RecipientsFormatter.java 文件源码

private static String parseBracketedNumber(String recipient) throws RecipientFormattingException {
  int begin    = recipient.indexOf('<');
  int end      = recipient.indexOf('>');
  String value = recipient.substring(begin + 1, end);

  if (PhoneNumberUtils.isWellFormedSmsAddress(value))
    return value;
  else
    throw new RecipientFormattingException("Bracketed value: " + value + " is not valid.");
}