JAVA: 获取某一周指定的周几的时间

 

   /**

    * 获取某一周指定的周几的时间

    * 如上一周周三：week = -1,weekDay = 4(老外说周天为1)

    * @param weekDay

    * @param week

    * @return

    * @throws Exception

    */

  public String getOneDayOfWeek(int week ,int weekDay)throws Exception{

 Calendar c = Calendar.getInstance();

  c.add(Calendar.WEEK_OF_YEAR, week);

  int preNowWeekDay = c.get(Calendar.DAY_OF_WEEK);

  int preSubDays = weekDay - preNowWeekDay;

  c.add(Calendar.DAY_OF_WEEK, preSubDays);

  SimpleDateFormat sf = new SimpleDateFormat("yyyy年MM月dd日");

  return sf.format(c.getTime());

  }