[ilovecaching]

As a believe in free and open source software, I think this is a very head in the sand approach. Any portion of Java, even if it's just a certification being open source is enough to run away from it when there are so many alternatives that are better languages and completely open source.

[saagarjha]

OpenJDK is GPLv2. I know of only a handful of other, popular languages with a license as copyleft as that.