Java Today

New OpenJDK Community Technology Compatibility Kit License
Sun has announced the immediate availability of the OpenJDK Community Technology Compatibility Kit (TCK) License. "The OpenJDK Community TCK License will enable developers to test the compatibility of their contributions to the OpenJDK project. It will also allow distributors to test complete implementations that are substantially derived from OpenJDK and distributed under GPLv2. Organizations or individual developers that use the OpenJDK Community TCK License and then successfully pass compatibility testing, will also have the option of branding their implementation with Sun's "Java Compatible" trademark and logo." Early commentary on the license and the thinking behind it has already been posted by Rich Green, Simon Phipps, and Dalibor Topic.

Ask The Experts: Mobile Service Architecture (MSA), JSR 248
Got a question about MSA? Then save the date. August 20 - 24th is your opportunity to Ask the Experts! MSA is the Java ME optional package that defines the next generation Java ME platform. Your questions will be answered by Java ME Community Project Owners Hinkmond Wong (phoneME Advanced) and Mikhail Gorshenev (cqME), and E-ming Saung, Product Line Manager for Java ME SDKs. For more information about this event and how to participate, go to the Ask the Experts page.

Scripting Languages on the JVM Compared
Daniel Lopez has kicked off a series of blogs comparing different scripting languages that can be run on the JVM. In his first entry, he checks out Groovy for querying a DataSource obtained via JNDI, and finds that Groovy's great at getting through the data and building the XML, though the JNDI access is a stumbling block. In the next installment, he tries the same thing with the Rhino JavaScript implementation included in JDK 6, with similar results and faster performance. A note on the second entry says that Jython will probably be the next language evaluated in the series.

Weblogs

Java-in-browser availability
One of the questions/concerns about Java is, can a web site author assume that it's there? Part of the popularity of Flash or Javascript is it's in all browsers, but the belief is that Java probably is not installed. —  David Herron

CVM: Why use the C or Java heap?
A comment in a previous blog asks why CVM keeps some data structures in the C heap instead of the Java heap. Here's the answer. —  Mark Lam

New (really cool) demo added to phoneME UI Labs!
Here's proof that we have indeed been busily toiling away to bring you more cool UI examples. We have just made the source to the MobileAerith demo available on phoneME UI Labs. —  Aastha Bhardwaj

Forums

Re: Does today's TCK announcement apply to phoneME?
This announcement pertains to OpenJDK. In the Java ME space things are more difficult since a Java ME implemementation typically covers by multiple JSRs (CLDC, MDIP, WMA, etc) and the TCKs for each JSR may come from different parties (such as Sun, Mototola, Nokia, etc). The decisions about those TCKs are made by the individual parties. However, because TCK access is an important topic Sun is in talks with other TCK owners and Sun is considering its options related to the Java ME TCKs it owns. No final decisions have been made yet. — 

Re: Infinite XML Loop
That exception typically comes from JAXB marshaling code when it detects a cycle in the object graph. Are you returning the object from a web service? Your in-memory object probably has the bidirectional references set up, this can happen if you traverse the relationships in your code. So, instead of relying on fetch type, you should explicitly cut the cycles in the graph by setting some references null. — 

Re: help in assigning progressbar to my project
Then you can either upgrade to 6 or you can make do with a class of your own: spawn an undecorated frame with an image as content, and draw as necessary. Append a splash.setVisible(false) to the EDT after telling the GUI to load and you should have a splash screen. It's what people did before SplashScreen became available as a class. —