Thursday Jun 18, 2015

Hot Java Topics at the VTS!

In its 20th year, Java is used by over 9 million developers working in every major industry. In the next Virtual Technology Summit, you will learn how to program a parallel application with Java 8 lambdas, build a robot with 3D printed parts and use Docker, a best-in-class platform to test and manage releases. VTS is a series of interactive online events with hands-on sessions and presenters answering technical questions. The events are sponsored by the Oracle Technology Network (OTN). They are free events but you must register. Join the next exclusive events close to you  

Americas - July 14th - 9am to 12:30 PST - Register
EMEA - July 15th - 9am to 12:30pm BST - Register
APAC - July 23rd - 3pm to 6:30pm AU/SYD - Register

The three sessions are: 
  • Docker for Java Developers with Roland Huss 
Docker, the OS-level virtualisation platform, takes the IT world by storm. In this session, we will see what features Docker has for us Java developers. It is now possible to create truly isolated, self-contained and robust integration tests in which external dependencies are realised as Docker containers. Docker also changes the way we ship applications in that we are not only deploying application artifacts like WARs or EARs but also their execution contexts. Beside elaborating on these concepts and more, this presentation will focus on how Docker can best be integrated into the Java build process by introducing a dedicated Docker Maven plugin which is shown in a live demo.
  • Pi on Wheels,  Make Your Own Robot with Michael Hoffer 
The Pi on Wheels is an affordable open source DIY robot that is ideal for learning Java-related technologies in the context of the Internet of Things. In this session we will talk about how 3D printing works and how it can be utilized to build robots. The most fascinating aspect of 3D printing is that is is astonishingly easy to customize the robot. It allows you to build something completely new and different. We provide a Java based IDE that allows you to control and program the robot. In addition to that it can be used to programmatically design 3D geometries.

  • Shakespeare Plays Scrabble with Jose Paumard

This session will show how lambdas and Streams can be used to solve a toy problem based on Scrabble. We are going to solve this problem with the Scrabble dictionary, the list of the words used by Shakespeare, and the Stream API. The three main steps shown will be the mapping, filtering and reduction. The mapping step converts a stream of a given type into a stream of another type.Then the filtering step is used to sort out the words not allowed by the Scrabble dictionary. Finally, the reduction can be as simple as computing a max over a given stream, but can also be used to compute more complex structures. We will use these tools to extract the three best words Shakespeare could have played.

Tuesday Jun 16, 2015

Create Test Logs Like Javadocs

In a new article, Madhu Seelam and Raghunandan Seshadri describe how to build a test framework that ensures logs from test classes and TestNG listeners that are executed in parallel reach the appropriate log file and are organized in a format similar to that of Javadocs.

TestNG is a popular open source test automation framework that provides support for parallel test execution. Java Logging APIs can ensure thread-safe logging from numerous threads and logging within test cases, as well as callback functions within listeners. However, when tests are executed in parallel, the logs from various test cases are interleaved, which makes it difficult to isolate the logs for a given test case.

Using the solution described in this article, all logs from a given TestNG test class reside in one HTML file, and HTML files can be linked into a format similar to that of Javadocs. This enables you to select a package and select the corresponding class to view the logs related to just that test class, even when the tests have been executed in parallel. Read the article

The Ghosts of Java EE 7 in Production: Past, Present and Future

By Guest Blogger Reza Rahman from Original Blog

  "First they ignore you, then they laugh at you, then they fight you, then you win."

                                                                                                                 – Mahatma Gandhi

For those unfamiliar the three ghosts analogy comes from the Charles Dickens' classic A Christmas Carol. I hope the real message of the analogy is an entertaining but insightful literary puzzle for you to figure out, not to mention the far less imaginative opening quote largely along the same lines :-).

In the past few days I've seen a certain predictable group of folks on the Interwebs feigning concerns over the viability of using Java EE 7 in production. I have to be honest in that I think it is fairly obvious these concerns are more -ahem- opportunistic than sincere or well-intentioned. Nevertheless I think this is a great trigger to discuss something valuable to the Java EE community anyway - Java EE 7 production adoption in the near past, present and near future. In fact to be perfectly honest we have been deliberately covering these themes all along in various ways and foresee a useful purpose in revisiting them frequently going forward far beyond this one blog entry. Being responsible sentinels for the Java EE community has never demanded anything less.

