private static String nextString(String jsonStr, AtomicInteger offset) {

        int status = 0;
        String ret = "";
        while (offset.get() < jsonStr.length()) {
            char c = jsonStr.charAt(offset.getAndIncrement());
            if (status == 0) {
                if (c == '"') {
                    status = 1;
                }
            } else if (status == 1) {
                if (c == '"') {
                    break;
                }
                ret += c;
            }

        }
        return ret;
    }