6 Update 10 (6u10) release. It's not a perfect look and feel for several reasons but it has great potential. One of these reasons is the lack of window decorations support (Bug JDK-6675399). You can check the window decorations support of a look and feel by simply call the method getSupportsWindowDecorations on it....
on Feb 26, 2014