docs: private boolean checkDateTimeFormat(String pstrDtFmt)
      {
          boolean    blnRet = false;
          DateFormat objFmt = null;
  
          try
          {
              objFmt = new SimpleDateFormat(pstrDtFmt);
              blnRet = true;
          }
          catch (NullPointerException NPExIgnore)
          {
          }
          catch (IllegalArgumentException IAExIgnore)
          {
          }
          finally
          {
              if (objFmt != null) objFmt = null;
          }
          return blnRet;
      }