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Set a duration in Java
To set a duration, let us declare two objects of Calendar class
Calendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance();
Set a time for one of the calendar objects
c2.add(Calendar.HOUR, 9); c2.add(Calendar.MINUTE, 15); c2.add(Calendar.SECOND, 40);
Now, find the difference between both the time. One would be the current time and another we declared above −
long calcSeconds = (c2.getTimeInMillis() - c1.getTimeInMillis()) / 1000;
The following is an example −
Example
import java.util.Calendar; public class Demo { public static void main(String args[]) { Calendar c1 = Calendar.getInstance(); Calendar c2 = Calendar.getInstance(); // set hour, minute and second c2.add(Calendar.HOUR, 9); c2.add(Calendar.MINUTE, 15); c2.add(Calendar.SECOND, 40); long calcSeconds = (c2.getTimeInMillis() - c1.getTimeInMillis()) / 1000; String time = String.format("%02d:%02d:%02d", calcSeconds / 3600, (calcSeconds % 3600) / 60, (calcSeconds % 60)); System.out.println("Time = "+time); } }
Output
Time= 09:15:40
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