This video will provide an introductory overview of Android's architecture, the layout of an Android project, the use of various Maven plugins and tools for enabling dependency management in your Android project. When building Android apps, you can use a third party library, like Spring for Android, that provides an abstraction for consuming RESTful services within your native Android app. Spring Android also supports the use of Spring Social on Android, and this presentation will discuss how Spring Social can help you connect your apps to OAuth protected services like Facebook and Twitter. Be sure to thumbs up the presentation if you find it useful and subscribe to the SpringSourceDev channel to see other recordings and screencasts.

Prior to last year's JavaOne, I was in contact with Ryan Cuprak, president of the Connecticut Java Users Group (USA). The plan was that we'd get together at some point during JavaOne and chat. As it turned out, once JavaOne started it quickly became a whirlwind for me (and for Ryan, who presented at least 4 sessions at the conference). I was on the way to the airport on the last day of the conference, when my phone rang. It was Ryan: he was available for our chat! Not only did I not get to chat with Ryan at JavaOne (aside from the brief phone call), but I also missed all of his sessions. So, when I found out that Ryan would be re-presenting one of his JavaOne sessions at the March meeting of CTJUG, I decided to attend. The session Ryan presented was "Patterns and Best Practices for CDI" (which is now available on Parleys). At JavaOne, the session was co-presented with Reza Rahman, Java EE / EJB / JMS JCP expert and Resin appserver developer. Connecticut has no cities that can be called a metropolis. The capital, Hartford, has about 100,000 residents. So, I didn't expect hundreds of people to show up for the meeting. In fact, the attendance at this particular CTJUG meeting was just over a dozen. Most of the developers who attended work in the insurance industry (which is a major part of Connecticut's economy). Some of the attendees said they currently are not doing any Java work -- but they still like to attend CTJUG meetings! Three people (including me and my wife) were attending a CTJUG meeting for the first time. For me, Ryan's presentation was very informative, since I haven't worked with CDI (Contexts and Dependency Injection, JSR 299). Ryan covered the history of technologies that eventually led to its formulation, then went into detail on topics including Annotations (versus XML configuration), qualifiers, naming, scoping, stereotypes, interceptors, decorators, dependency resource injection, CDI integration, and extensions. Now, I'm not ready to call myself an expert on CDI after a one-hour presentation. But, I know a lot more about the genesis and utility of CDI than I did before. It seems like it can be applied to considerably shorten the Java EE development cycle. I was surprised to learn that CDI can also be used in Swing desktop applications. Similarly, I would not have guessed that mixing CDI and JPA can produce complications (since both technologies manage their own lifecycles -- Ryan says this problem can be bridged by CDI producers). Ryan cites the Arquillian unit testing platform as being the most important CDI extension. He notes that although Arquillian is a JBoss community project, it also works with GlassFish. If you'd like all the details from Ryan Cuprak's and Reza Rahman's JavaOne 2011 Patterns and Best Practices for CDI presentation, watch it on Parleys! Poll Our current Java.net poll asks How critical is it for JSR-310 (new Date and Time API) to be implemented in Java 8?. Voting ends this Friday, March 16. Java News Here are the stories we've recently featured in our Java news section: Tori Wieldt announces JavaOne India CFP Ends March 15; Dustin Marx asks How Badly Do We Want a New Java Date/Time API?; Geertjan Wielenga discusses Loosely Coupled Open Action; Kai Wähner explains Why I will use Java EE (JEE, and not J2EE) instead of Spring in new Enterprise Java Projects in 2012; Jasper Potts presents Canned Animations; Heather Van Cura announces JSR Updates-JSR 357, 356, 355, 354, 331; Michael Heinrichs answers Most often asked questions about JavaFX; Geertjan Wielenga demonstrates how to Plug A Custom BasicTabbedPaneUI into the NetBeans Platform; Barry Cranford reports Caspar Macrae recently won a trip to Jfokus 2012 through the LJC. Here is his experience..; Spotlights Our latest Java.net Spotlight is Geertjan Wielenga's Java Developer Conference in Cairo, Egypt: #JDC2012 (http://jdc2012.egjug.org), the biggest and most important meeting place for software developers in Middle East and Africa, here in Cairo is turning out to be a cool place to try out my Arabic. Part of the presentations are in English, so I've attended a keynote by Oracle's Mike Keith and Vaadin's Joonas so far... Previously, we featured Janice J. Heiss' Java Champion Jonas Boner Explains the Akka Platform: This series of interviews spotlights Java Champions, individuals who have received special recognition from Java developers across industry, academia, Java User Groups (JUGs), and the larger community. Jonas Boner is a husband, dad, programmer, teacher, speaker, author and Java Champion... Subscriptions and Archives: You can subscribe to this blog using the java.net Editor's Blog Feed. You can also subscribe to the Java Today RSS feed and the java.net blogs feed. You can find historical archives of what has appeared the front page of Java.net in the java.net home page archive. -- Kevin Farnham Twitter: @kevin_farnham AttachmentSize RyanCuprakPres.png17.96 KB

What does it take to build well-engineered Android applications? Explore Android's core building blocks and APIs in depth with this authoritative guide (updated to cover the Ice Cream Sandwich version of Android), and learn how to create compelling apps that work on a full range of Android devices. You'll work with proven approaches to app design and implementation—including application frameworks that you can use as a starting point for your own projects.

