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Java Calendar Class

Posted on 2004-08-10
10
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Last Modified: 2010-03-31
Hi,

I currently have a method that takes the current time and date and returns the date 3 weeks later, I want to change this to 10 calendar days later.

public Date createFirstDateFromDirectDebitDate()
      {
            Calendar firstAllowable = Calendar.getInstance();
            
            /* set calendar value to 3 weeks time */
            firstAllowable.setTime(new Date());
            firstAllowable.add(Calendar.WEEK_OF_YEAR, 3);
            
            return firstAllowable.getTime();
      }

I tried using DAY_OF_YEAR but it seems to only give me 10 working days later

firstAllowable.add(Calendar.DAY_OF_YEAR, 10);

Can anyone tell what im doing wrong??

Thanks
Suzy
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Question by:fyness
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10 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 11761913
TRY

firstAllowable.add(Calendar.DATE, 10);
0
 
LVL 35

Expert Comment

by:TimYates
ID: 11761920
firstAllowable.add(Calendar.DAY_OF_YEAR, 10);

should work
0
 
LVL 35

Expert Comment

by:girionis
ID: 11761941
> firstAllowable.add(Calendar.DAY_OF_YEAR, 10);

It should do. Maybe you are mistaken, can you double check?
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LVL 86

Expert Comment

by:CEHJ
ID: 11761989
What you have should work, although my version needs less typing ;-)

>>firstAllowable.setTime(new Date());

is redundant btw as Calendar is already initialized with the current date
0
 
LVL 35

Expert Comment

by:TimYates
ID: 11761991
> although my version needs less typing ;-)

LOL ;-)
0
 

Author Comment

by:fyness
ID: 11762085
Thanks for your replys but still no luck. I've double checked and am still having trouble, I even tried changing DAY_OF_WEEK from 10 to 6 and its the same problem. I also tried using Calendar.DATE and still no joy!

There must be another problem that i dont see yet

Thanks again for your help!
0
 
LVL 35

Expert Comment

by:TimYates
ID: 11762119
can you post more of your code?

This *does* work...
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 11762194
>>There must be another problem that i dont see yet

It will probably amount to not using the Date that you returned from your method ;-)
0
 

Accepted Solution

by:
thomasbau earned 125 total points
ID: 11785661
This has to work


  public Date createFirstDateFromDirectDebitDate()
     {
          Calendar firstAllowable = Calendar.getInstance();
          Date date = new Date();
          /*
           *Add 10 days*/
          long offset = date.getTime();
          long milPerDay = 24*60*60*1000;
          offset += 10 * milPerDay;
          date.setTime(offset);
         
          /*
           *Set the new date in the calendar*/
          firstAllowable.setTime(date);
          /* set calendar value to 3 weeks time */
          //firstAllowable.setTime(new Date());
          //firstAllowable.add(Calendar.WEEK_OF_YEAR, 3);
         
          return firstAllowable.getTime();
     }

0
 
LVL 30

Expert Comment

by:Mayank S
ID: 11791164
Are you using two firstAllowable.add () statements anywhere?
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