java获取日期之间的天数
public static int getDays(String begin, String end) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
long time = format.parse(end).getTime() - format.parse(begin).getTime();
int n = (int) (time / (1000 * 24 * 3600));
return n;
}
public static int getDays(Date begin, Date end) {
long time = end.getTime() - begin.getTime();
return (int) time / (1000 * 24 * 3600);
}