Wednesday Apr 15, 2015

How to Contribute to the Java Platform

In this interview, Heather Van Cura gave an update about JCP. She mentioned new JSRs for Java EE 8, and Java SE 9, and discussed changed to JCP.next

Community members Simon Maples, Mani Sarkar, and Daniel Bryant pesented a vJUG session about the Adopt OpenJDK project. They describe how to contribute to OpenJDK project. Mani presented a hands-on demo on how to contribute to Java 9  Learn more

Tuesday Apr 14, 2015

Perspectives on Docker

Want to know why and how to use Docker? Docker is a popular tool to build and deploy applications across environments. In these three interviews, you will learn about the benefits of Docker, its integration with other tools, and teams using the tool for different applications.

Jfrog CTO and co-founder Yoav Landman explains the use of Docker with Chef, and Vagrant in the development of a Bintray application. 


Conference speaker Matthias Grüter explains why Docker works well with the JVM 


Conference speaker Roland Huss discusses the benefits of integration tests. 


Monday Apr 13, 2015

Devoxx France 2015 Explores The Future of Technology

2500 developers attended 4th Devoxx France this year, an increase of over a thousand attendees from last year. The organizers announced a new member of the Devoxx family: Devoxx Morocco, a conference that will take place in Casablanca during the third week of November.

In this 20th year of Java, the theme of Devoxx France 2015 was about innovations in technology over the next 20 years. In his keynote, Java architect Brian Goetz described a development approach that keeps up with the technical needs of developers. Java 9 will deliver a modular platform tuned to hardware requirements. CEO Quentin Adam of Clever Cloud considers that engineering roles are entering an age of specialization. Dan Allen, an open source advocate, author, and world renowned speaker, discussed the responsibility of developers to preserve digital information for future generations. CCO Stephan Tual discussed Ehereum, an open source and decentralized platform allowing the creation of P2P businesses with new infrastructure, communication and privacy.

Rodolphe Gelin, research director of Aldebaran, explains that Romeo, a new line of humanoid robots will become a companion capable of understanding emotions and anticipate situations in the every day life. “Robots are an additional platform for development” he commented. Pierre Yves Oudeyer, research director at INRA, discussed cutting-edge artificial intelligence research, in which robots are programmed to be curious and learn by experimenting like children. They become aware of themselves and their environment. They can even develop their own language. The humanoid robot Poppy is an open source robot for laboratories and research centers to collaborate on the artificial intelligence project. Eric Filiol, the head of ESIEA research lab called on developers’ civic responsibility to educate politicians who are passing laws about internet, and privacy without understanding technology. He made the room laugh when he suggested that “after Devoxx4Kids, we really need a Devoxx4politicians.”

All the keynote speakers agreed that no one can predict the disruptive technologies in the next 20 years like no one could have predicted the internet and its ubiquity in our lives today. Again this year was Seed Networking, where developers, startups and venture capitalists discuss business opportunities. New this year was the Café Philo to discuss about the digital world and the future of society. Devoxx4kids took place last Saturday. 50 kids were learning Java using Scratch and Lego Mindstorms.

Thursday Apr 09, 2015

Devoxx France and 20 years of Java

In this interview, Antonio Antonio Goncalves talks about the 4th edition of Devoxx France. The keynote speakers this year discusses the next 20 years of Java 

Tuesday Apr 07, 2015

Devoxx France 2015

Taking place this week April 8 to 10 in Paris is Devoxx France, one of five Java developer conferences in Europe. The conference is in English and French and all the sessions will be available on Parleys website a couple of weeks after the conference. 

