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import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
public class Main {
public static void main(String[] argv) throws Exception {
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
ColorConvertOp op = new ColorConvertOp(cs, null);
BufferedImage bufferedImage = new BufferedImage(200, 200,
BufferedImage.TYPE_BYTE_INDEXED);
bufferedImage = op.filter(bufferedImage, null);
}
}
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