It can't be called Java unless it passes the TCK. Even so, it only gets a limited trademark license unless you're a paying customer of Oracle. Well fine, withou

It can't be called Java unless it passes the TCK. Even so, it only gets a limited trademark license unless you're a paying customer of Oracle. Well fine, without licensing then passing the TCK, you can't call it Java, so what? Well, since you're foregoing certification, even if you're deriving substantially from the OpenJDK, you're also foregoing the automatic patent grants. And since it's GPLv2, not GPLv3, Oracle or any of the companies who collaborated in the patent licensing scheme, is now free to sue you for billions or trillions. So no, OpenJDK has a field-of-use restriction in that the only way for a company to build a successful product (or even a failed one) based on it and not get sued into oblivion is to license and pass the TCK to get the license for trademarks and protection for patents. Here's a link which should prove informative: http://dirkriehle.com/2011/06/30/the-java-ip-story/ http://dirkriehle.com/2011/06/30/the-java-ip-story/