I have the following questions on IBM J9 JDK/JRE.
- Does any one know the location where I can download the latest J9 JDK? I googed it and couldn't find the location.
- What is the relation between IBM J9 JDK and Apache Harmony project?
Thank you.
Answer
As McDowell suggested in his comment. You can get the J9 JDK from this link: https://developer.ibm.com/javasdk/downloads/. Specifically..
Linux - https://www.ibm.com/developerworks/java/jdk/linux/download.html
Windows - To get the JDK for windows is a tricky one. You have to download IBM Development Package for Eclipse. This will give you a eclipse Europa (3.3) version, along with J9 JDK version 1.6.
Previously J9 was the recommended VM for running the harmony class files, as their own version of JVM was incomplete. Have a look at this wiki page.
http://en.wikipedia.org/wiki/Apache_Harmony
In the end of November, 2006, the language support provided by these virtual machine was still incomplete, and the build instructions recommended to use IBM's proprietary J9 instead to run the class library test suite. However, this is not necessary anymore (as of July 2007). The DRLVM virtual machine is currently (as of July 2006) under heavy development, so a fast improvement of its features can be expected