java unicode转换代码

static Pattern p = Pattern.compile("////u([0123456789abcdef]{4})");
    public static String stringToUnicode(String s) {
        Matcher matcher = p.matcher(s);
        StringBuffer buffer = new StringBuffer();
        while (matcher.find()) {
            int codePoint = Integer.parseInt(matcher.group(1), 16);
            matcher.appendReplacement(buffer, "");
            buffer.appendCodePoint(codePoint);
        }
        matcher.appendTail(buffer);
        return buffer.toString();
    }
    public static void main(String[] args) {
        System.out.println(stringToUnicode("//u5145//u503c//u6210//u529f"));
    }