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Java User Groups

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. What we...
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
Learning Java (or any programming language) can be a great challenge. Any group of developers, learning Java, will bring with them a variety of backgrounds and experiences. In our case, our first Java project began with developers that had COBOL language experience. Our second Java project, began with developers that had RPG language experience. Even though COBOL and RPG don't "look" like Java,...
on Jun 11, 2013
Introducing Behavior Driven Development By John Ferguson Smart, author of BDD in Action Behavior Driven Development (BDD) is a software engineering practice designed to help teams build and deliver more valuable, higher quality software faster. In this article, based on chapter 1 of BDD in Action, author John Ferguson Smart explains how Backbone helps to solve this problem in a...
on Jun 10, 2013
Backbone.js: In the Beginning, There Was JavaScript by Samuel M. Breed, author of Backbone.js in Action Backbone is a library for structuring web applications. Since the dawn of the Internet, forward thinking developers have known that it is more than just a means of serving static HTML documents, but rather a platform made for applications. JavaScript has evolved into an ecosystem that's...
on Jun 6, 2013
Pig from a Bird's Eyeview by M. Tim Jones, author of Pig in Action Today, we are being inundated with data. So much so, that IBM estimates that in 2012, 2.5 quintillion bytes of information are generated every day. That's a million trillion bytes of data, more data than we can fathom and considerably more than we can easily process. Online, every web-page we visit, every link we click, every...
on May 20, 2013

Java Enterprise

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: Standalone environment 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 18% (65...
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
Asynchronous operation was introduced in Servlet 3.0. ServletRequest#startAsync is used to put the request into asynchronous mode. A thread need to be created implicitly or explicitly (see here for an example). Servlet 3.1, JSR 340 includes clarifications in asynchronous area. Besides Servlet 3,1, Concurreny Utilities for Java EE 1.0, JSR 236 is introduced in Java EE 7. JSR 236 provides a...
on Jun 6, 2013

Java Desktop

Sebastiano Armeli-Battana is the author of the successful 'MVC Applies to JavaScript' eBook. We thought we'd get to know a little more about the author! 1. For someone that’s new to the JavaScript sector, can you explain why they should use MVC? 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
Acteur is a pattern for pipelining work - a little DI functional goodness for Java. I might have been speaking Swahili when I wrote about Acteur last month. So here's a simple explanation of the design pattern behind it, with a simple sample project.
on Jun 5, 2013

Global Education and Learning

Test Driven Development (TDD) has become a cornerstone of modern software craftsmanship. Behaviour Driven Development (BDD) takes it to the next level; it provides easier to use and a more readable syntax as well as many other improvements. If you haven't used Test Driven Development before, start with BDD, you will reap the benefits much faster. This book is a hands-on introduction on BDD. Using...
on Jun 12, 2013

Open JDK

Java 8 will introduce (or introduces it depends if you have already played with the betas or not) a new full featured feature, lambdas. Instead of explaining the syntax, the semantics, how it's integrated with java.util, yada yada. Let's take an example and see how lambdas can be used by users and developers of APIs. Let suppose I want to design a JUnit/TestNG replacement, basically these two...
on Jun 10, 2013

Java Web Services and XML

Following the development of Java EE 7 has required reading lots of different posts about the different JSRs that are part of Java EE 7. On Wednesday, June 12 (or Thursday, depending on where you live), you'll have an opportunity to familiarize yourself with Java EE 7 in one sitting, by attending Introducing Java EE 7, a live global interactive webcast that will happen twice: at 9 AM Pacific...
on May 31, 2013