Class TemporalFormatValidator

    • Method Detail

      • validate

        public Optional<String> validate​(String subject)
        Description copied from interface: FormatValidator
        Implementation-specific validation of subject. If a validation error occurs then implementations should return a programmer-friendly error message as a String wrapped in an Optional. If the validation succeeded then an empty optional should be returned.
        Specified by:
        validate in interface FormatValidator
        Parameters:
        subject - the string to be validated
        Returns:
        an Optional wrapping the error message if a validation error occured, otherwise an empty optional.