Calendar add question

Question

hi all ! Im needing to configure a date to be the first day of the next month we are atm. For example if we are now at second of march the date should be for april's first.
This is how Im calculating it atm.
           String sfechap = ("01" + "/" + (cal.MONTH+2) + "/" + saño2);
                System.out.println(sfechap);
                SimpleDateFormat sdfp = new SimpleDateFormat("dd/MM/yyyy");
                java.sql.Date datNac2 = new java.sql.Date(sdfp.parse(sfechap).getTime()); //pasamos la fecha a este formatoI dont know why I have to add 2 to the formula to make it work. And I dont know how its going to behave with changing years,etc.
The other method is to use cal.add(Calendar.MONTH,1); but I dont know if that changes the Calendar during the entire execution or just by that moment.
I tried to use something like:
String sfechap = ("01" + "/" + cal.add(Calendar.MONTH,1) + "/" + saño2);But this is not allowed saying that type void is not allowed.
THanks a lot for your help

Answer 1

dcminter wrote:
Also look at JodaTime which is often recommended as an alternative to the supplied Date and Calendar classes.dcminter++
#! /usr/bin/groovy
import org.joda.time.*
def firstDayOfNextMonth(date) {
    return date
            .withDayOfMonth(1)
            .withFieldAdded(DurationFieldType.months(), 1)
expected = new LocalDate("2009-04-01")
assert firstDayOfNextMonth(new LocalDate("2009-03-01")) == expected
assert firstDayOfNextMonth(new LocalDate("2009-03-31")) == expected~