Incrementing Date By 6 Months

[Rajesh Rajaram]

Hello,

In my application I am planning to increment the current date to 6 months.

Let�s say if the user enters today's date 09/10/2008 I want to update

03/10/2009.

Is there any API to do achieve this?


Thanks,

[Joanne Neal]

Have a look at the Calendar class

[Christian]

The following will do it

Code:

Date current = new Date();
System.out.println(current);
Calendar cal = Calendar.getInstance();
cal.setTime(current);
cal.set(Calendar.MONTH, (cal.get(Calendar.MONTH)+6));
current = cal.getTime();
System.out.println(current);

Output:
Tue Sep 16 16:36:40 PDT 2008
Mon Mar 16 16:36:40 PDT 2009

[Rob Spoor]

Originally posted by Christian Willi:

cal.set(Calendar.MONTH, (cal.get(Calendar.MONTH)+6));

Calendar.add is preferred:

cal.add(Calendar.MONTH, 6);

Your code will most likely fail if the new month is in the next year. After all, what is month 13? From the API:

Throws:
ArrayIndexOutOfBoundsException - if the specified field is out of range (field < 0 || field >= FIELD_COUNT). in non-lenient mode.

Calendar.add is designed to handle that.

[Mdoc Doctor]

Hello,

I would recommend using Joda Time which is an Open Source Java package and it is 10 fold better than the poorly designed Java Date Time API.
http://joda-time.sourceforge.net/

In addition to that a new Java JSR is based on this open source package.

[Campbell Ritchie]

"Mdoc Doctor", you appear to have missed the naming policy whihc requires first name-space-last name not obviously fictitious. Your displayed name does not conform; please go to "my profile" "update profile" and correct the displayed name to comply.

CR