...
Version Specific Details
The behavior described above in the Noncompliant Code Example has been demonstrated in Java 1.5.0 versions running on Mac OS X Tiger, Solaris 10/Sparc64, and Ubuntu Linux 8.04, but not in Java 1.6.0 versions running on Windows XP or Linux (unless the target version of both class files is specified as 1.4 or earlier).
...