code: @FFDCIgnore(value = { Exception.class })
      public void setSimpleDateFormat(String formatString) {
          if (formatString == null) {
              if (tc.isDebugEnabled()) {
                  Tr.debug(tc, "Null format string provided; date format will not be changed");
              }
              return;
          }
          try {
              simpleDateFormat = new SimpleDateFormat(formatString);
          } catch (Exception e) {
              if (tc.isDebugEnabled()) {
                  Tr.debug(tc, "Exception caught setting date format: " + e.getMessage());
                  Tr.debug(tc, "Date format will not be changed");
              }
          }
      }
docs: Set the SimpleDateFormat string that should be used to format date strings created by this class.
  
  @param formatString