Повторное использование кода

    public static String getFileName() {
        Calendar cal = Calendar.getInstance(); // today
        int month = cal.get(Calendar.MONTH) +1; // added 1 to get the correct month number
        int year = cal.get(Calendar.YEAR); 
        String date = year+"_"+manipulateMonth(month)+"_01";
        String fileName = System.getProperty(FILE_URL)+ date + "_" + System.getProperty(CommonConstants.FILE_NAME);
        return fileName;
    }
    
    private static String manipulateMonth(int month) {
        return StringUtils.leftPad((new Integer(month)).toString(), 2, '0');    
    }

    public static String getFileUrl() {
        Calendar cal = Calendar.getInstance(); // today
        int month = cal.get(Calendar.MONTH) +1; // added 1 to get the correct month number
        int year = cal.get(Calendar.YEAR); 
        String date = year + "_" + manipulateMonth(month) + "_01";
        String fileName = System.getProperty(FILE_URL)+ date + "_" + System.getProperty(CommonConstants.FILE_NAME);
        return fileName;
    }