Remove default window icon from JFrame

I'm creating a JFrame, and In the top left corner there is an icon, a little
coffee cup... I tried setIconImage(null) but the api docs say that that loads
the default icon, which is the coffee cup in this case.

Can I completely remove that icon? I dont want to display my own, I just dont
want it there!

i think you can use a blank icon to replace it, although in the way it
is an icon actually.