This year, Oracle is a Platinum sponsor. Check out the Oracle Java sessions:  

Java Mission Control for Earthlings
April 9, 15:10 - 16:00
James Weaver, Consulting Member of Technical Staff, Oracle

Java 9 Plan
April 9, 16:35 – 17:25
Brian Goetz, Java Language Architect, Oracle
Paul Sandoz, Software Developer, Oracle

Java EE 7 Batch Processing in the Real World
April 9, 17:40 - 18:30, Neuilly 252 AB
David Delabassee, Software Evangelist, Oracle

Java 8 EE, A Snapshot Overview
April 9, 17:40 - 18:30, Neuilly 252 AB
David Delabassee, Software Evangelist, Oracle

Java EE Birds of Feather Session
April 9, 20:30 – 21:30, Neuilly 252 AB
David Delabassee, Software Evangelist, Oracle

Domotique et Java, Birds of Feather Session
April 9, 21:30 – 22:30, Paris 202-203 Lab
David Delabassee, Software Evangelist, Oracle

Batch API (JSR 352) Hands-on Lab
April 10, 11:00 – 13:50, Paris 224M-225M Lab
David Delabassee, Software Evangelist, Oracle

Project Jigsaw
April 10, 14:05 – 14:55, Maillot
Paul Sandoz, Software Developer, Oracle

IoT, Java, and Autonomous Drones
April 10, 14:05 – 14:55, Room: Amphi Bleu
James Weaver, Consulting Member of Technical Staff, Oracle

Finally, Security API JSR 375
April 10, 15:10 – 16:00, Room: Paris 241
Alex Kosowski, Principal Member of Technical Staff. Oracle

If you attend the conference, please swing by booth #P04 and chat with Java experts who will be onsite answering questions.

Java Day Tokyo 2015

by Guest Blogger Stephen Chin

Java Day Tokyo is the largest Java conference in Asia with a very long history of supporting the local Java community. We will be live streaming interviews from the conference with noteworthy Java community speakers from Japan. Join the live stream at: http://nighthacking.com/

Java Day Tokyo はアジア地域の中で最も大きなカンファレンスです。今回、日本から Java コミュニティの著名な方々をお招きし会場からインタビューの生ストリーミング配信を行います。ストリーミングはこちらからご覧いただけます。
http://nighthacking.com/

Thursday Apr 02, 2015

Updates to the Java Troubleshooting Guide

By Guest Blogger Poonam

Crossed post from: https://blogs.oracle.com/poonam/entry/updates_to_the_java_troubleshooting 

Mattis Castegren who is my manager at Oracle, and is the guest writer for this blog post would like to share some details on the Java Troubleshooting Guide. Here's what he has to say:--

With the release of JDK 8, the official Java Troubleshooting Guide got a big overhaul. All pages were looked over and updated for JDK 8, and the two previous guides for the JVM and for Desktop Technologies were merged into one.

In the last month, with the release of 8u40, we have launched the next phase in this project. In this phase, we have added a lot of chapters about the new supportability tools that have been introduced in Java over the last few years.

The biggest new additions are a set of pages on how to use the Java Flight Recorder (JFR). If you haven't used JFR before, you should definitely check out the following chapters:

2.3 What are Java Flight Recordings

2.4 How to Produce a Flight Recording

2.5 Inspect a Flight Recording

These chapters contain step by step instructions on how to record a JFR and also goes through what to look for in a recording to find common issues. The chapters contain lots of screen shots and details on how to interpret the data.

Once you have learned the basics, you can also look at the following two chapters on how to use JFR to debug specific issues:

3.1 Debug a Memory Leak Using Java Flight Recorder

4 Troubleshoot Performance Issues Using JFR

When you have read through these chapters, you will be ready to use this great tool to find bottle necks in your own application.

Other new additions to the troubleshooting guide is a new chapter on how to set up Java for better troubleshooting: Prepare Java for Troubleshooting, as well as a lot of minor updates and clarifications.


