((DateFormat) timeFormat).setLenient(false);
try
{
MaskFormatter dateMask1 = new MaskFormatter("##:##:##");
dateMask1.install(textField4jStartTime);
MaskFormatter dateMask2 = new MaskFormatter("##:##:##");
dateMask2.install(textField4jStartTime);
} catch (ParseException ex)
{