java.net Communities

Working with jMaki Events
The latest SDN Enterprise Tech Tips looks at Working with jMaki Events. Author Carla Mott writes, "the following tip expands the discussion of the event mechanism in jMaki. You'll learn more about the concepts that underlie the jMaki event mechanism and how to take advantage of it to easily interact with widgets. "

Kinds of Compatibility: Source, Binary, and Behavioral
What does it mean for changes to be "backwards compatible" with previous versions of Java? Joe Darcy clarifies common misperceptions in the blog Kinds of Compatibility: Source, Binary, and Behavioral. "When evolving the JDK, compatibility concerns are taken very seriously. However, different standards are applied to evolving various aspects of the platform. From a certain point of view, it is true that any observable difference could potentially cause some unknown application to break. [...] Since not making any changes at all is clearly not viable for evolving the platform, changes need to be evaluated against and managed according to a variety of compatibility contracts."

Method Handles in a Nutshell
"One of the biggest puzzles for dynamic language implementors on the JVM, and therefore for the JSR 292 (invokedynamic) Expert Group, is how to represent bits of code as small but composible units of behavior. The JVM makes it easy to compose objects according to fixed APIs, but it is surprisingly hard to do this from the back end of a compiler, when (potentially) each call site is a little different from its neighbors, and none of them match some fixed API." John Rose takes a swing at addressing this problem through a new design for "method handles", which he details in the blog Method Handles in a Nutshell.

Drag & Drop with Rails: The ability to drag and drop has been a staple of desktop applications for years. With the advent of Ajax, the ability to drag and drop has now found its way to web applications. In this entry I spice up the blogging application we've been building with the ability to drag comments to the trash.
bleonard from NetBeans   (April 18, 2008 11:45:27 AM PST)

Jersey 0.7 released...with a tiny taste of Grizzly Comet Support: Last week, before unleashing the Grizzly at ApacheConf 2008, I've traveled to Grenoble to see if we can force a Comet to REST....
jfarcand from Java Enterprise   (April 18, 2008 10:31:15 AM PST)

Introduction to jVoiceBridge:
yvobogers from Java Communications   (April 18, 2008 01:33:07 AM PST)

From the Trenches at Sun Identity, Part 3: Federated Access Management Simplified
The SDN article From the Trenches at Sun Identity, Part 3: Federated Access Management Simplified is the latest in a series involving OpenDS and OpenSSO. In this installment, Sun senior product line manager Daniel Raskin discusses the background for merging two of Sun's access and federation management products and the new capabilities that focus on simplicity, ease of use, efficiency, and convenience.

Pulsar project
The Pulsar project is a Java-based peer-to-peer streaming client that allows the distribution of audio and video in the Internet, both live and on-demand. As viewers help forward the content, there is no need for strong servers. With the release of version 0.6 Pulsar has now become open-source and is hosted on java.net. Various subprojects, like the media player or its peer-to-peer protocols also work independently from Pulsar and can be reused for other projects.

Overview of GlassFish Unconference and CommunityOne
Eduardo Pelegri-Llopart has posted an Overview of GlassFish Unconference and CommunityOne on The Aquarium. "I've updated the GlassFish Event Page with the latest information on the 2008 GlassFish Unconference and CommunityOne. I have linked to 18 sessions related to GlassFish, covering AppServer, MQ, Portal, Social Software, ESB, FAM, Scripting, Persistence and Web Tier. Some of the sessions are in the GF "track", others are listed elsewhere. This means you can't be in all the sessions you likely want to attend, so bring a friend and compare notes. CommunityOne is free but space is limited. Register Now to save your place."

Substance 4.3 released
The Substance project has released version 4.3 of the popular look-and-feel. New features include "decoration painters", "highlight painters", better layout of menus and menu items, autoscrolling, initial support for very large fonts, tab close button usability improvements, and more. Kirill Grouchnikov has further details and screenshots in his blog.

Java ME "Hello World" on iPhone
Hinkmond Wong has posted a blog apparently showing Java ME running on the iPhone SDK. Along with a screenshot of the iPhone emulator showing a Java ME version string and "Hello World" output, he writes, "Here's something I'm working on with Chris Plummer and Dean Long for JavaOne this year. Chris recently was able to build our Java ME CDC/Foundation Profile platform on Darwin OS x86 (hmmm... Darwin OS... I wonder what that means... ;-) ) last weekend. (I think he started on Friday afternoon and was ready with it on Saturday). Faster than you can say, "Java ME rules!""

Survey: Is NetBeans IDE 6.1 Ready for FCS?
NetBeans 6.1 Release Candidate 1 has been published, and NetBeans.org has posted a Community Acceptance Survey, available to registered netbeans.org users. "The purpose of this survey is to find out if the NetBeans community deems NetBeans 6.1 RC1 as ready for FCS--or not. Thus we are asking everyone who has used RC1 and has developed a solid opinion about it to login to netbeans.org and take the short survey, which will be available until Wednesday 4/16 midnight in the last time zone."

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