code: public void closeIfAppropriate() throws JournalException {
          synchronized (JournalWriter.SYNCHRONIZER) {
              if (!open) {
                  return;
              }
  
              // if the size limit is 0 or negative, treat it as "no limit".
              long currentSize = tempFile.length();
              if (sizeLimit > 0 && currentSize > sizeLimit) {
                  close();
              }
          }
      }
docs: Check the size limit and see whether the file is big enough to close. We
  could also check the age limit here, but we trust the timer to handle
  that.