how to get a list of dates between two dates in java

Solution 1:

Back in 2010, I suggested to use Joda-Time for that.

Note that Joda-Time is now in maintenance mode. Since 1.8 (2014), you should use java.time.

Add one day at a time until reaching the end date:

int days = Days.daysBetween(startDate, endDate).getDays();
List<LocalDate> dates = new ArrayList<LocalDate>(days);  // Set initial capacity to `days`.
for (int i=0; i < days; i++) {
    LocalDate d = startDate.withFieldAdded(DurationFieldType.days(), i);
    dates.add(d);
}

It wouldn't be too hard to implement your own iterator to do this as well, that would be even nicer.

Solution 2:

java.time Package

If you are using Java 8, there is a much cleaner approach. The new java.time package in Java 8 incorporates the features of the Joda-Time API.

Your requirement can be solved using the below code:

String s = "2014-05-01";
String e = "2014-05-10";
LocalDate start = LocalDate.parse(s);
LocalDate end = LocalDate.parse(e);
List<LocalDate> totalDates = new ArrayList<>();
while (!start.isAfter(end)) {
    totalDates.add(start);
    start = start.plusDays(1);
}

Solution 3:

Get the number of days between dates, inclusive.

public static List<Date> getDaysBetweenDates(Date startdate, Date enddate)
{
    List<Date> dates = new ArrayList<Date>();
    Calendar calendar = new GregorianCalendar();
    calendar.setTime(startdate);

    while (calendar.getTime().before(enddate))
    {
        Date result = calendar.getTime();
        dates.add(result);
        calendar.add(Calendar.DATE, 1);
    }
    return dates;
}

Solution 4:

Streams

Edit: Joda-Time is now deprecated, changed the answer to use Java 8 instead.

Here is the Java 8 way, using streams.

List<LocalDate> daysRange = Stream.iterate(startDate, date -> date.plusDays(1)).limit(numOfDays).collect(Collectors.toList());

Solution 5:

please find the below code.

List<Date> dates = new ArrayList<Date>();

String str_date ="27/08/2010";
String end_date ="02/09/2010";

DateFormat formatter ; 

formatter = new SimpleDateFormat("dd/MM/yyyy");
Date  startDate = (Date)formatter.parse(str_date); 
Date  endDate = (Date)formatter.parse(end_date);
long interval = 24*1000 * 60 * 60; // 1 hour in millis
long endTime =endDate.getTime() ; // create your endtime here, possibly using Calendar or Date
long curTime = startDate.getTime();
while (curTime <= endTime) {
    dates.add(new Date(curTime));
    curTime += interval;
}
for(int i=0;i<dates.size();i++){
    Date lDate =(Date)dates.get(i);
    String ds = formatter.format(lDate);    
    System.out.println(" Date is ..." + ds);
}

output:

Date is ...27/08/2010
Date is ...28/08/2010
Date is ...29/08/2010
Date is ...30/08/2010
Date is ...31/08/2010
Date is ...01/09/2010
Date is ...02/09/2010