Stats.writeStats(getServletContext());
    public void destroy() {        //log("destroy");        Data.writeData(getServletContext());        hourlyWorker.interrupt();        try {            hourlyWorker.join();        } catch (InterruptedException ex) {}        hourlyWorker = null;        verifierWorker.interrupt();        try {            verifierWorker.join();        } catch (InterruptedException ex) {}        verifierWorker = null;    }