@Override
        public String format(LogRecord record) {
          String level = record.getLevel() == Level.WARNING ? "WARN" : record.getLevel().toString();
          String result =  String.format("%1$td/%1$tm %1$tT %2$5s %3$s - %4$s%5$s",
                                         record.getMillis(),
                                         level,
                                         record.getLoggerName(),
                                         record.getMessage(),
                                         System.lineSeparator());
          Throwable thrown = record.getThrown();
          if (thrown != null) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            thrown.printStackTrace(pw);
            return result + sw;
          }
          return result;
        }
@Override
        public String format(LogRecord record)