http://java.net/jira/browse/MACOSX_PORT-654 submitted 2011/11/03 by Yuri Nesterenko
In Mac OS X, there's no AltGr key but regular Alt named Option should work in similar fashion. I'm afraid I've missed a discussion related to that so I'm filing a bug to attract attention (snapshot of kittens goes here).
Presently for instance Option + a in English US locale does not produce (0xE5) and Option + 4 doesn't make a cent symbol 0xA2 like typing it in a console prompt does. It is a regression against Apple jdk 6.
Also, keytext for Option modifier is not defined neither in jdk 6 nor in this port.
I'm attaching a simple snippet printing key events just for convenience.