The Prelude - Java EE 6 vs Java EE 7
Most folks out there seem to hold the Java EE 6 release in high regard. I definitely agree the release was an important turning point for Java EE. While Java EE 7 is not a profound architectural paradigm shift in the way Java EE 5 and Java EE 6 was, it's significance is in the sheer amount of changes it contains. Java EE 7 is very easily the largest set of changes the platform has ever experienced. To boot we try to never make frivolous changes to the platform so each of these changes are all rather important to their respective users. To understand the scale and significance of these changes, you need not look much farther than my Java EE 7 slide deck. It is a very high level talk that I still struggle to fully deliver in 50-60 minutes after delivering it many times.


[Read More]

Wednesday Jun 10, 2015

NightHacking Interviews at GeekOUT

I will be doing some NightHacking interviews at the super-technical (and sold-out) GeekOUT Java conference in Talinn, Estonia.

Watch the interviews live on the NightHacking home page on Thursday and Friday of this week: http://nighthacking.com/

Here is the full interview schedule (all times in Eastern European Time [EET] or +3 hours UTC) 

Thursday (June 11th) Friday (June 12th)
10:30-11:30 20 Years of Java Panel featuring Konrad Malawski, Markus Eisele, Andres Almiray, Sven Peters, and Ed Burns

12:30-1:30 EET

Charles Nutter - As Fast as C Ed Burns - Servlet 4.0
2:30-3:00 Nitsin Wakart - Lock Free Queues
4:00-4:30 Tomasz Nurkiewicz - Aynchronous Processing

The recorded videos will be uploaded immediately after the event on the NightHacking GeekOUT Video Archive.

Monday Jun 08, 2015

Java EE 8 Roadmap Update

By Guest Blogger: John Clingan from original post

Java EE 8 was formally launched in September 2014 with the JCP’s unanimous approval of JSR 366 and our announcements at JavaOne.  At JavaOne 2014 we presented a summary of our areas of investigation for Java EE 8 during the Strategy Keynote, followed by numerous in-depth presentations on our intended work by the specification leads.  The goal that we set for ourselves then was to complete this work by JavaOne San Francisco 2016.

Although we all like to do (and hear) big things at JavaOne, the various latencies involved in launching expert groups as well as the other demands on the time of our spec leads has resulted in the date being pushed out a bit. We are strongly committed to transparency in our work on the Java EE Platform.  We are therefore publicly announcing that we are now changing our target time frame for the completion of this work to the first half of 2017.  We will be updating the target dates for the JSRs under the Java EE umbrella to reflect this change.

As a result of this shift, there is now more time and opportunity for YOU to get involved.  For example, the MVC  1.0 JSR has published their Early Draft Review, and the Java EE Security JSR will soon follow. We continue to encourage developers to track JSRs and provide feedback by viewing the individual JSR mailing lists, wikis, and download and try out early Java EE 8 reference implementation builds.  We've already seen a lot of interest not only in Java EE 8 features, but also in participation.  Many JUGs have been involved in adopting Java EE 8 and related JSRs, including the CJUGMorocco JUG, and a host of others.  Companies and individuals can get involved as well. For example, Serli, with a host of expertise in Java development, have contributed Application Versioning to GlassFish in the past, and are now signing up to contribute to the MVC reference implementation.

Start here and help define the future of Java EE! 

Professional Highlight: Amr Gawash, Oracle Certified Professional. Java SE 7 Programmer


Why did you choose to pursue Java Certification?

I work in a company that encourages employees to pursue and achieve their dreams. One of my personal dreams was to be certified in Java. Even though I had been working with Java for more than five years, I never had time to take the Java Certification exam. After my company encouraged me, I started to prepare myself to get the Java certification, and I did.

How has Java Certification changed your career?

My career changed the moment I stepped out of the exam. I realized how powerful a certification can be, how the community appreciated my contribution more, and of course how it made a difference to people looking at my resume. I also noticed how it increased my self esteem. Holding a Java certification also increased my sense of responsibility toward the Java community. I've started to become more active in Oracle forums and other QA websites. I contribute more to the community now and I also engage with local Java groups in my city.

What is one of the most important benefits of gaining a Java Certification?

I believe the most important benefit of earning a Java certification is the networking and community benefits you get when you are a certified in Java. Being certified has helped me get closer to, and make a positive impact on the Java community. Networking with other members of the community has become much easier and my engagement and responsibility towards the community have also been boosted.


Amr Gawish is passionate about technology and always tries to push the limits of the technologies he uses.

Amr completed his Bachelor's degree in Math and Computer Sciences from Al-Azhar University in Egypt and is currently pursuing his Master's degree at the University of Liverpool. He is employed as an Oracle Fusion Middleware consultant and is certified in Java SE 7, Oracle ADF, WebCenter Portal, and Oracle SOA Suite. 

Having more than six years experience in these products as well as the full Oracle Middleware stack, Amr has also gained experience in various other topics such as Gamification, Scala programming, and Akka. He is working on microcontroller programming with Raspberry Pi and Arduino and robotics.

