<Insert Picture Here> OpenJDK - When And How To Contribute To The Java SE Reference Implementation OSCON 2011, July 26th, 2011

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2 <Insert Picture Here> OpenJDK - When And How To Contribute To The Java SE Reference Implementation OSCON 2011, July 26th, 2011 Dalibor Topić Java F/OSS Ambassador

3 The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle. 3

4 Agenda Introduction OpenJDK At Oracle: One Year On Community Participation Getting Involved: Writing And Reviewing Code Getting Involved: Testing And Providing Feedback Ongoing Infrastructure Improvements 4

5 OpenJDK Website: OpenJDK.java.net The place to collaborate on an open-source implementation of the Java Platform, Standard Edition, and related projects. 5

6 Early Days Historical background Started by Sun Microsystems 2006: Initial open source release (javac, HotSpot) 2007: JDK 7 Project created in OpenJDK : Ideas, Code, Committers, Projects, Milestones 6

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21 OpenJDK Community Bylaws - Preamble The OpenJDK Community is an association of developers who collaborate upon open-source implementations of present and future versions of the Java Platform, Standard Edition, as defined by the Java Community Process, and upon closely-related projects. The goal of these Bylaws is to foster the long-term health and growth of the Community by enabling and encouraging its members to act in an open, transparent, and meritocratic manner. 21

22 OpenJDK Community Bylaws - Structure The OpenJDK Community is structured as a set of Groups, which are collections of individuals who engage in open conversation about a common interest, and a set of Projects, which are collaborative efforts to produce specific artifacts. There are Community-wide general roles as well as roles specific to Groups and to Projects. 22

23 OpenJDK Community Bylaws - Governing Board The Governing Board manages the structure and operation of the Community, monitoring its health relative to the principles set forth in the Preamble. It upholds and maintains these Bylaws, resolves procedural disputes, and ensures that sufficient infrastructure is available. The Governing Board has no direct authority over technical or release decisions. 23

24 OpenJDK Community Bylaws - Governing Board The current members of the Governing Board are: Adam Messinger (Chair, Oracle), Jason Gartner (Vice Chair, IBM), Mark Reinhold (OpenJDK Lead, Oracle), Prof. Doug Lea (At-Large, SUNY Oswego), and Mike Milinkovich (At-Large, Eclipse). At-Large members serve for a term of one calendar year. After the first year they will be nominated and elected by a democratic process open to all key members of the Community. 24

25 OpenJDK Community Bylaws - General Roles Participant: an individual who has subscribed to one or more OpenJDK mailing lists. Contributor: a Participant who has signed the Oracle Contributor Agreement (OCA) OpenJDK Member: a Contributor who has demonstrated a history of significant contributions OpenJDK Lead: an OpenJDK Member, appointed by Oracle, who directs the major efforts of the Community, which are new implementations of the Java SE Platform known as JDK Release Projects. 25

26 OpenJDK Community Bylaws - Group Roles Group Member: a Contributor who has demonstrated a history of significant contributions to a Group Group Lead: a Member of a Group and an OpenJDK Member who is responsible for directing and coordinating that Group s activities 26

27 OpenJDK Community Bylaws - Project Roles Author: a Contributor who has been granted the right to create changesets intended to be pushed into a specific Project s code repositories, but does not have the right to push such changesets directly. Committer: an Author who has been granted direct push access to the Project s code repositories. Reviewer: an experienced Committer who has the authority to approve changesets destined for code repositories designated by the Project Lead as requiring formal change review. Project Lead: a Committer to that Project who is responsible for directing and coordinating the Project s activities. 27

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30 OpenJDK At Oracle: One Year On Clear commitment from Oracle Roadmap for releases in 2011 and 2012 JVM strategy for HotSpot & JRockit Increased industry participation Increased transparency of development process Moving the Java SE platform forward again Rebooted governance Retooling infrastructure 30

31 Community Participation > 70 devs with > 10 changesets in past year > 100 devs with > 5 changesets in past 2 years > 150 devs with > 2 changesets in past 3 years > 180 devs with > 1 changeset in past 4 years Across more then two dozen Projects Like JDK 7, Lambda, Jigsaw, Mac OS X port & more > 90k mail messages across the Projects since start > 3k mail messages across the Projects in May

32 Contributing To OpenJDK How does it work? Who does it? Companies like Oracle Academics Individual developers 32

33 Contributing To OpenJDK Duke is thinking about becoming a contributor Contributors have to sign a contributor agreement Like in many other open-source communities OpenJDK uses Oracle Contributor Agreement 33

34 Contributing To OpenJDK Duke is looking for something interesting to work on Find an interesting bug or RFE from the bug database Or join an OpenJDK Project's mailing list and offer to help 34

35 Notable OpenJDK Community Projects OpenJDK 6 JDK 7 Project Coin Da Vinci VM Porting Project Zero BSD Port Mac OS X Port Planned JDK 8 Features Project Lambda Project Jigsaw and more 35

36 Contributing To OpenJDK Duke would like to contribute a bug fix Discuss the intended change on the mailing list If it's a good idea, then submit a patch with regression tests Then work with the sponsor to get it polished and accepted Know what to expect working on the JDK is not simple The goal is not to take in the maximum number of contributions possible, but rather to accept only the highestquality contributions. 36

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38 Providing Feedback I have a comment on a feature in development Mailing list of the OpenJDK Project implementing the feature Example: You decide to try a Project Lambda prototype Please provide feedback to lambda-dev mailing list I have found a bug in OpenJDK 6 on my Linux distro Please file it in your Linux distro's bug tracker I have an idea for a feature in JDK 8 (or later) Submit a draft JDK Enhancement Proposal Something else? Ask on the discuss@openjdk.java.net mailing list for pointers 38

39 Ongoing Infrastructure Improvements Bug tracker Code Review System Build Infrastructure Changes JDK 7 Updates Project JDK 8 Development Process JDK 8 Repository Layout 39

40 Keeping Up To Date With Development JavaOne 2011 Oracle Technology Network Java Magazine OpenJDK News blog & Twitter feed Java Spotlight Podcast PlanetJDK.org blog aggregator Mailing Lists on mail.openjdk.java.net Code Mercurial repository at hg.openjdk.java.net hg.openjdk.java.net/jdk8/jdk8 : Mercurial forest for JDK 8 40

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