Java tutorial
import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; public class Main { public static void main(String[] argv) throws Exception { BufferedImage bufferedImage = new BufferedImage(200, 200, BufferedImage.TYPE_BYTE_INDEXED); AffineTransform tx = AffineTransform.getScaleInstance(-1, 1); tx.translate(-bufferedImage.getWidth(null), 0); AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR); bufferedImage = op.filter(bufferedImage, null); } }