I'm not sure this is filed correctly; I'm assuming the launcher functionality is handled in this group, and thus the icons used by the launcher are handled by that group.  Anyway, re-file as appropriate.

If you run Java <app> on Windows XP, the taskbar icon looks great; it's the little coffee cup, just as you'd expect.

First, open enough applications/windows on your XP system that XP starts grouping applications together in the taskbar.

If you run Java <app> again from a different command line (while the first app is still running), it will group the 2 Java apps together in the same taskbar button ... but the icon is now a generic window icon instead of the coffee cup.

I don't know what the fix here is, but there must be some way to tell Windows what to show when grouping applications; other application groups on my system (Netscape, IE, Windows Explorer, DOS) all have non-generic icons in their taskbar groups.

This isn't a major crisis bug, but it sure would look more professional if we looked like less of a generic app on the desktop.

(While we're at it, we might also want a full-size icon for the java.exe executable; if you do a "Thumbnail" view in the jre/bin directory, you'll see that java does not have a thumbnail associated with it so it gets the generic window thumbnail.  Maybe this is related?)