java 获取两个日期之间的所有天数

Calendar start = Calendar.getInstance();
start.set(2017, 2, 20);
Long startTIme = start.getTimeInMillis();

Calendar end = Calendar.getInstance();
end.set(2017, 2, 23);
Long endTime = end.getTimeInMillis();

Long oneDay = 1000 * 60 * 60 * 24l;

Long time = startTIme;
while (time <= endTime) {
Date d = new Date(time);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
System.out.println(df.format(d));
time += oneDay;
}