public static boolean isToday(Calendar _calendar){
  Calendar now=Calendar.getInstance();
  if (now.get(Calendar.DAY_OF_MONTH) == _calendar.get(Calendar.DAY_OF_MONTH)) {
    if (now.get(Calendar.MONTH) == _calendar.get(Calendar.MONTH)) {
      if (now.get(Calendar.YEAR) == _calendar.get(Calendar.YEAR)) {
        return true;
      }
    }
  }
  return false;
}

public static boolean isToday ( Calendar _calendar ) { Calendar now = Calendar . getInstance ( ) ; if ( now . get ( Calendar . DAY_OF_MONTH ) == _calendar . get ( Calendar . DAY_OF_MONTH ) ) { if ( now . get ( Calendar . MONTH ) == _calendar . get ( Calendar . MONTH ) ) { if ( now . get ( Calendar . YEAR ) == _calendar . get ( Calendar . YEAR ) ) { return true ; } } } return false ; }
allows to know if a given calendar instance is set today
