public static String UTF8toISO(String str){
        Charset utf8charset = Charset.forName("UTF-8");
        Charset iso88591charset = Charset.forName("ISO-8859-1");

        ByteBuffer inputBuffer = ByteBuffer.wrap(str.getBytes());

        // decode UTF-8
        CharBuffer data = utf8charset.decode(inputBuffer);

        // encode ISO-8559-1
        ByteBuffer outputBuffer = iso88591charset.encode(data);
        byte[] outputData = outputBuffer.array();

        return new String(outputData);
    }