code: public void setDateFormatString(String dfString) {
  		for (int i = 0; i < 4; i++) {
  			((JDateChooser) components[i]).setDateFormatString(dfString);
  		}
  	}
docs: Sets the date format string. E.g "MMMMM d, yyyy" will result in "July 21,
  2004" if this is the selected date and locale is English.
  
  @param dfString
  The dateFormatString to set.