How to calculate time difference in java?

Question

I want to subtract two timeperiods say 16:00:00 from 19:00:00. Is there any java function for this? The results can be in milliseconds, seconds, or minutes.

Answer 1

public class timeDifference {

public static void main(String[] args) {

    try {

        Date startTime = Calendar.getInstance().getTime();
        Thread.sleep(10000);
        Date endTime = Calendar.getInstance().getTime();

        long difference = endTime.getTime() - startTime.getTime();

        long differenceSeconds = difference / 1000 % 60;
        long differenceMinutes = difference / (60 * 1000) % 60;
        long differenceHours = difference / (60 * 60 * 1000) % 24;
        long differenceDays = difference / (24 * 60 * 60 * 1000);

        System.out.println(differenceDays + " days, ");
        System.out.println(differenceHours + " hours, ");
        System.out.println(differenceMinutes + " minutes, ");
        System.out.println(differenceSeconds + " seconds.");

    } catch (Exception e) {
        e.printStackTrace();
    }
}

}