获取指定时间间隔内的日期集合
public class TimeTest { public static void main(String[] args) throws ParseException { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date startTime = sdf.parse("2021-05-01"); Date endTime = sdf.parse("2021-07-01"); Calendar instance = Calendar.getInstance(); instance.setTime(startTime); ArrayList<String> timeList = new ArrayList<>(); while (!startTime.after(endTime)) { String time = sdf.format(startTime); instance.add(Calendar.DAY_OF_MONTH, +1); startTime=instance.getTime(); timeList.add(time); System.out.println(time); } } }