Java User Groups
Apache Thrift’s Role in Distributed Applications
By Randy Abernethy, authors of The Programmer's Guide to Apache Thrift
Apache Thrift helps programmers build high performance cross-language services to address the growing need for multilanguage integration. In this article, based on chapter 1 of The Programmer’s Guide to Apache Thrift, author Randy...
on Aug 1, 2013
The Cassandra's data base is a NOSQL column family's oriented, is a data base made to work of high performance, scalability and fault tolerant. In your new version, it gets some improvements like Cassandra Query Language third version, CQL 3.0 with storage with collections and key complex.
With improvements in Cassandra, there is a one problem: How do I use all potential of the Cassandra...
on Jul 23, 2013
The Browser Binding with a CMIS Repository
By Florian Müller, Jay Brown, and Jeff Potts, authors of
CMIS and Apache Chemistry in Action
A big part of the CMIS specification describes how the CMIS domain model is mapped to the bytes that are transferred. These mappings are called bindings. CMIS 1.0 defines two bindings, the Web Services...
on Jul 2, 2013
How did you first get into developing / coding?
My first encounter with a computer was in 1987 during a physics class. This particular one (a Commodore C64) went immediately to my Xmas wish list. When I teared away the gift wrapping, I found the datasette broken. A datasette was a tape drive using audio cassettes for storage – without it, there were no chance to play any of the bundled games;...
on Jun 24, 2013
As a developer, when you are building and/or designing a Java application;
the first (or one of the first) question you might ask is...
"What are the objects?"
This seems to be a very simple question. But it is not.
There probably is no single "right" answer to this question.
Nevertheless, careful consideration given to this question will contribute to
a good start to one's Java development...
on Jun 23, 2013
When we started building our first Java application, at my company Amway Corp, many years ago;
we learned our first lesson.
In spite of all the formal training we received, in spite of all the literature at our disposal;
we still needed help with our Java development on a regular basis.
Where would this assistance come from?
At the time, we had no in-house Java subject-matter experts.
on Jun 16, 2013
Using Throws and Throw Statements in Java
By Mala Gupta, author of OCP Java SE 7 Programmer II Certification Guide
In this article, based on chapter 1 of OCP Java SE 7 Programmer II Certification Guide, author Mala Gupta explains how to define methods that throw exceptions, the different combinations of defining overriding methods, and when the overridden or overriding methods...
on Jun 13, 2013
The data computation layer in between the data persistent layer and the application layer is responsible for computing the data from data persistence layer, and returning the result to the application layer. The data computation layer of Java aims to reduce the coupling between these two layers and shift the computational workload from them. The typical computation layer is characterized with...
on Jul 31, 2013
Recently, I read Why Big Data Projects Fail by Stephen Brobst. I can’t agree more with his opinions which exposed the problem I’ve been worried about. In this article, I am going to further discuss this topic to remind the enterprises to beware of falling into such pitfall of failure.
Let’s have a look on a positive example. As a successful enterprise in leveraging big data, how does Google make...
on Jul 24, 2013
In Java development, we may encounter the complex set operations. Java alone is not powerful enough to save programmers’ efforts in implementing the computation details, which is time-consuming and poor in code reuse. In view of this, programmers usually resort to dynamic calculation script for set operation.
SQL is surely the first kind of script that comes into most programmers’ mind. However,...
on Jul 16, 2013
We thought we'd get to know a little more about the author!
I would say that a JS noob should use MVC, just because it’s widely spread pattern used across different programming languages. I think they would enjoy...
on Jun 14, 2013
Global Education and Learning
The 15th anniversary of OSCON showed its interest in diversity, and continuing to broaden the market for open source technology. I saw a lot of discussions on how to get people interested, and keep people involved. It was remarkably open to all sorts of ideas on how to keep open source going into the future.
I started with Tim Berglund’s GitHub Power Tools, which was filled with people who had...
on Jul 30, 2013
Lambda Expressions (JSR 335) are perhaps the most significant innovation in Java 8. Many consider Lambdas (or 'closures') a game-changing technology for the Java language. Our most recently completed Java.net poll asked the community for its take on the significance of Lambda Expressions as they pertain to company decisions on how quickly to migrate to and adopt Java 8.
A total of 490 votes...
on Jul 27, 2013
An interesting article: Social Enterprise Architecture that describes the idea of using the Social Technologies to improve the engagement and interactions of the business and IT, and the Enterprise Architecture organization to provide more structure and semantics to the interactions and collaboration tools in the enterprise.
There is a tool called Semantic Center that was written in Java and ADF...
on Jul 22, 2013
This brief blog entry explains the Mojarra bug triage process, and shares some tips for maximizing the chances your bug will be quickly fixed and find its way into a release. Mojarra is the JSF implementation in several app servers and is the source code from which the reference implementation of the JSF specification is derived.
Mojarra has had a publically accessable issue tracker since 2004,...
on Jul 15, 2013
Expression Language (EL) was first introduced as part of JSTL 1.0, was then moved JSP 2.0 and was unified with JSF 1.2 in JSP 2.1. In Java EE 7, EL is a new separate JSR, JSR 341. Many new features are introduced in EL 3.0.
This blog shows how to use new following new features of EL 3.0:
Lambda expression (section 1.20 of EL 3.0 spec)
The new operator ; to separate...
on Jul 1, 2013
Most voters in the just-completed Java.net poll on Java EE 7 believe that Java EE 7 will be the most widely used version of Java EE within the next few years. A total of 354 votes were cast in the poll, which ran for three weeks.
The exact question and results were:
How long will it be before Java EE 7 is the most widely used Java EE version?
14% (51 votes) - Less than 6 months
on Jun 30, 2013
Over the last few years we've been busily writing the latest and greatest version of Magnolia. After all of this focus on new and (we hope) great, it seemed like time to focuse on something old and great.
If you are old enough to remember the ZX Spectrum, the Commodore 64 or their various competitors, or if you like any kind of games, please keep on reading.
You might have heard of the qaop...
on Jun 20, 2013
Last week, I attended the global live launch of Java EE 7, a webcast I wrote about earlier, titled "Introducing Java EE 7." The live webcast happened twice (on at 17:00 GMT on June 12, and 12 hours later at 05:00 GMT on June 13), thus enabling every Java developer in the world to attend the live session at some point during non-sleeping hours.
The value of attending the live sessions was...
on Jun 19, 2013