[记录]java计算两个日期之间的间隔天數

/***
* 计算两个日期之间的间隔天數
*/
Calendar fromCalendar = Calendar.getInstance();
Date startDate = new Date(2014, 11, 20);
fromCalendar.setTime(startDate);
fromCalendar.set(Calendar.HOUR_OF_DAY, 0);
fromCalendar.set(Calendar.MINUTE, 0);
fromCalendar.set(Calendar.SECOND, 0);
fromCalendar.set(Calendar.MILLISECOND, 0);

Calendar toCalendar = Calendar.getInstance();
Date endDate = new Date(2014, 10, 20);
fromCalendar.setTime(startDate);
toCalendar.setTime(endDate);
toCalendar.set(Calendar.HOUR_OF_DAY, 0);
toCalendar.set(Calendar.MINUTE, 0);
toCalendar.set(Calendar.SECOND, 0);
toCalendar.set(Calendar.MILLISECOND, 0);

System.out.println((toCalendar.getTime().getTime() - fromCalendar
.getTime().getTime()) / (1000 * 60 * 60 * 24));