Trouble with Date & Calendar?

[harry]

I want to create a Date object that will always represent tomorrow @ 04:00am
but am a bit confused on the easiest way to do this?

So if now = 7th June, 2006 @ 18:30:00 I want to create a Date object for the
8th June, 2006 @ 04:00:00 if you see what I mean?

thanks in advance

harry

 

[saimatam]

import java.text.FieldPosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**
* Code to illustrate adding a DAY and setting fixed hour
* and minute.
*
* @author Sai Matam (saimatam at yahoo dot com )
*
*/

public class NextDay4Main
{
public static SimpleDateFormat
sdf = new SimpleDateFormat("MM/dd/yy HH:mm:ss");

public static void main(String[] args)
{
GregorianCalendar cal = new GregorianCalendar();
cal.setTime(new Date());
System.out.println(" Current date is: " + formatDate(cal.getTime()));
cal.add(Calendar.DAY_OF_YEAR, 1);
cal.set(Calendar.HOUR_OF_DAY, 4);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
System.out.println("Required date is: " + formatDate(cal.getTime()));
}

public static String formatDate(Date inDate)
{
StringBuffer buf = new StringBuffer(1024);
sdf.format(inDate, buf, new FieldPosition(0) );
return buf.toString();
}
}

 

[Matt Humphrey]

I want to create a Date object that will always represent tomorrow @
04:00am
but am a bit confused on the easiest way to do this?

So if now = 7th June, 2006 @ 18:30:00 I want to create a Date object for
the
8th June, 2006 @ 04:00:00 if you see what I mean?

thanks in advance

What you want to do is to get the current date, roll the day over to the
next day and then set the timestamp to your time. Something like this:

public class Anon1 {
static SimpleDateFormat sdf = new SimpleDateFormat ("MM-dd-yyyy
HH:mm:ss.SSSS");

public static final void main (String [] args) {
Calendar cal = GregorianCalendar.getInstance ();
System.out.println(sdf.format(cal.getTime()));

cal.add(Calendar.DATE, 1);

cal.set(Calendar.HOUR_OF_DAY, 4);
cal.set(Calendar.MINUTE, 30);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND,0);

System.out.println (sdf.format(cal.getTime()));
}
}

Cheers,
Matt Humphrey (e-mail address removed) http://www.iviz.com/