Transitioning from Apple extensions

[Chris Harshman]

On Wed, May 30, 2012 at 4:29 AM, Artem Ananiev <artem.ananiev at oracle.com>wrote:

> We at Oracle do our best to support all Java apps on Mac OS X that were
> written for Apple's JDK6 and relied on Apple's extensions (system
> properties, command line args, com.apple classes, etc.), but we don't
> provide any official support for anything except public APIs.
>

Is there any sort of guide (official or otherwise) mapping Apple's
extensions to public API replacement/equivalent/work-arounds? (I.e., is
there a way current developers can hedge their bets, coding to the 'rich'
Apple JDK6 experience but also degrading as gracefully as possible for
OpenJDK 7+?)

Thanks,
Chris