In this interview with InfoQ's Editor in Chief, Michael Floyd, Martin Odersky draws the comparisons between F# and Scala, discusses the future of Scala, and addresses once and for all the question of breaking binary compatibility. He also discusses his current work on the implementation of the value class proposal, how Java might support functional programming and the new Typesafe Stack 2.0. By Michael Floyd

appMobi releases jqMobi 1.0, its open-source HTML5 mobile app framework. - appMobi has announced the release of jqMobi 1.0, the initial generally available version of its new open-source HTML5 mobile framework for building apps for mobile devices. appMobi originally created and open sourced jqMobi to remedy the poor cross-platform performance of JavaScript frameworks...

Spring Insight is a developer tool that provides visibility into your application's runtime performance and behavior by tracing how low level SQL queries, transaction times and application pages are performing. Optimized out of the box for standard Spring-developed applications, Insight also provides a pluggable architecture for enhancing trace capabilities to provide further visibility into your application performance. In this video, John Kew, SpringSource Staff Engineer, describes the capabilities of Spring Insight's plugin framework and best practices in development of plug-ins. Spring Insight is part of vFabric tc Server Developer Edition and SpringSource Tool Suite. Be sure to thumbs up the presentation if you find it useful and subscribe to the SpringSourceDev channel to see other recordings and screencasts.

Mobile application developers have to make a choice of whether to go with native development or Web or even a hybrid development strategy to build apps for the devices they want to support. - When a programmer starts looking at mobile application development, one of the first questions that comes to mind is whether to go native versus Web technology. Although Objective-C is key for building native iOS apps, Java for Android and BlackBerry, and C# and Visual Studio tools for Windows ...

The health care industry has been migrating to electronic medical/health records (EMR/EHR) for some time. Hopwever, problems such as performance and scalability, along with maintaining traceability and reconstructing healthcare related business events need to be addressed. The article introduces the use of techniques and patterns for providing these quality attributes. By Arunava Chatterjee

When Sun's developers created Java, they tried to keep the syntax for Java similar to the syntax for C++ so it would be easy for C++ programmers to learn Java. In addition, they designed Java so its applications can be run on any computer platform. In contrast, C++ needs to have a specific compiler for each platform. Java was also designed to automatically handle many operations involving the creation and destruction of memory. This is a key reason why it's easier to develop programs and write bug-free code with Java than with C++. To provide these features, the developers of Java had to sacrifice some speed (or performance) when compared to C++. For many types of applications, however, Java's relative slowness is not an issue. Microsoft's Visual C# language is similar to Java in many ways. Like Java, C# uses a syntax that's similar to C++ and that automatically handles memory operations. However, in practice, C# code only runs on Windows. Because of that, C# is a good choice for developing applications for a Windows-only environment. However, Java is a better choice if you need to develop crossplatform applications.

JMS providers like ActiveMQ are based on the concept of passing one-directional messages between nodes and brokers asynchronously. A thorough knowledge of the type of messages that can be sent through a JMS middleware can simplify a lot your work in mapping the communication patterns to real code.The basic Message interfaceSome object members are shared by all messages: Preview Text: ...

I've been neglecting my blog, but just a quick note to mention that my latest talk at JavaOne, DSLs with Groovy, is posted up on Slideshare. The talk's designed for someone with no significant Groovy experience (unlike most Groovy DSL talks), so if it's interesting to you, check it out. I'm hoping (but not promising) to turn the talk into a series of Blog entries in the coming weeks. So if you want, just wait, and I'll send you explanations in more digestible bits and pieces in the coming weeks. (As usual, this entry is cross posted to my main blog site.)

The order you add double values can give you different results. This gets worse as the sum approaches 0 as the error is large compared with the result. Something I found interesting recently is seeing how many possible results you can get depending on the order you sum the values. Looking at variations on the sum In the...

In my previous post I described how I tested formatting in an Eclipse editor. The decision to write a functional test made sense back then because I didn't know how formatting internally works but I knew what to expect from formatting, from the user's perspective. In addition, I was itchy to try this cool tool, SWTBot...

One of the fears people have with Node is the callback model. Node operates as a single thread: you must never do any work, especially any I/O, that blocks, because with only a single thread of execution, any block will block the entire process. Reference: ...

The current Java.net poll question is, "How critical is it for JSR-310 (new Date and Time API) to be implemented in Java 8?" At the time of my writing of this post, nearly 150 respondents have voted and an overwhelming percentage have answered either "Very" ( Reference: ...

I confess, Vaadin 6 was good, but Vaadin 7 is even better. This article will detail most nastiness that is managed by this new version so that we only have to code a few lines to achieve our goals. One of such goal is the search of information about the request and the client. Reference: ...