Calculating The Difference Between Two Dates In Terms of Months

The following programs show how to calculate the difference between two dates in terms of months

package com.kushal.util;

 * @(#)
 * @author Kushal Paudyal
 * @version 1.00 2007/4/18

import java.util.*;

public class KPCalendar {

	/**Default Constructor**/
	public KPCalendar() {

	public double monthDifference(String calString1, String calString2)
		double difference =0;

			Calendar cal1=new GregorianCalendar();
			Date time1=new Date(calString1);


			Calendar cal2=new GregorianCalendar();
			Date time2=new Date(calString2);

			long time1Millis=cal1.getTimeInMillis();
			long time2Millis= cal2.getTimeInMillis();

			double d1=((double)time1Millis)/(1000*60*60*24);
			double d2=((double)time2Millis)/(1000*60*60*24);

		catch(Exception e)
			System.out.println("Error Occurred");
			return difference;

	/** Testing for the functionality of the method **/
	public static void main(String args [])
		KPCalendar util=new KPCalendar();

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3 Responses to Calculating Folder Size In Java

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  2. Jamie says:

    This approach uses less memory:

    public static class SizeCounter implements FileFilter
    private long total = 0;
    public SizeCounter(){};
    public boolean accept(File pathname) {
    if ( pathname.isFile()) {
    } else {
    return false;
    public long getTotal()
    return total;

    private static long getFileOrDirectorySize(File file) {
    SizeCounter counter = new SizeCounter();
    return counter.getTotal();

  3. kushalzone says:

    Thank you Jamie for your optimized solution.

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