Sunday May 22, 2016

Java Community Event in Japan

JJUG CCC is the largest Java community event in Japan, held twice a year in spring and autumn. The one day event is organized by the Japan Java User Group and attracted over 1,300 attendees last Saturday. Top speakers presented sessions about all Java technologies in 7 tracks. The event closed with entertaining Ignite sessions including a blind sake tasting competition between NightHacking organizers, Sebastian and Stephen, and the community members. 

Some of the session topics were: 
  • Raspberry Pi with Java
  • Type Annotation for Static Program Analysis
  • Eclipse Collections
  • Jenkins 2.0
  • Introduction to JShell: The Java REPL Tool 
  • Java EE Web Profile
  • Python + GDB = Java
  • OpenJDK 
  • Gradle 
  • Play Framework 
  • Java Puzzlers 
  • Java EE 

Pictures of the event 


Tuesday May 17, 2016

NightHacking Tour in Japan

Java Community Lead Stephen Chin and Freelancer Sebastian Daschner are touring Java User Groups in Japan.  You can watch them live at NightHacking

Stephen walks you through how to build your own retro handheld console that is powered by Java, runs on a Raspberry Pi, and is printed on a 3D printer. Some of the topics he covers along the journey include: hacking Java on the Raspberry Pi
, rigging input devices with Pi4J, insane performance tuning on the JVM
, why your boss needs to buy you a 3D printer!
 And, of course, your retro gaming mettle will be put to the test, so dust off your old 8 and 16 bit consoles! This presentation is about the most fun you can have while still legitimately calling this conference “work.” 

Sebastian gives an introduction of RESTful web services with Hypermedia as the engine of application state, what the benefits and costs of using this approach are and show different approaches how to realize such REST services with JavaEE 7 and JAX-RS. Most of the time will be spent demonstrating different implementations (plain JavaEE 7, existing libraries, etc.) with live coding. The session is held in English. 

Follow them @nighthacking while they are visiting JUGs: 

5/16/2016 Hiroshima JUG
5/17/2016 Osaka JUG
5/19/2016 Sendai JUG
5/20/2016 Sompo Japan Tachikawa
5/21/2016 JJUG Event
5/24/2016 Java Day Tokyo
5/26/2016 Java Kueche (Okinawa)
5/28/2016 JavaDo (Sapporo)

Microservices Hackathon

Create microservices with Java or Node/Javascript in the Cloud. In this free Hackathon event on May 18 in New York City, you'll learn about managed microservices, devops automation, new Java 8 capabilities and get a hands-on introduction to a new Javascript toolkit called JET. 


Learn lightweight microservices development using Java 8, Javascript and cloud devops tools with the latest Java 8 features, JAX-RS via Jersey/Grizzly, Node.js and JET. Get first hand experience with Developer Cloud Service and Application Container Cloud Service (Java SE and Node.js) from Oracle. 

Organizations with highly skilled development teams are looking for agility in delivering custom lightweight applications to their organizations and this Hackathon provides a clear path to using Cloud Native methodologies to create, deploy, manage and maintain microservices written in Java or Node.js.   

Join us Wed, May 18 for a fun, hands-on, informative Hackathon day.  A foundation reference implementation and source code will be provided for a back end Java SE microservice that authenticates to Twitter via OAuth using only Jersey/Grizzly, exposing a real time tweet stream to a front end Node.js instance running the JET Javascript toolkit.

Tuesday May 03, 2016

Java SE 8 Certification

Prepare for the Java SE 8 exam or upgrade your certification from any previous Java SE to Java SE 8.  There are resources available, whether you are getting a certification for the first time or want to upgrade your certification.

Upgrade Java SE 7 to Java SE 8 OCP Programmer | 1Z0-810
Recommended Training: Java SE 8 New Features

Upgrade to Java SE 8 OCP (Java SE 6 and all prior versions) | 1Z0-813
Exam Topics: Upgrade to Java SE 8 OCP (Java SE 6 and all prior versions)

More about Certification:



RetroPi Handheld Java Gaming

Build your own retro handheld console powered by Java, running on a Raspberry Pi, and printed on a 3-D printer. In this video, you will learn how to hack Java on the Raspberry Pi, rig input devices with Pi4J, and tune for insane performance on the JVM. Learn about embedded and Java while having fun! 

