OTOH, AFAIU OS X does not display frame icons.
#Java set icon size windows
Windows even handles a PNG with partial transparency with aplomb. Windows (at least) will scale to size, and pad with transparency for any non-square image. It not only displays the image over the top of the sound trace, but also sets it as the (single) frame icon. I have a DukeBox player that attempts to pick up track or album art that applies to the track that is playing. If the image is not rectangular, Windows will pad it.
The JRE or system will scale the one image according to an algorithm that is not within the control of the developer. What happens when you don't provide multiple sizes? The size of 'a small icon' changes over time & across devices. However I highly recommend adding something like -16x16 to a icon image names to make it explicit. The JRE will base the choice on the actual size of the image as measured once loaded. Yes, the file names were chosen to include the size information for the benefit of developers. it doesn't matter on file names or anything - windows just picks the icons based on the image size? Java Web Start provides similar options for multiple sizes of icon for use in desktop shortcuts & menu items. If the image is not square, Windows will pad it. This image shows the small icon used for the GUI, the larger one is seen when alt-tabbing between windows. There is an example on the File Browser GUI thread. Depending on the platform capabilities one of several images of different dimensions might be used as the window's icon.
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