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BufferedImage tag = new BufferedImage((int) newWidth,(int) newHeight,
BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(img.getScaledInstance(newWidth, newHeight,
Image.SCALE_SMOOTH), 0, 0, null);
FileOutputStream out = new FileOutputStream(outputFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(tag);
out.close();