How to use

encode

method

in

js.util.Base64

/**
 * Encode string value into Base64 format.
 * 
 * @param string string to encode.
 * @return given <code>string</code> value encoded Base64.
 */
public static String encode(String string) {
  try {
    return encode(string.getBytes("UTF-8"));
  } catch (UnsupportedEncodingException e) {
    throw new BugError("JVM with missing support for UTF-8.");
  }
}

  write(Base64.encode(encryptedMessage));
} catch (InvalidKeyException | NoSuchPaddingException | BadPaddingException | IllegalBlockSizeException e) {