You can learn more about him by visiting his website, www.amr-gawish.com, or follow him on Twitter (@agawish) or read his book (Oracle ADF Faces cookbook).


Thursday Jun 04, 2015

Discover the Java Hub

The Java Hub is the interactive center for technologists at JavaOne and OpenWorld in Brazil. You will discover new technologies and gear, meet experts, code with open source wizards, or hear technologists talk about their projects. Don't miss: 
  • NightHacking:  a live program where developers get interviewed and show off coding tips to a global audience. All broadcasts are live streamed on the NightHacking website http://nighthacking.com/
  • Device Showcase:  a hands-on demonstration of Java-powered devices of all sizes with Java experts from Oracle and the community. 
  • Oracle Technology Network(OTN): the source for technical learning resources to grow your skills and career. 
  • Hackergarten:  the meeting place of open source coders. There are no pre-requisites, you can stop by any time, join a group, pick a feature or bug you want to tackle, and submit results. You will learn from Java EE, Java SE, Java Embedded, and JavaFX experts on how you can impact the future of Java technologies. Bring your laptop and join us for an hour or so. WiFi and power are available.
  • 3D Modeling -  a 3D printer creates clones of Duke or your own model. Experience the entire process from the modeling interface to the "birth" of Duke. All of it happening with JavaFX 3D, Java Embedded, and 3D printing.

The Java Hub is open to anyone from 10:00 to 19:30, Tuesday to Thursday, in the Exhibition Hall at the Transamerica Expo Center. The Java Hub is brought to you by Oracle Technology Network. 

There is still time to register to JavaOne and OpenWorld 


Wednesday Jun 03, 2015

New Java Champion David Blevins

Congratulations to the new Java Champion David Blevins!

David is a member of the Apache Software Foundation and co-founder of the OpenEJB (1999), Geronimo (2003), and TomEE (2011) projects.  He founded the company Tomitribe (2012), encouraging developers to contribute to the Open Source communities he created. He is a veteran of Open Source Java EE for both the implementation and definition of Java EE specifications for over 10 years in order to make Java EE as simple, testable and as light as Java SE. 

As a member of the EJB 3.0, 3.1, 3.2 and Java EE 6 and 7 Expert Groups, David has contributed new APIs, enhancements and provided in-depth feedback to JSRs. Key contributions include the Embedded EJB Container API, the inclusion of EJBs in Wars, Web Profile support, and MDB/Connector model.  In addition to Java EE 8, David has joined the CDI 2.0, JMS 2.1, and Java EE Security JSRs.

David is a regular speaker on Open Source and Java EE at JavaOne, Devoxx BE, Devoxx UK, Devoxx FR, ApacheCon, JavaLand, JAX London, JAXConf, W-JAX, O'Reilly Open Source conference and a JavaOne RockStar. David is also a contributing author to Component-Based Software Engineering: Putting the Pieces Together from Addison Wesley. In his personal blog, David wrote on popular topics such as the Connector Architecture, and Meta-Annotations. Follow him at @dblevins

Java Champions are an exclusive group of passionate Java technologists and community leaders who are community-nominated. Learn more about Java Champions


Geek Bike Ride at JavaOne Brazil 2015

Java developers and JavaOne speakers from around the world arrive ahead of JavaOne to ride together in the streets of São Paulo. Join fellow geeks for a casual, easy, non-competitive bike ride on Sunday, June 21, 2015. 

Come with your bike or rent one. You will receive a limited edition Bike Ride T-shirt. This year the t-shirt will be branded with 20 years of Java. That’s a collector’s item! Register ahead of time for the bike ride!

The following week is JavaOne on June 23 to 25. There is still time to register for the conference and save   

Friday May 29, 2015

Writing JavaFX Applications for Mobile Devices

Due to recent JavaFX ports, you can now create Java client applications that can be deployed on desktop, laptop, and embedded systems, as well as on mobile devices such as smartphones and tablets. In this recent Java Magazine article, Johan Vos explores the state of JavaFX on mobile devices, focusing on the Android platform. 

As Vos explains, like Java, one of the key benefits of JavaFX is the write once, run anywhere paradigm. Thanks to the JavaFX ports for mobile platforms, you can now package your JavaFX applications for deployment on iOS and Android devices. The runtime environments deal with platform-specific issues, enabling you to focus on application-specific needs.

The article walks through the process of creating an Android package based on JavaFX code. It also discusses how to combine Android-specific code and JavaFX code for those situations when you might need to do so.

Also see the website for JavaFXPorts, which is an initiative from the Java Community for coordinating JavaFX porting efforts.

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