OpenJDK 8 (Open Java Development Kit) is a free and open source implementation of the Java Platform, Standard Edition (Java SE). The upstream community project OpenJDK is currently sponsored and led by Oracle and is released under the GNU General Public License, version 2, with the Classpath Exception.
All Red Hat distributions of OpenJDK 8 on Windows are supported for development of applications that work in conjunction with JBoss Middleware, so that you have the convenience and confidence to develop and test in Windows or Linux-based environments and deploy your solution to a 100% compatible, fully supported, OpenJDK 8 on Red Hat Enterprise Linux.
Note: To use OpenJDK 8 with Red Hat JBoss Developer Studio on Windows, install the Red Hat Development Suite that bundles both OpenJDK 8 and JBoss Developer Studio and automatically configures JBoss Developer Studio to use OpenJDK 8. Mac users will be prompted to install JDK separately.
OpenJDK 9 and 10
Until the LTS release is available, Red Hat will supply "feature release" versions for Windows and Fedora, along with versions made available for RHEL (see DevTools channel). Note that the RHEL and Windows releases won't follow the RHEL support model, but the Developer Program support model - these are made available as self-support.
Shenandoah garbage collector
Beginning with version 8u141 on RHEL 7.4 (and with version 8u144 on Windows), Red Hat distributions of OpenJDK 8 include an additional ultra-low pause time garbage collector named Shenandoah. To enable Shenandoah garbage collector for your Java application, please use the following command line argument: -XX:+UseShenandoahGC
IcedTea bugtracker may be used to report issues with Web Start on Windows. Please include the appropriate details about the problematic Web Start application from "%LOCALAPPDATA%\RedHat\java-1.8.0-openjdk-[version]\webstart\javaws_last_log.txt" log file.