The IBM Developer Kit for Linux®, Java™ 2 Technology Edition is a development kit and runtime environment that contains IBM's just-in-time compiler, enhanced with a unique Mixed Mode Interpreter and a re-engineered Java 2 virtual machine. Like earlier IBM Java 2 Standard Edition versions, the IBM Developer Kit for Linux passes Sun's Java compatibility test and provides stability and performance when you deploy your enterprise e-business applications.
For information on the operating system platforms and Linux distributions that have been tested, please refer to the Tested Platforms and Distributions page. Customers who obtain the IBM Java 2 Standard Edition SDK by purchasing an IBM product (for example, WebSphere) can obtain support via the product's support team. When obtained free via a download or via a Linux distribution, the IBM Java 2 Standard Edition SDK has no support unless such support is purchased as part of a chargeable support offering. Periodic updates incorporating fixes may be made available as deemed appropriate by IBM.
The 1.4.2 level is an in-service replacement of the 1.4.1 level. Only the latest available 1.4 level is fully supported. Our implementation of version 1.4.2 includes enhancements to the JIT compiler, garbage collection technology, and JVM serviceability. We also include an updated XML parser. The 1.4.2 Java SDK works with the new NPTL threading library when run on the Red Hat EL 3 and SuSE SLES 9 distributions.