Requirements of a Standard Java Module System

by Alex Blewitt on  May 26, 2011 2

Yesterday, Mark Reinhold posted the first public draft of the future of modularity in Java. As it is a draft, there are a handful of issues that still need to be agreed on - but it represents the consensus of what modularity in Java should look like. And with IBM being involved, there's more emphasis on interoperability with OSGi than there has been in the past.

Bundle.update: OSGi in Java EE, JSR 294 Marked Inactive

by Alex Blewitt on  Dec 11, 2009 1

Since the last bundle.update, a number of interesting events have occurred in the OSGi and modular Java space. JSR 294 has been (automatically) marked as inactive, the Enterprise Expert Group has released draft 4, WebSphere will allow direct running of OSGi applications and upcoming OSGi conferences have early bird discounts and call for speakers finishing soon.

Bundle.update: the Current State of OSGi

by Alex Blewitt on  Oct 16, 2009 3

It's been a month since OSGi 4.2 was released. What's been happening in the OSGi space since then?

Can the Simple Module System save JSR294?

by Alex Blewitt on  Aug 20, 2009 9

Over the past month there has been a lot of debate on the current state of the Java Modularity working group (JSR 294). Although the JSR tries to find common ground between different module systems (notably Sun's Project Jigsaw and OSGi), the current set of proposals are overly complex and introduce the world's first concept of a meta-module system. Can the Simple Module System save JSR294?

OSGi: The Next Release

by Alex Blewitt on  Jul 17, 2009 2

Peter Kriens, technical director of the OSGi alliance, gave a presentation on the upcoming OSGi 4.2 release at the UK OSGi Users Group. The event was recorded, and the video is now available. OSGi 4.2 is expected to be released to the public by the end of August 2009 and includes a number of new features.

Jigsaw Falling Into Place

by Charles Humble on  Jun 24, 2009 4

Long plagued by controversy, Sun's attempts to modularise the Java platform saw more positive reactions from the JavaOne crowd.

Article: Java 7 Module System Concerns

by Dio Synodinos on  Jan 29, 2009

In this article, Lukas Krecan, introduces the reader with some basic concepts of modularization, gives a roundup of some Java module systems and deals with how Project Jigsaw is connected to the upcoming Java 7.

Jigsaw - the death knell of JSR277?

by Alex Blewitt on  Dec 03, 2008

Following up from an earlier post about modularising the JDK (which InfoQ covered earlier), Mark Reinhold posted the announcement of Project Jigsaw as part of the OpenJDK. Is this the death of JSR277?

Are JSR277 and OSGi coming together?

by Alex Blewitt on  May 19, 2008

Last month we asked whether Sun were listening about OSGi; at JavaOne, it was clear that many others have. Not only are all of the main J2EE engines now OSGi-enabled, but Spring launched their OSGi-based Spring Source Application Platform. Fortunately, a number of positive changes have occurred behind the scenes with JSR277; read on for what's been happening.

Java Modularity Proposal: iJAM

by Geoffrey Wiseman on  Oct 10, 2007 3

A new proposal, iJAM, has circulated on the JSR-294 and modules-dev mailing lists suggesting some changes to the logic supplied in the strawman proposal for JSR-294 'superpackages' and receiving some positive feedback.

Interview: Peter Kriens discusses OSGi

by Ryan Slobojan on  Sep 26, 2007 1

OSGi is a Java modular development specification. OSGi is used in a wide variety of applications, from mobile phones to enterprise servers and the Eclipse IDE. In this interview, Peter Kriens explains where OSGi came from, what sorts of applications it's useful for, integration with Spring, the JSR 277/294 debate, and the future of OSGi.

OpenJDK Project Releases Java Module System (JSR 277) and Improved Modularity (JSR 294) EA Snapshot

by Xandy Johnson on  Jul 05, 2007

The OpenJDK project has released early an access snapshot of the Java Module System (JSR 277) and Improved Modularity Support (JSR 294). JSR 277 addresses modularity from a deployment unit perspective. JSR 294 addresses modularity from a development perspective, introducing a new language construct, called superpackages, for information hiding.

Update on Java Modules

by Rob Thornton on  Mar 14, 2007 2

Glyn Normington has written an overview of Java modularity covering JSR 277, JSR 291 and JSR 294. He describes how each is different and adds value, and later responds to the question of why we need modularity support in the JVM, as opposed to custom classloaders (like OSGi).

Java Module System (JSR 277) Presentation from Spec Lead Stanley Ho

by Scott Delap on  Feb 02, 2007 2

The BeJUG website recently released a presentation on the Java Module System (JSR 277) by spec lead Stanley Ho. The presentation covers the driving forces for JSR 277 such as classpath and jar hell. The online presentation also includes over five minutes of QA time after the presentation.

JSR 291 (OSGi R4.1) Available for Public Review

by Scott Delap on  Dec 13, 2006 10

JSR 291 Available for Public Review JSR 291 has been made available for public review. JSR 291 is also known as OSGi core spec R4.1.