Hi http://www.theregister.co.uk/2011/11/13/open_sourcing_java_five_year_anni... "Two years after Java was delivered under the GPL we saw the first release of the Sun-led OpenJDK project for a Java Development Kit built using free and open-source code; that spawned the IcedT project lead by Red Hat, to build an even freer OpenJDK - the OpenJDK had contained a class-path exception to exempt from the GPL certain portions of the code that Sun or others still owned and open sourcers couldn't touch. A version of IcedTea shipped with Fedora in 2008 that was compatible with Sun's official spec" Rahul