java获取当天的开始时间，当前周的开始时间

? ?在程序里面要获取当前的开始时间和结束时间，以及当前天所在的周的开始时间和结束时间，在这个地方记录一下。

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               Calendar currentDate = new GregorianCalendar(); currentDate.setFirstDayOfWeek(Calendar.MONDAY);int currentWeek = currentDate.get(Calendar.DAY_OF_WEEK);currentDate.set(Calendar.HOUR_OF_DAY, 0);currentDate.set(Calendar.MINUTE, 0);currentDate.set(Calendar.SECOND, 0);dateCursor.setTodayStart((Date)currentDate.getTime().clone());currentDate.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);dateCursor.setWeekStart((Date)currentDate.getTime().clone());currentDate.set(Calendar.DAY_OF_WEEK, currentWeek);currentDate.set(Calendar.HOUR_OF_DAY, 23);currentDate.set(Calendar.MINUTE, 59);currentDate.set(Calendar.SECOND, 59);dateCursor.setTodayEnd((Date)currentDate.getTime().clone());currentDate.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);dateCursor.setWeekEnd((Date)currentDate.getTime().clone());

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