How can i increment my date by 1

Question

I want to increment the date by one. I have the below code while running the code I am getting unparseable date finally I want the date as string in the format of MM-DD-YYYY. But same program is working with the YYYY-MM-DD format but i want mydate in this format(MM-DD-YYYY)

String dt = schReq.getStartDate();  // Start date
SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yyyy");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(dt));
c.add(Calendar.DATE, days);  // number of days to add
dt = sdf.format(c.getTime()); 
schReq.setStartDate(dt);

Can anyone please help me?

possible duplicate of [Adding days to a date in Java](http://stackoverflow.com/questions/12087419/adding-days-to-a-date-in-java) — Tabrej Khan, Dec 17 '14 at 07:35
There are many other similar questions in SO. This one should be closed. — Paco Abato, Dec 17 '14 at 07:50
possible duplicate of [Increment existing date by 1 day](http://stackoverflow.com/questions/5129672/increment-existing-date-by-1-day) — RAS, Dec 17 '14 at 08:49

Jens · Answer 1 · 2014-12-17T08:07:28.310

1

You have to use two different DateFormats:

one for parsing the string and one for formatting.

String dt = schReq.getStartDate();  // Start date
SimpleDateFormat sdf_parser = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yyyy");
Calendar c = Calendar.getInstance();
c.setTime(sdf_parser.parse(dt));
c.add(Calendar.DATE, days);  // number of days to add
dt = sdf.format(c.getTime()); 
schReq.setStartDate(dt);

edited Dec 17 '14 at 08:07

answered Dec 17 '14 at 07:38

Jens

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Thank you Jens for your reply.if i executed the above code in the place of dt i given dt="12-17-2014" i am getting 07-07-0017 as output but i need to get 12-18-2014 – Narendra Dec 17 '14 at 08:06
@user3669480 Sorry my fauld. I have updated my answer. Please try again – Jens Dec 17 '14 at 08:07
again same problem now it is showing 11-05-0018 as a date – Narendra Dec 17 '14 at 08:20
In your question you say the dt has the format `YYYY-MM-DD` and now you give the format `MM-dd-yyyy`. Here is something worng. – Jens Dec 17 '14 at 08:27

score 1 · Accepted Answer · answered Dec 17 '14 at 08:20

1

The code should be working fine as long as dt and days are correct. This gave me 12-18-2014:

String dt = "12-17-2014"; // Start date
SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yyyy");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(dt));
c.add(Calendar.DATE, 1); // number of days to add
dt = sdf.format(c.getTime());

answered Dec 17 '14 at 08:20

Jared Rummler

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Just check the value of dt. I'm sure that is what is causing your problem. – Jared Rummler Dec 17 '14 at 08:35

How can i increment my date by 1

2 Answers2