获取某一年的某一周的周一//周日的日期

//获取某一年的某一周的周日日期
public static Date getEndDayOfWeekNo(int year, int weekNo) throws ParseException {
    Calendar cal = getCalendarFormYear(year);
    cal.set(Calendar.WEEK_OF_YEAR, weekNo);
    cal.add(Calendar.DAY_OF_WEEK, 6);
    //获得SimpleDateFormat类，我们转换为yyyy-MM-dd的时间格式
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");//注意月份是MM
    String start = cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH) + 1) + "-" +
            cal.get(Calendar.DAY_OF_MONTH);
    Date date= java.sql.Date.valueOf(start);
    return date;}
//获取某一年的某一周的周一日期
public static Date getStartDayOfWeekNo(int year, int weekNo) throws ParseException {
    Calendar cal = getCalendarFormYear(year);
    cal.set(Calendar.WEEK_OF_YEAR, weekNo);
    //获得SimpleDateFormat类，我们转换为yyyy-MM-dd的时间格式
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");//注意月份是MM
    String start = cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH) + 1) + "-" +
            cal.get(Calendar.DAY_OF_MONTH);
    Date date= java.sql.Date.valueOf(start);
    return date;
}