자바 획득 오늘 (어느 날) 은 무슨 요일 / 무슨 요일

/**

*@param date         、     “2013-06-03”     

*@return    1    、2    、3    、4    、5    、6    、7    

*/

public static int getDayofweek(String date){
  Calendar cal = Calendar.getInstance();
//   cal.setTime(new Date(System.currentTimeMillis()));
  if (date.equals("")) {
   cal.setTime(new Date(System.currentTimeMillis()));
  }else {
   cal.setTime(new Date(getDateByStr2(date).getTime()));
  }
   return cal.get(Calendar.DAY_OF_WEEK);
 }



public static Date getDateByStr2(String dd)
 {

  SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");
  Date date;
  try {
   date = sd.parse(dd);
  } catch (ParseException e) {
   date = null;
   e.printStackTrace();
  }
  return date;
 }