Unicode码转中文

具体代码（将原本的Unicode码的结果转成中文）

 String str=en;
        Pattern pattern = Pattern.compile("(\\\\u(\\w{4}))");
        Matcher matcher = pattern.matcher(str);

        while (matcher.find()) {
            String unicodeFull = matcher.group(1);
            String unicodeNum = matcher.group(2);

            char singleChar = (char) Integer.parseInt(unicodeNum, 16);

            str = str.replace(unicodeFull, singleChar + "");

        }

            System.out.println("str:  "+str);

运行结果