Using Joda-Time for Date & Time Functionality in Java

Joda-Time is a utility library for Date and Time functionality. The following example will show the usage of some function of Joda-Time. Add “joda-time-xxx.jar” into your classpath.

For more references Joda-Time.

DateUtils.java

package org.metadata.core.date; import java.text.SimpleDateFormat; import java.util.Date; import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.joda.time.Days; import org.joda.time.Months; import org.joda.time.Years; public class DateUtils {       /**        * get number of days within given start date and end date        */       public static int getPeriodOfDays(Date startDate, Date endDate) {             DateTime jdStartDate = new DateTime(startDate);             DateTime jdEndDate = new DateTime(endDate);             int dyas = Days.daysBetween(jdStartDate, jdEndDate).getDays();             return dyas;       }       /**        * get number of months within given start date and end date        */       public static int getPeriodOfMonths(Date startDate, Date endDate) {             DateTime jdStartDate = new DateTime(startDate);             DateTime jdEndDate = new DateTime(endDate);             int months = Months.monthsBetween(jdStartDate, jdEndDate).getMonths();             return months;       }             /**        * get number of years within given start date and end date        */       public static int getPeriodOfYears(Date startDate, Date endDate) {             DateTime jdStartDate = new DateTime(startDate);             DateTime jdEndDate = new DateTime(endDate);             int years = Years.yearsBetween(jdStartDate, jdEndDate).getYears();             return years;       }             /**        * Add the number of day into the given date.        */       public static Date addDays(Date date, int days) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.plusDays(days).toDate();       }             /**        * Subtract the number of day into the given date.        */       public static Date subtractDays(Date date, int days) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.minusDays(days).toDate();       }             /**        * Adding the number of month into the given date.        */       public static Date addMonths(Date date, int month) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.plusMonths(month).toDate();       }       /**        * Subtract the number of month into the given date.        */       public static Date subtractMonths(Date date, int month) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.minusMonths(month).toDate();       }       /**        * Adding the number of month into the given date.        */       public static Date addYears(Date date, int years) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.plusYears(years).toDate();       }       /**        * Subtract the number of month into the given date.        */       public static Date subtractYears(Date date, int years) {             DateTime dateTime = new DateTime(date, DateTimeZone.getDefault());             return dateTime.minusYears(years).toDate();       }             public static void main(String[] args) throws Exception {             SimpleDateFormat format = new SimpleDateFormat("dd-MM-yyyy");             Date startDate = format.parse("02-12-2013");             Date endDate = format.parse("02-05-2014");                         int pDays = DateUtils.getPeriodOfDays(startDate, endDate);             System.out.println("Period of Days : " + pDays);                         int pMonths = DateUtils.getPeriodOfMonths(startDate, endDate);             System.out.println("Period of Months : " + pMonths);             int pYears = DateUtils.getPeriodOfMonths(startDate, endDate);             System.out.println("Period of Years : " + pYears);                         Date addDate = DateUtils.addDays(startDate, 5);             System.out.println("Add Date : " + format.format(addDate));             Date addMonth = DateUtils.addMonths(startDate, 4);             System.out.println("Add Month : " + format.format(addMonth));                         Date addYear = DateUtils.addYears(startDate, 2);             System.out.println("Add Year : " + format.format(addYear));             Date subtractDate = DateUtils.subtractDays(startDate, 5);             System.out.println("Subtract Date : " + format.format(subtractDate));             Date subtractMonth = DateUtils.subtractMonths(startDate, 4);             System.out.println("Subtract Month : " + format.format(subtractMonth));                         Date subtractYear = DateUtils.subtractYears(startDate, 2);             System.out.println("Subtract Year : " + format.format(subtractYear));       } }

Output

Period of Days : 151 Period of Months : 5 Period of Years : 5 Add Date : 07-12-2013 Add Month : 02-04-2014 Add Year : 02-12-2015 Subtract Date : 27-11-2013 Subtract Month : 02-08-2013 Subtract Year : 02-12-2011