public static byte[] hex2byte(String hex) {
            String digital = "0123456789ABCDEF";
            String hex1 = hex.replace(" ", "");
            char[] hex2char = hex1.toCharArray();
            byte[] bytes = new byte[hex1.length() / 2];
            byte temp;
            for (int p = 0; p < bytes.length; p++) {
                temp = (byte) (digital.indexOf(hex2char[2 * p]) * 16);
                temp += digital.indexOf(hex2char[2 * p + 1]);
                bytes[p] = (byte) (temp & 0xff);
            }
            return bytes;
        }

byte [] asd =hex2byte(message);
                    outputStream.write(asd);