java calculated based on the start date of an interval of time end time

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
 
public class Test {
 
    public static List<String> findDates(String stime, String etime)
            throws ParseException {
        List<String> allDate = new ArrayList();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
 
        Date dBegin = sdf.parse(stime);
        Date dEnd = sdf.parse(etime);
        allDate.add(sdf.format(dBegin));
        Calendar calBegin = Calendar.getInstance();
        // 使用给定的 Date 设置此 Calendar 的时间
        calBegin.setTime (dBegin); 
        Calendar calend Calendar.getInstance = (); 
        // set the given time this Calendar Date 
        calEnd.setTime (DEND); 
        // test if this date is after the specified date 
        while (dEnd.after (calBegin.getTime ())) { 
            // a calendar rules, adding or subtracting a specified amount of time for a given calendar field 
            calBegin.add (Calendar.DAY_OF_MONTH,. 1); 
            allDate.add (sdf.format (calBegin .getTime ())); 
        } 
        return allDate; 
    } 
 
    public static void main (String [] args) { 
        // test data 
        String stime = "2019-05-01"; 
        String etime = "2019-05-05"; 
 
        / / collection contains 2019-05-01 / 2019-05-05, need not be removed
        List <String> = new new List the ArrayList <> (); 
        the try {
            = New new SDF the SimpleDateFormat the SimpleDateFormat ( "the MM-dd-YYYY"); 
            Long Long.valueOf S = (sdf.parse (stime) .getTime ()); 
            Long E = Long.valueOf (sdf.parse (etime) .getTime ( )); 
            // only when the end time is larger than the start time query 
            IF (S <E) { 
                List = findDates (stime, etime); 
            } 
        } the catch (a ParseException E) { 
            e.printStackTrace (); 
        } 
        for (String time : List) { 
            System.out.println (Time); 
        } 
        System.out.println "number of days:" (+ list.size ()); 
    } 
}

　　

Original: https: //blog.csdn.net/qq_38955717/article/details/90448848