private void readlog(){
        try {
            BufferedReader logfilebr = new BufferedReader(new FileReader(logfile));
            String line;
            while ((line = logfilebr.readLine()) != null) {
                //System.out.println(line);
                userset.add(line);
            }
            logfilebr.close();
        } catch (Exception e) {
            System.out.println("Userlog:"+e);
        }
    }