Java DateDiff / TimeDiff

package com.java.myapp;

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

public class MyClass {

	public static void main(String[] args) {
		
		String startDate = "2013-08-01";
		String endDate = "2013-08-12";
		
		int dayDiff = dateDiff(startDate,endDate);
				
		System.out.println("Date Diff " + startDate + " and " + endDate + " = " + dayDiff);

	}
	
	public static int dateDiff(String startDate,String endDate)
	{
		
		DateFormat df = new SimpleDateFormat("yyyy-MM-dd"); 
		
    	try {
			Date startdate = df.parse(startDate);
			Date enddate = df.parse(endDate);
			
			long diff = enddate.getTime() - startdate.getTime();
			
			int dayDiff = (int) (diff / (24 * 60 * 60 * 1000));
			
			return dayDiff;
			
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return 0;
	}
	
	
}

package com.java.myapp;

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

public class MyClass {

	public static void main(String[] args) {
		
		String startTime = "2013-08-01 12:43:23";
		String endTime = "2013-08-02 21:01:21";
		
		DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
		
    	try {
			Date start = df.parse(startTime);
			Date end = df.parse(endTime);
			
			long diff = end.getTime() - start.getTime();
			
			int dayDiff = (int) (diff / (24 * 60 * 60 * 1000));
			int hourDiff = (int) (diff / (60 * 60 * 1000) % 24);
			int minuteDiff = (int) (diff / (60 * 1000) % 60);
			int secondDiff = (int) (diff / 1000 % 60);
		
			System.out.println("Day Diff = " + dayDiff);
			System.out.println("Hour Diff = " + hourDiff);
			System.out.println("Minute Diff = " + minuteDiff);
			System.out.println("Second Diff = " + secondDiff);
			
			
			
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
		
}