Thursday Apr 28, 2016

Tips and Tricks for Better Applications

How to take full advantage of Java EE and Java SE features in your web applications. In this presentation, David Blevins discussed the topic of extensibility with CDI, CDI Scopes and EJB. He explains how to use scopes in CDI, and add your own Bean types. He shows scope samples you can download and basic classes for making your own scopes. In the second part of his presentation, he explains the new Java 8 features and how to leverage them for your Java EE applications. Watch his presentation. 

Tuesday Apr 26, 2016

New Java Champion Pratik Patel

Welcome New Java Champion Pratik Patel

Pratik Patel is a long time Java expert, advocate and community organizer. While working as a graduate student at the University of North Carolina’s SunSITE research lab (which was sponsored by Sun Microsystems), he learned about Java and was immediately hooked by the potential of the platform and the language. That year, in 1996, he co-authored the 2nd book on Java. The following year, he wrote the first book on enterprise Java. He went on to implement large-scale Java based systems in investment banking, health-care and telco in various places in the world including New York, London, and Hong Kong.

Starting in 2005, Pratik became involved with the Atlanta Java User’s Group (AJUG), and later became a board member. His work in bringing the world’s experts on Java technology to Atlanta have helped make DevNexus one of the largest community run Java centric conferences in the world. Around the same time, he started to share his deep knowledge of Java and the JVM to developers in the USA and around the world. He is a frequent speaker at the No Fluff Just Stuff tour and other Java-centric conferences. He also is the primary organizer of DevNexusJr, a venture that is part of AJUG to bring the joy of programming to the next generation of developers. Follow him at @prpatel

The Java Champions are an exclusive group of passionate Java technology and community leaders who are community-nominated and selected under a project sponsored by Oracle. Learn more about Java Champions


Thursday Apr 14, 2016

2016 JavaOne Call for Papers Open


Join the premier Java conference in San Francisco as a speaker. This year JavaOne will take place from September 18th to 22nd, 2016. Speakers on accepted submissions will receive a complimentary pass with access to all conference sessions. Submit a proposal today in one of the conference tracks: 

  • Core Java Platform
  • Emerging Languages
  • Java, Cloud, and Server-Side Development
  • Java and Devices
  • Java Clients and User Interfaces
  • Java Development Tools
  • Java, DevOps, and Methodologies
Make sure to check out the general tips before submitting your proposals General Tips

Wednesday Apr 13, 2016

Humanoid Robot Programming with Java

“The Nao Robot can play soccer and compete for RobotCup with its cameras tracking the ball and field movements” explains Nicolas Rigaud community manager at Aldebaran Robotics. Watch this interview where Nicolas explains the Nao’s hardware. 

Monday Apr 11, 2016

Java Magazine March/April Issue

By Java Magazine Editor Andrew Binstock

Welcome to the March/April issue of Java Magazine in which we dig into the inner workings of Java and the JVM. This issue is pure nerd-stim: bits and bytes have never been as much fun as exploring how the JVM manages garbage collectors and code caches. All good developers are mindful of how their code executes, but due to constant advances in the language and the JVM, knowing what's going on behind the scenes is not always easy.

So, let's dig in. We start by looking into the fundamentals of just-in-time (JIT) compilation in the JVM, we compare the performance of different garbage collectors, and then we update an article on the JVM's code cache and its effects on performance. To these, we add deep dives into how Java itself works: how annotations are handled and how to write your own annotations; plus we examine how the Java Collections Framework was optimized using laziness, which is a technique that is available to you in your code.

The rest of the issue shows off Golo, a new JVM language; better persistence in Java EE; and how enums work in Java--all topped off by our famous language quiz, our no-holds-barred book review, and my editorial, which discusses a new proposal by the Java team to add greater type inference to the language. Enjoy! 

Read this new edition of the Java Magazine


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