java unicode转义收藏

public static String ascii2native(String ascii) {



        List<String> ascii_s = new ArrayList<String>();

        String zhengz= "\\\\u[0-9,a-f,A-F]{4}";

        Pattern p = Pattern.compile(zhengz);

        Matcher m=p.matcher(ascii);

        while (m.find()){

            ascii_s.add(m.group());

        }

        for (int i = 0, j = 2; i < ascii_s.size(); i++) {

            String code = ascii_s.get(i).substring(j, j + 4);

            char ch = (char) Integer.parseInt(code, 16);

            ascii = ascii.replace(ascii_s.get(i),String.valueOf(ch));

        }

        return ascii;

}