problem with .roll(Calendar.DAY_OF_YEAR, 365 );

Hi, im using the following code to store a future date in a string, the problem is that when the date goes into a new year the current year remains.
So if I "roll" past december of this year, the year stored in the date will be 2004 instead of 2005. How can I resolve this and changing my code as little as possible. Thanks

Calendar date = Calendar.getInstance();
finishDate.roll(Calendar.DAY_OF_YEAR, 365 );
String Date = sdf.format(date.getTime());

SuAeE

Asked: 2004-09-17

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Java

2 Solutions

LVL 2

SergeiKoCommented: 2004-09-17

Hello, SuAeE.

Try add() mthod instead of roll() in Calendar class:

finishDate.add( Calendar.DAY_OF_YEAR, 365 );

Regards.

LVL 2

SergeiKoCommented: 2004-09-17

Whole example for test th difference is.

import java.util.*;

class DateChanger
{
public static void main( String[] args )
{
Calendar date = Calendar.getInstance();
System.out.println( "1. now=" + date.getTime() );

date.roll( Calendar.DAY_OF_YEAR, 365 );
System.out.println( "1. roll=" + date.getTime() );

date = Calendar.getInstance();
System.out.println( "2. now=" + date.getTime() );

date.add( Calendar.DAY_OF_YEAR, 365 );
System.out.println( "2. add=" + date.getTime() );
}
}

LVL 6

CodingExpertsCommented: 2004-09-17

Hello, SuAeE.
May be you can try this snippet..

import java.util.Calendar;
import java.util.GregorianCalendar;

class calendar
{
public static void main(String args[])
{
Calendar c = new GregorianCalendar() ;
int curYear = c.get(GregorianCalendar.YEAR);
System.out.println(" current Year ="+curYear );
c.roll(GregorianCalendar.YEAR,1);
int newYear = c.get(GregorianCalendar.YEAR);
System.out.println(" current Year ="+ newYear);
}
}

Bye
CodingExperts

LVL 3

nesnemisCommented: 2004-09-17

Hi

You can use finishDate.add(GregorianCalendar.YEAR, 1 );

This way you won't get one day short if it's a leapyear...

SuAeEAuthor Commented: 2004-09-21

Thanks for that guys :)

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