how to work with next/prev clicks to get the next date in sequence

Question

Possible Duplicate:
How to add days to a date in Java

I need to get the next date, on click of next link, and get the previous date on click of previous link. How do I increment or decrement dates? I am not getting how to work with date to increment/decrement it.

@user1195292 well, incrementing is adding 1 and decrementing is adding -1, so the linked question essentially has the same goal. — Thomas, Mar 27 '12 at 10:06

Android Killer · Accepted Answer · 2012-03-28T12:09:59.593

2

Calendar cal = Calendar.getInstance();
DateFormat formatter = new SimpleDateFormat("dd-MMM-yy");
Date date = formatter.parse(your_String_date);
cal.setTime(date);

Now do the below as shown:

for increment

cal.add( Calendar.DATE, 1 );

for decrement

cal.add( Calendar.DATE, -1 );

If you want to increment/decrement more days then just replace 1 by your number of days.

Hope it will help you.

Here is the Calendar class of java.

edited Mar 28 '12 at 12:09

answered Mar 27 '12 at 10:05

Android Killer

18,174
13
67
90

thanks this is what i wanted to do for blackberry thanks – user1195292 Mar 27 '12 at 10:12
,i have the date in the form of string as below String dateCurrent = getSelectedDate(); ,how can i increment this? – user1195292 Mar 28 '12 at 09:31
@user1195292 I have edites the answer please check it. – Android Killer Mar 28 '12 at 09:56
,Let me try,i will update here if it works /not – user1195292 Mar 28 '12 at 10:09
i dont have .parse method in the blackberry dateFormat API to get the date from string – user1195292 Mar 28 '12 at 10:20
@user1195292 If you are using java then use import java.text.DateFormat – Android Killer Mar 28 '12 at 10:24
its java ,but using Blackberry date api – user1195292 Mar 28 '12 at 10:26
you can use java date inside java.util.Date also same effect will be there.Is not it ? – Android Killer Mar 28 '12 at 10:28
i cannot find cal.add () in calendar api – user1195292 Mar 28 '12 at 11:46
@user1195292 link given in my answer. – Android Killer Mar 28 '12 at 12:10
I am using java.util.Calendar; but i cannot add the method cal.add – user1195292 Mar 28 '12 at 14:31

score 1 · Answer 2 · answered Mar 27 '12 at 10:05

You might want to use JodaTime instead of the standard date api, since it's easier to use and a JodaTime-like api will be added to Java 8 anyways.

With the standard api have a look at the Apache Commons Lang library and especially its DateUtils class, which has a addDays(date, numberOfDays) method.

how to work with next/prev clicks to get the next date in sequence

2 Answers2