It's clear that JavaOne is just the "side conference" this year - it had to leave its home in the Moscone center, which is mainly hosting Oracle OpenWorld. With the move, things got slightly smaller - session rooms (which is probably the most annoying aspect), the chill-out zones and exhibition space, ... . But of course it's not the size that matters; it's the content that compensates for it! The quality of the talks, we've seen, has been very good so far, and as usual it's a lot of great ideas, visions and news floating around. Below we give you a quick summary of the latest Java news and session highlights:
KeynotesOn Sunday evening Larry Ellison hosted the opening session of the Oracle OpenWorld. First of all most of the JavaOne attendees were rather surprised, they were not allowed to join in for this keynote. Nevertheless a quick update on this keynote is provided here before moving on with the real Java stuff.
The first presentation was the Oracle Exalogic Elastic Cloud, which is very briefly summarized “The Cloud in a Box”. The Exalogic box provides both hardware and software. Oracle further announced benefits to the customer due to the homogeneous hardware and software, which is also reflected in Oracle's new tag line "Hardware and Software Engineered to Work Together". Exalogic combines up to 30 servers, including storage (hard disk drive and SSD) and a high-speed internal network between the servers in a rack. The Exalogic solution is designed and optimized to run Enterprise Java applications, i.e. the Oracle Fusion Middleware stack, similar to the Oracle Exadata center which runs Oracle DB servers. Oracle Exalogic can be scaled from 1/4 up to 8 racks, whereas according to Larry Ellison two full racks were enough to host all of Facebook.com.
Afterwards the Unbreakable Enterprise Kernel was presented, which will be 100% RedHat compatible. It is Oracle’s answer to the slowly moving RedHat distribution; according to Larry Ellison RedHat is 4 years behind the mainline.
Finally Oracle Fusion Application was unveiled. It is a CRM/ERP/HRMS system which offers the features of products earlier acquired by Oracle such as PeopleSoft and Siebel. The entire code basis has been re-written based on Oracle Fusion Middleware, which had to be enhanced to support all the middleware functionality needed. It took Oracle five years to develop Oracle Fusion Applications and is one of the biggest projects Oracle ever faced.
On Monday and Tuesday the JavaOne Opening Keynote and the General Technical Session were about the Future of Java, which is the right thing to do after the Sun/Oracle merger last year. After finalizing the Java EE 6 Specification in December 2009, this year the focus is moved to the next version of the Java Standard Edition (Java SE). The last update on the Standard Edition was Java SE 6 in 2006. After a five years break we will get two new versions within roughly 18 months, OpenJDK 7 in mid 2011 and OpenJDK 8 in late 2012.
Java SE version 7 contains a bunch of smaller language changes and enhancements. Project Coin contributes most of the new language features, such as Diamond Operator for declaration and instantiation of generics, Try-with-Resource block for proper closing of resources implementing the new
AutoCloseableinterface in the
java.langpackage, Mutli-Catch and Re-Throw of Exceptions, Switch statements with Strings and String literals using “_” (int a = 0b100_1010_0011;). Additionally JSR 292 is implemented in this release, which supports mainly other languages setting up on top of the JVM, such as Scala and Groovy. The Fork/Join Framework provides better support for modern multi core processors. There are some other updates shipped with this release such as JDBC 4.1, which supports resource management, and more.
Java SE version 8 will bring a new modularization concept, finally no more hassle with the JAR files and the classpath! Project Jigsaw is defining these new features. A module (
*.jmod) contains all its classfiles and a declaration of modules it depends on. This declaration is placed in the module-info.java file, which contains the name and the version of the dependencies. Modules need to be installed on the target system before they can be executed. A second set of major improvements will come out of the Project Lambda. These improvements include closures, value classes - no need to write getters and setters, extension methods and eventually reification.
On the tooling side two new versions of Netbeans IDE will be released during 2011 (check the feature list). Project Glassfish also committed to publish two new releases during calendar year 2011 (check the feature list).
Not surprisingly, hot topics like the lawsuit with Google or the future of the JCP were not discussed.
In Hyperproductive JSF 2.0, JSF co-spec lead Ed Burns showed a couple of reasons why your project development might run with hand brake pulled. With several demos he showed probably underused new features in JSF 2 like Groovy support for all JSF artifacts that get hot deployed, or the new facelets >ui:debug< tag that gives you information on the component trees or scope variables. He also emphasised the importance of standards or conventions for a team, which is indeed an often overlooked aspect when a new project needs to get out quickly. This was supplemented by another talk on the new JSF 2 composite components, which make it very easy to create reusable components for e.g. your corporate layout and build up a highly productive framework like that.
While Maven founder Jason van Zyl's talk on Maven 3 was not intended to show new Maven features, he gave an overview of how he envisions future enterprise development. This includes tight integration from IDE over SCM to CI, up to a new tool called Proviso which is targeted to standardize enterprise deployment processes. Another interesting aspect was how Sonatype standardized their component model around Maven and Hudson plugins as well as their repository manager to achieve better reuse, which is now all built around JSR-330.
As a company mainly dealing with enterprise development we were of course giving a main focus on all the Java EE 6 talks. Spec lead Roberto Chinnici gave one of them explaining the Java EE programming model. Even though we have been working with the technology for a while now, this gave a nice summary and showed again that you still get that extra little information from JavaOne that makes the conference very useful when you hear things from the mind behind it. Roberto provided a quick overview on managed beans, CDI and several "must knows" when changing to the new programming model.
On the same track was Dan Allen with presenting in depth on CDI and Seam 3. The talk went from all the CDI concepts from typesafe injection with qualifiers over loose coupling with events to the SPI in CDI leading to Seam 3. This is now split in several independent modules where your application can take what it needs. Spinning this thought further - why not break up all the EJB services and make them a portable extension? We might see something like this in Java EE 7. By the way, Dan is not only an excellent author (when are we going to see Seam in Action 2nd edition?), but also a great speaker - make sure to visit one of his talks when you got a chance.
To close the sessions on Java EE, we were deeply impressed by the session on Arquillian. The framework evolved out of working on the RI for CDI (Weld) and takes the idea of the new EE component model to your unit tests. By eliminating the build to create archives for integration tests, the team around Arquillian has managed to decrease complexity and improve speed of the integration test massively - something critical if you want your team to actually use them. The outcome was a generic component testing framework, which we're convinced will significantly improve quality on EE applications. You can programmatically create an archive on the components you want to test, and run the test either in container or as client in a running application server. This is the time when you feel that enterprise engineering is still a young discipline - why has this not been around for longer?
Last but not least, if you have been following our people spotlights you probably know we're big fans of the Java Posse! As in the last 4 years the posse was present also at this year's JavaOne holding a BoF in the Mason street tent, celebrating the 5th anniversary of the Java Posse. While it was less interactive than the last years BoFs, we got a great show with special guest "Loose" Bruce Kerr giving a live performance of the Posse song, funky costumes and interesting insights on the future of Java - well kind of. Go and download the recordings - although this time I guess it's too bad this is not a video podcast!
As usual we enjoyed being here - CU again next year!