Recent Posts by Joe Darcy

Update: A video of this talk is now available on Parley's. Earlier today, I presented my JavaOne session on The Heads and Tails of Project Coin (slides). The talk included some retrospectives from developing the Coin features which I hope to write up in more detail in the near future. Turning toward the future, the talk also spent a little time discussing possible language changes coming in JDK 8. First, planning for JDK 8 is on-going and the feature list is subject to change;...

Calling out some statistics I put together for OSCON, I think it is interesting to examine the cumulative number of monthly changesets in the JDK 7 forest from the time of the transition to Mercurial to JDK 7 GA: This graph covers roughly three and a half years of the project's history, with the purple lines being time under Sun and the red lines being time under Oracle. The blue line is a scaling of the number of changesets per month, roughly the first derivative of the...

While enjoying some post-JDK 7 GA rest and relaxation, a hotel I stayed at offered this different image of JavaOne, one cup at a time: In the meantime, the usual JavaOne 2011 conference is fast approaching! My talk on The Heads and Tails Project Coin is just over a month away on Tuesday, October 4. Later that day, I'll be available for questions at the Meet the Java Language Team bof.If you already have a question you want answered about Project Coin at or before JavaOne,...

With JDK 7 out the door, many writeups of the release have naturally focused on its larger features like Project Coin, NIO.2, the fork/join framework, and invokedynamic. However, there are a number of small but useful library conveniences in JDK 7 that shouldn't be overlooked. Library changes I think are handy include: To allow more informative assertion errors to be constructed, AssertionError now includes a constructor taking a string message and a Throwable cause, which...

While JSR 348 is working on making changes to the JCP process JSRs pass through, for those working on or following JSRs understanding the state transitions of the current process, JCP 2.7, is helpful. As shown below, after an approval ballot to initiate the JSR, the expert group convenes and produces a series of draft specifications, currently an early draft, followed by a public review draft, a proposed final draft, and the final specification.If needed, an expert group can...

After a short keynote on JDK 7, later in the day on Monday I presented a talk about The State of JDK and OpenJDK; the slides for the talk are now available.

Update: The slides. If all goes according to plan, at 10 am PST on Monday, July 25 I'll be giving a keynote talk about JDK 7 in a Nutshell at OSCON Java in Portland and the talk is slated to be streamed live. After the keynote, I'll post the slides.

Slightly more than eight months after its JSR review ballot was first filed, JSR 334 has just successfully passed its final approval ballot. Along with the other portions of the Java SE 7 umbrella JSR, the language changes done under JSR 334 are now officially part of the Java SE platform, the first Java programming language changes since JDK 5 shipped way back in 2004. Thanks go to the members of the JSR 334 expert group for their service, to the langtools team at Sun and...

Update: Video now available from the Project Coin link on this page. Somewhat before the scheduled GA at the end of the month, today at Oracle headquarters and elsewhere we celebrated the launch of JDK 7. The webcasts of my half-hour breakout session on Project Coin and three other technical breakouts will be available for replay later. In the meantime, I've posted the slides. One comment I made during the session made an impression on twitter: after a glitch going back from...