Date between days list

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class TestDate {
    public static void main(String[] args) {
        try {
            List days = new ArrayList();
            String start = "21/07/2011";
            String end = "08/08/2011";
            DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
            DateFormat outFormatter = new SimpleDateFormat("yyyy-MM-dd");
            Date startD = (Date) formatter.parse(start);
            Date endD = (Date) formatter.parse(end);
            long ara = 24 * 1000 * 60 * 60;
            long endTime = endD.getTime();
            long time = startD.getTime();
            while (time <= endTime) {
                days.add(new Date(time));
                time += ara;
            }
            for (int i = 0; i < days.size(); i++) {
                Date d = (Date) days.get(i);
                String day = outFormatter.format(d);
                System.out.println(day);
            }
        } catch (ParseException ex) {
            ex.printStackTrace();
        }
    }
}