Hey, great ! Sun and FreeBSD agreed on Java distribution and now J2SDK can get distributed with FreeBSD. No more get linux-compat => get a JDK => get Java sources => Compile and package to run Java “natively” on FreeBSD (without Linux compatibility ).
It took at least 6 hours on my slow home gateway. Also it seems to run much faster, see the results of my very serious test (2nd invokation of java -version)