OpenJDK is an open-source implementation of the Java Platform, Standard Edition.

Much of the OpenJDK code is licensed under the GPL version 2 with the
Classpath exception. The Java Hotspot virtual machine source code is
licensed under the GPL version 2 only.

OpenJDK 6 should supercede the java/jdk16 port at some point in time.

WWW: http://openjdk.java.net/