SHA-256 hash in Java

        MessageDigest md;
        try
        {
            md = MessageDigest.getInstance("SHA-256");
            byte[] hashInBytes = md.digest(password.getBytes(StandardCharsets.UTF_8));

            // bytes to hex
            StringBuilder sb = new StringBuilder();
            for (byte b : hashInBytes) {
                sb.append(String.format("%02x", b));
            }
            System.out.println(sb.substring(0, 16));
        } catch (NoSuchAlgorithmException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }