Adding seconds to time

[Will Paul]

Not sure if this is beginner or intermediate. How can I add seconds to a time value as in hh:mm:ss? For example, 30 (seconds) + 10:30:05
[ November 22, 2005: Message edited by: Will Paul ]

[Michael Dunn]

one of the ways

  
System.out.println("now = "+new java.text.SimpleDateFormat("hh:mm:ss").format(new java.util.Date()));
System.out.println("now + 30 = "+new java.text.SimpleDateFormat("hh:mm:ss").format(new java.util.Date(System.currentTimeMillis()+30000)));

[Jeff Albertson]

Here's another way, if you are using calendar:

import java.util.*;
import java.text.*;
 
public class Test {
    public static void main(String[] args) throws ParseException {
        DateFormat df = new SimpleDateFormat("hh:mm:ss a");
        Date date = df.parse("11:59:45 AM");
        System.out.println("time, after round trip: " + df.format(date));
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.add(Calendar.SECOND, 30);
        date = cal.getTime();
        System.out.println("time+30: " + df.format(date));
    }
}