Java Programs Made Easy

Q)... Find the number of days between two input dates.

1. package Set1;
2. import java.text.*;
3. import java.util.*;
4. public class ClassSet30 {
5. public static int dateDifference(String s1,String s2) throws ParseException{
6.  SimpleDateFormat sd=new SimpleDateFormat("dd/MM/yyyy");
7.  Date d=sd.parse(s1);
8.  Calendar c=Calendar.getInstance();
9.  c.setTime(d);
10.  long d1=c.getTimeInMillis();
11.  d=sd.parse(s2);
12.  c.setTime(d);
13.  long d2=c.getTimeInMillis();
14.  int n=Math.abs((int) ((d1-d2)/(1000*3600*24)));
15.  return n;
16.  }
17. public static void main(String[] args) throws ParseException {
18.  String s1="27/12/2009";
19.  String s2="15/09/2012";
20.  System.out.println(dateDifference(s1,s2));
21.  }
22. }