There is one minor sticking point with current Flash with KernelEx
use. In my case I could install a very high version, but can NOT use
it because my CPU doesn't have the internals to use the more modern
instructions required for said Flash of recent vintage.
I really can't believe that Java is any different in that regard, but
I hear nothing on that front at all. Especially to what versions
would be the maximum for the various defective CPUs of ancient
design. My MMX CPU is stuck with Flash 9 dot something and there
isn't anything that can be done about it except to plug in a different
computer and start using it instead. Definitely living in an
information vacuum.
http://en.wikipedia.org/wiki/Streaming_SIMD_Extensions