Separate small, large JFrame icons

I have an icon I want to use for my JFrame, and it looks good in the Windows 7 taskbar, and in the alt-tab view, but it doesn't look so great resized to 16x16, in the top left corner of the window.

Is there a way to use a开发者_开发百科n ico file with two icon files, or two png files?

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See Window.setIconImages(List).