OracleJDK is just OpenJDK plus a few propriety bits like Web Start and Web Plugins, (and I think Java Flight Recorder). OpenJDK is the reference implementation

OracleJDK is just OpenJDK plus a few propriety bits like Web Start and Web Plugins, (and I think Java Flight Recorder). OpenJDK is the reference implementation since Java 7. Source: http://openjdk.java.net/faq/ http://openjdk.java.net/faq/ >Is Oracle JDK based on OpenJDK? >Yes. Oracle JDK is based on the OpenJDK source code. In addition, it contains closed-source components. The final result is licensed under a Binary Code License.