Not really. They barely support it, it's half integrated into RPM and is impossibly difficult to persuade a lot of stuff to work with it due to system dependencies on certain jars. You end up having to pull a full JDK from somewhere else which isn't supported.
If you look at the CLR there are only two major current versions: 2.0 and 4.0 and perfect legacy compat and wide support across all windows server versions.
If you look at the CLR there are only two major current versions: 2.0 and 4.0 and perfect legacy compat and wide support across all windows server versions.