Campbell Ritchie wrote:OpenJDK is a JDK provided by somebody else. Can't remember by whom.
I think its by Sun...Have a look at OpenJDK
Java SE Open-Source JDK
OpenJDK is an open-source implementation of the Java Platform, Standard Edition (Java SE) specifications.
Sun's Commercial Distribution of the JDK
People who want the benefits of commercial support and predictability can choose to use Sun's commercial distribution of the Java SE JDK or JRE.
Sun's commercial JDK releases will be built from the open-source code, for the most part.
Since there's some encumbered code in the JDK, Sun will continue to use that code in commercial releases until it is replaced by fully-functional open-source alternatives.