Can I use the term “JDK” or “OpenJDK” to describe my product – its built with code from the OpenJDK Project after all?
The trademarks “JDK” and “OpenJDK” are Sun’s names for the Java Development Kit, and for the open source code base and community in which the JDK is developed. Accordingly, these marks follow similar rules to the “Java” trademark. You may not refer to your product or implementation as a JDK, even if it is based on code you downloaded from the OpenJDK Project. You can use the terms “JDK” or “OpenJDK” under Sun’s “fair use” guidelines, however. Please refer to Sun’s trademark policy for more information.