Java Date() Helper

/**

* @author Uki D. Lucas

* June 19, 2007 - Created.

*/

package com.ucc.csd.server.common;

import java.text.DateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.GregorianCalendar;

import java.util.Locale;

public class DateHelper

{

public static final int MILISECONDS_IN_ONE_HOUR = 3600000;

public static Date build(int year, int month, int day)

{

GregorianCalendar calendar = new GregorianCalendar();

calendar.set(year, month - 1, day);

return calendar.getTime();

}

public static boolean compareDates(Date startDt, Date endDate)

{

if (endDate.after(startDt))

return true;

return false;

}

public static Date incrementDays(Date date, int days)

{

GregorianCalendar calendar = new GregorianCalendar();

calendar.setTime(date);

int year = calendar.get(Calendar.YEAR);

int month = calendar.get(Calendar.MONTH) + 1;

int day = calendar.get(Calendar.DAY_OF_MONTH) + days;

System.out.println("year: " + year);

System.out.println("month: " + month);

System.out.println("day: " + day);

return DateHelper.build(year, month, day);

}

public static String convertToLocalized(Date date, String countryCode, String languageCode, int format)

{

Locale locale = new Locale(languageCode, countryCode);

DateFormat df = DateFormat.getDateInstance(format, locale);

return df.format(date);

}

/**

* returns string eg. 27-Jul-2006

*

* @author Uki D. Lucas

*/

public static String convertToOracle(Date date)

{

java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("dd-MMM-yyyy");

return sdf.format(date);

}

/** outputs format: 5/14/08 */

public static String convertToShortLocalizedUSA(Date date)

{

String countryCode = "US";

String languageCode = "en";

int format = DateFormat.SHORT;

return convertToLocalized(date, countryCode, languageCode, format);

}

/**

* returns string eg. 20070321

*

* @author Uki D. Lucas

*/

public static String convertToyyyyMMdd(Date date)

{

java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyyMMdd");

return sdf.format(date);

}

/**

* returns string eg. 2007

* @author Uki D. Lucas

*/

public static String getJulian(Date date)

{

java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("DDD");

return sdf.format(date);

}

/**

* returns string eg. 2007

* @author Uki D. Lucas

*/

public static String getYear(Date date)

{

java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy");

return sdf.format(date);

}

}