QR reader snippet to read binary qr encoded

qr_snippet.java

import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;

private static byte[] decodeQRCode(File qrCodeimage) throws IOException
{
    BufferedImage bufferedImage = ImageIO.read(qrCodeimage);
    LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    byte[] content = new byte[0];

    try {
        Result result = new MultiFormatReader().decode(bitmap);
        Map m = result.getResultMetadata();

        if (m.containsKey(ResultMetadataType.BYTE_SEGMENTS)) {
            List L = (List)m.get(ResultMetadataType.BYTE_SEGMENTS);
            content = (byte[])L.get(0);
        } else {
            content = result.getText().getBytes();
        }

    } catch (NotFoundException e) {
        System.out.println("no QR Code in the image");
    }

    return content;
}