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There are various ways of reading an image file in java such as BufferedImage and ImageIcon to name a few. I want to know what is the difference between these cases? Are they context dependent that in a particular case only one of them can be used?
What would be the best way of reading a image selected by JFileChooser by the user and separating the color channels of an image?
A good way is to use the different ImageIO.read methods, which return BufferedImage objects.
Image is an abstract class, so I think the real question is which subclass is more efficient for your program. Use VolatileImage if you need hardware acceleration. More on that here.