JRockit, was a proprietary Java virtual machine (JVM) originally developed by Appeal Virtual Machines and acquired by BEA Systems in 2002,[1] became part of Oracle Fusion Middleware as part of acquisition of BEA Systems in 2008.

Final release
JDK 28.2.3 / 12 April 2012 (2012-04-12)
Written inC and Java
TypeJava Virtual Machine

The JRockit code base was discontinued by Oracle, with some features being integrated into the HotSpot virtual machine as part of the mainline development of the Java platform. JRockit only ever supported Java 6, which is now considered an obsolete release.


Following the finalization of the acquisition of Sun Microsystems, Oracle announced in JavaOne 2010 that the best features of JRockit would be implemented in OpenJDK.[2][3]

In May 2011, Oracle announced that JRockit has become free, and confirmed the plan to port JRockit features on OpenJDK.[4]


  1. Thomas Risberg (2002-02-26). "BEA Acquires Appeal Virtual Machines, Makers of JRockit". TheServerSide.com. Retrieved 2009-03-04.
  2. "Java Virtual Machine Strategy" (PDF). Oracle Corporation. September 2010. Archived from the original (PDF) on 2011-06-01. Retrieved 2011-05-22.
  3. Henrik Ståhl (2010-11-10). "Oracle's JVM Strategy". Oracle Corporation. Archived from the original on 2011-05-22. Retrieved 2011-05-22.
  4. "JRockit is Now Free (and Other Java License Updates)". Oracle Corporation. 2011-05-18. Archived from the original on 2011-05-21. Retrieved 2011-05-22. Since we are converging the JVMs technically it makes sense to treat them as a single "product" with two different incarnations/implementations. Second, by making JRockit free we hope to get more feedback on any regressions in the converged JVM vs current JRockit, which will help our convergence project.

Official website

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