Thanks for the notes Reinier. So Jigsaw wants to take on Maven as well as OSGi. In that case I suppose that the enemy of my enemy is my friend ;-)
On Nov 17, 9:57 am, Reinier Zwitserloot <[email protected]> wrote: > Mark *just* finished talking, so, hot off the presses, my notes from > his keynote presentation at Devoxx 2010: > > # Mark Reinhold at Devoxx '10. > > Start off with a review of java versions, apologies and introspective > on the clusterfail that was the java 7 schedule - you've heard this > before: The setting of Sun broke all planning, and the conclusion is > for 7 to be a less ambitious release without closures, and then work > on getting Java8 out the door as fast as possible after that (the Plan > B stuff we've read about before). > > ## Productivity: > > ### Java7: Diamond Operator: Map<String, String> map = new > HashMap<String, String>(); can now become: > Map<String, String> map = new HashMap<>(); > > [Editor's note: Lombok will one-up this feature on Friday!] > > ### Java7: Automatic Resource Management blocks. You can write: > try (InputStream in = new FileInputStream(src)) { > // read from in > } > > [Editor's note: Lombok has let you do this for over a year now via > @Cleanup]. > > ### Java7: Mention of Project Coin and its features. > > ## Performance: > > Clock rates have topped out, instead CPU speed now comes in the form > of more cores. > > sequential iterator (for loops) on big lists aren't compatible with > massively multicore CPUs. > Functional style iteration (map / filter / zip / etc) are. Review of > what these do. > Lambdas are showcased as a solution, then Defender methods to add map, > filter, etc to the collections APIs:http://twitpic.com/37kxub > > ### long-term plans for java: > > Now Mark talks about Reification. Explains what it is and why it would > be nice. > > Mark then talks about primitives in generics:http://twitpic.com/37ky8w > > And somebody's been learning from Project Lombok: Simple POJOs in > Java:http://twitpic.com/37kyk9 > > ### Talking about DaVinci (Jython on the JVM is often faster than C- > Python, but we can do better with features like InvokeDynamic). No > news I haven't heard before. > > ### Talking about what Project Jigsaw is about. No changes to what > module-info.java looks like:http://twitpic.com/37kz6a. Main goal of > Project Jigsaw is to get rid of '-classpath'. > > Also a mention of how the jar file format is hampering modularization > efforts, so it'll be replaced with jmod, which is a custom format > specifically designed for java modules. Can be converted to rpms/debs, > jars to work with older java versions, etc. > > [Editor's note: This is the first time I remember jigsaw vs. Maven > talk, usually it's jigsaw v. OSGi]. Mark talks about unifying compile- > time module systems like Maven and runtime module systems like OSGi; > they're going to look into making jigsaw do both of those things. > > Showcasing the jmod tool which lets you create, edit, and work with > jmod modules. > > Promises looking into a CPAN-like 'remote repository' feature for > jmod, which would look something like this:http://twitpic.com/37l0pg > > ## JVM Convergence > > Not particularly specific talk about 'HotRocket' - the idea of > integrating JRockit VM and the Hotspot VM. > > Showcasing Mission Control and Flight Recorder, the VM introspection > tools of JRockit. No mention of the 'premium VM' news that was in the > news a week or two ago. Mark never specifically said Mission Control > or Flight Recorder are going to be in OpenJDK or the free Oracle JVM. > > ## Java Plan B: > > Java 7 released Mid2011, then the features planned for Java 7 that > aren't close to done yet, moved out to Java 8, to be released Late > 2012. Mark says he's "pretty confident" about these > dates:http://twitpic.com/37l22c > > Mark shows the Umbrella JSRs for Java7 and Java8 having been submitted > to the JCP earlier today. > > OpenJDK will remain GPL+Classpath Exception. IBM and Apple are going > to contribute to OpenJDK. The OpenJDK governance structure will be > rebooted. Mark expects a MacOS implementation of Java7 available > within a few months of general availability of the Linux and Windows > implementations. > > Release schedule of Java7. Mark again states he's "pretty > confident":http://twitpic.com/37l3fe > > NB: I'll clean this up and post it to my blog later. -- You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
