A tried, tested and trusted open source implementation of the Java platform.
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, 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.