java.util.Date: seven days ago

Question

I have a report created in Jasper Reports which ONLY recognizes java.util.Date\'s (not Calendar or Gregorian, etc).

Is there a way to create a date 7 days prior to t

Answer 1

I'm not sure when they added these, but JasperReports has their own set of "functions" that can manipulate dates. Here is an example that I haven't tested thoroughly:

DATE(YEAR(TODAY()), MONTH(TODAY()), DAY(TODAY()) - 7)

That builds a java.util.Date with the date set to 7 days from today. If you want to use a different "anchor" date, just replace TODAY() with whatever date you want to use.

Answer 2

Try this:

Calendar c = Calendar.getInstance();
c.add(Calendar.DAY_OF_MONTH, -7);
return c.getTime();

Answer 3

You can try this,

    Calendar c = Calendar.getInstance();
    c.add(Calendar.DAY_OF_MONTH, -7);
    System.out.println(new java.sql.Date(c.getTimeInMillis()));

Answer 4

Due to the heated discussion:

The question may not have a proper answer w/o a designated timezone.

below it is some code to work w/ the default (and hence deprecated) timezone that takes into account the default timezone daylight saving.

Date date= new Date();
date.setDate(date.getDate()-7);//date works as calendar w/ negatives

While the solution does work, it is exactly as bogus as in terms of assuming the timezone.

new Date(System.currentTimeMillis() - 10080*60000);//a week has 10080 minutes

Please, don't vote for the answer.

Answer 5

I'm doing it this way :

Date oneWeekAgo = DateUtils.addDays(DateUtils.truncate(new Date(), java.util.Calendar.DAY_OF_MONTH), -7);