final public static boolean isMultibyteCharset(String javaEncodingName){
  return MULTIBYTE_ENCODINGS.contains(javaEncodingName.toUpperCase(Locale.ENGLISH));
}

final public static boolean isMultibyteCharset ( String javaEncodingName ) { return MULTIBYTE_ENCODINGS . contains ( javaEncodingName . toUpperCase ( Locale . ENGLISH ) ) ; }
character sets that we can ' t convert ourselves .
