java计算当前周开始日期&结束日期

 1 public static Date getFirstDayOfWeek(Date date) {
 2         Calendar c = new GregorianCalendar();
 3         c.setFirstDayOfWeek(Calendar.MONDAY);
 4         c.setTime(date);
 5         c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek()); // Monday
 6         return c.getTime();
 7     }
 8 
 9 
10     public static Date getLastDayOfWeek(Date date) {
11         Calendar c = new GregorianCalendar();
12         c.setFirstDayOfWeek(Calendar.MONDAY);
13         c.setTime(date);
14         c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek() + 6); // Sunday
15         return c.getTime();
16     }