GlassFish currently uses JDIC to provide tray icons. Java 6 comes with its own
support for Tray Icons. To be most portable (and since JDIC is under no active
maintenance anymore) we should replace JDIC Tray Icons by Java 6 Tray Icons in
the next release of GlassFish. As a result, GF tray icons would possibly be
existing on more platforms in future, and the bundled JDIC libraries can be dropped.