Increase date by given int

[bobrivers2003]

Hi there,

I have the following code:

DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
System.out.println(sdf.format(new Date()));

that prints the date in a given format. In this class I have an intand based on that int I would want to increase/decrease the date by that value. E.g. if the date is 12/10/2006 and the given int was 2 I want to change the date to 14/10/2006. (Likewise for -ve numbers)

I have heard of calendar objects but have no idea how to implement them.

Any help would be greatly appreciated.

Thanks and Regards

 

[sedj]

This code will roll the date forward by 14 days from today :

Calendar cal = GregorianCalendar.getInstance();
cal.roll(Calendar.DAY_OF_MONTH, 14);

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[bobrivers2003]

Thanks for that but when I do a System.out.println(cal) I get all the date information in the world.

Is there a way to extract the Calendar.MONTH and assign it to a variable?

Thanks again

 

[bobrivers2003]

For anyone who will be looking at this thread I patched this together:

import java.util.*;
import java.text.*;




public class month {

public static void main(String[] args) throws Exception {


DateFormat myDate = new SimpleDateFormat("dd/MM/yyyy");
Calendar cal = GregorianCalendar.getInstance();

int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH)+ 1;
int day = cal.get(Calendar.DAY_OF_MONTH);

// prints current date:
System.out.println(day + "" + month + "" + year);

// add 15 days
cal.add(Calendar.DAY_OF_MONTH, 25);

year = cal.get(Calendar.YEAR);
month = cal.get(Calendar.MONTH) + 1;
day = cal.get(Calendar.DAY_OF_MONTH);


System.out.println(day + "" + month + "" + year);


String strDate = myDate.format(cal.getTime());

System.out.println(strDate);




}

}


Thanks for the help

 

[timw]

Calendar cal = Calendar.getInstance();

//this month
int month = cal.get(Calendar.MONTH);

//if we've got some other date in the Date instance myDate
//then ...
cal.setTime(myDate);
int myMonth = cal.get(Calendar.MONTH);
//will get it

Tim