Monday Mar 30, 2015

New Java Champion Martin Thompson

Congratulations to the new Java Champion Martin Thompson 

Martin is a consultant, trainer, and coach specializing in designing high-performance and low-latency systems. In the performance space, he has changed expectations about what is possible with Java by showing that Java can compete with and even outperform native applications. His passions include concurrent programming (the Disruptor being one of his creations) and teaching people how to write algorithms that best utilize modern hardware. He started the Mechanical Sympathy blog and forum, a popular forum of high-performance systems to get guidance for understanding the implications of running their code on modern hardware and for producing code that works in harmony with hardware to be significantly more efficient and robust. Follow Martin on Twitter @mjpt777

Martin is a very active open source contributor. He wrote the initial release of LMAX  Disruptor, an inter thread event processing framework, which won the Duke Choice Award. He also contributed to Aeron, a high throughput, and low latency message transport, surpass native C/C++ implementations by the top commercial vendors in the financial trading space. He contributed to SBE, a message codec that is typically 20X faster than Google Protobufs. 

Martin is a frequent presenter at global conferences. His techniques in high-performance application development have become a standard in every low latency industry and have influenced millions in finance, gaming, and everywhere that high-performance is required.

Monday Mar 23, 2015

Two Live Streaming Java Sessions from vJUG

The vJUG, a virtual Java user group, presents live streaming technical sessions about topics related to Java, JVM, Java EE, Internet of Things and more. Organized by Mani Sarkar and Simon Maple from the London Java Community, their aim is to get the greatest minds and speakers of the Java industry to give talks and presentations in the form of webinars and live streaming from JUG meetups.

First session: How is Java/JVM built?  Tuesday, March 24, 2015 at 14:45 UTC, 15:45 in Germany, 10:45am in New York, 7:45am in San Francisco, and 22:45 in Beijing

Mani Sarkar and Daniel Bryant will give an overview of the Adopt OpenJDK program. They’ll explain why developers should get involved, how to participate, and how front-end developers can take advantage of the Adopt OpenJDK. Watch the session live at http://nighthacking.com/event/javaland-2015/

Second session: What's coming in Java.Next? Wednesday, March 25, 2015 at 14:45 UTC, 15:45 in Germany, 10:45am in New York, 7:45am in San Francisco, and 22:45 in Beijing

Learn from Heather VanCura how you can take part in Java technology by Adopting a JSR. This session give a brief overview of the Adopt-a-JSR program. Andres Almiray will discuss JSR 377, Desktop|Embedded Application API; Anatole Tresch will discuss JSR 354, Money & Currency API; and Ed Burns will discuss the two JSRs he is currently leading, JSR 369, Java Servlet 4.0 Specification and JSR 372, JavaServer Faces (JSF 2.3) Specification.

Two sessions are scheduled for next week. They are live from the JavaLand Conference in Germany, in partnership with the Nighthacking community.  You can watch them online at http://nighthacking.com/event/javaland-2015/  

Sunday Mar 22, 2015

Minecraft Modding Course at Elementary School - Teach Java to Kids

By Guest Blogger Arun Gupta

Cross posted from weblogs.java.net/blog/arungupta/archive/2015/03/22/minecraft-modding-course-elementary-school-teach-java-kids

Exactly two years ago, I wrote a blog on Introducing Kids to Java Programming using Minecraft. Since then, Devoxx4Kids has delivered numerous Minecraft Modding workshops all around the world. The workshop material is all publicly accessible at bit.ly/d4k-minecraft. In these workshops, we teach attendees, typically 8 - 16 years of age, how to create Minecraft Mods. Given the excitement around Minecraft in this age range, these workshops are typically sold out very quickly.

One of the parents from our workshops in the San Francisco Bay Area asked us to deliver a 8-week course on Minecraft modding at their local public school. As an athlete, I'm always looking for new challenges and break the rhythm. This felt like a good option, and so the game was on!

My son has been playing the game, and modding, for quite some time and helped me create the mods easily. We've also finished authoring our upcoming O'Reilly book on Minecraft Modding using Forge so had a decent idea on what needs to be done for these workshops.

Minecraft Modding Workshop Material

All the workshop material is available at bit.ly/d4k-minecraft.

Getting Started with Minecraft Modding using Forge shows the basic installation steps.

These classes were taught from 7:30am - 7:45am, before start of the school. Given the nature of workshop, the enthusiasm and concentration in the kids was just amazing.


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