By Yolande Poirier-Oracle on Apr 07, 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/
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:
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:
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.
“From now on, JavaLand4Kids is going to be an integral part of the JavaLand Conference. So, this is a call to arms for my friends and speakers” commented Markus Eisele, who is the one of the organizers of JavaLand. Visit his blog for more details. Get in touch with Markus if you want to get involved with the next JavaLand4Kids.
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/
By Guest Blogger Arun Gupta
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.
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.
By Guest Blogger Stephen Chin
JavaLand is a community conference in Germany that is held in an amusement park. Come learn not only about Java and technology, but also about how geeks have fun!
We will have a live NightHacking stream running from the Java Community Area on Tuesday and Wednesday with an all-star interview line-up. Each day will also conclude with an exciting combined vJUG session, which you won’t want to miss!
Schedule (Time Zone is CET)
Java enthusiasts, developers, and architects are gathering next week in Phantasialand, an amusement park close to Cologne, Germany. The conference is a mix of a tradition conference sessions and fun community activities.
In the 20 years of Java keynote, Marcus Lagergren will go down memory lane to reflect on his time on the JVM teams and share his view of the future of Java. Oracle engineers are presented a number of sessions on Java SE 8 and lambdas, Internet of Things and Java EE. Check the schedule.
In the Early Adopters’ area, there will be a hackergarten with 30 minute presentations on development topics, after which interested parties will be able to collaborate on a project.
Participants and Topics