private static void readXmlData() {
        setXmlFolder();
        accountings = new Accountings(xmlFolder, xslFolder, htmlFolder);
        if(!xmlFolder.exists()){
            xmlFolder.mkdirs();
        }
        File subFolder = new File(xmlFolder, Accountings.ACCOUNTINGS);
        if(!subFolder.exists()){
            subFolder.mkdir();
        }
        File file = new File(xmlFolder, "Accountings.xml");
        if(file.exists()){
            XMLReader.readCollection(accountings, xmlFolder);
        }
    }