Some day I will make it to Devoxx – for now, I’m content to
vicariously follow the blogs of attendees and pick up on what’s
happening. I’ve been doing more blog "fishing," looking
for the best commentary on 2011 Devoxx. There’s plenty of food for
thought – and the ideas are not half-baked.
The bloggers are
out in full, offering useful summaries and commentary on Devoxx
Constantin Partac, a Java
developer and a member of Transylvania JUG, a community from
Cluj-Napoca/Romania, offers an excellent summary of the Devoxx keynotes.
Here’s a sample:
“Oracle Opening Keynote and JDK 7,
8, and 9 Presentation
• Oracle is committed to
Java and wants to provide support for it on any device.
• JSE 7 for Mac will be released next week.
• Oracle would like Java developers to be involved
in JCP, to adopt a JSR and to attend local JUG meetings.
• JEE 7 will be released next year.
• JEE 7 is focused on cloud integration, some of the
features are already implemented in glassfish 4 development branch.
• JSE 8 will be release in summer of 2013 due to
“enterprise community request” as they can not keep the pace with an
18 month release cycle.
main features included in JSE8 are lambda support, project Jigsaw, new
Date/Time API, project Coin++ and adding support for
JSE 9 probably will focus on
some of these features:
1. self tuning JVM
2. improved native language integration
3. processing enhancement for big data
4. reification (adding runtime class type info for
5. unification of primitive and
corresponding object classes
protocol in order to use type and methods define in other JVM
JVM resource management”
Ivanov, of SAP Labs Bulgaria, also commented on the keynotes with a different
focus. He summarizes Henrik Stahl’s look ahead to Java SE 8 and
JavaFX 3.0; Cameron Purdy on Java EE and the cloud; celebrated Java
Champion Josh Bloch on what’s good and bad about Java; Mark Reinhold’s
quick look ahead to Java SE 9; and Brian Goetz on lambdas and default
methods in Java SE 8.
Here’s St. Ivanov’s account of Josh
Bloch’s comments on the pluses of Java:
“He started with the
virtues of the platform. To name a few:
Tightly specified language primitives and evaluation order – int is
always 32 bits and operations are executed always from left to
right, without compilers messing around
linking – when you change a class, you need to recompile and rebuild
just the jar that has it and not the whole application
Syntax similarity with C/C++ – most existing
developers at that time felt like at home
orientations – it was cool at that time as well as functional
programming is today
It was statically typed
language – helps in faster runtime, better IDE support, etc.
No operator overloading – well, I’m not sure why it
is good. Scala has it for example and that’s why it is far better for
defining DSLs. But I will not argue with Josh.”
checking out St. Ivanov’s summary of Bloch’s views on what’s not so
great about Java as well.
What's Coming in JAX-RS
Marek Potociar, Principal
Software Engineer at Oracle and currently specification lead of Java EE
RESTful web services API (JAX-RS), blogged on his talk about what's coming in JAX-RS
2.0, scheduled for final release in mid-2012.
“Perhaps the most wanted addition to the JAX-RS is the
Client API, that would complete the JAX-RS story, that is currently
server-side only. In JAX-RS 2.0 we are adding a completely
interface-based and fluent client API that blends nicely in with the
existing fluent response builder pattern on the server-side. When we
started with the client API, the first proposal contained around 30
classes. Thanks to the feedback from our Expert Group we managed to
reduce the number of API classes to 14 (2 of them being exceptions)! The
resulting is compact while at the same time we still managed to create
an API that reflects the method invocation context flow (e.g. once you
decide on the target URI and start setting headers on the request, your
IDE will not try to offer you a URI setter in the code completion). This
is a subtle but very important usability aspect of an API…”
Obviously, Devoxx is a great Java conference, one that is hitting this
year at a time when much is brewing in the platform and beginning to be