How do I add hours, minutes or seconds to a date?

This example shows you how to add or substract hours, minutes or seconds to a date using the java.util.Calendar object.

package org.kodejava.example.util;

import java.util.Calendar;

public class DateAddHour {
    public static void main(String[] args) {
        //
        // Gets a calendar using the default time zone and locale. The
        // Calendar returned is based on the current time in the default
        // time zone with the default locale.
        //
        Calendar calendar = Calendar.getInstance();
        System.out.println("Original = " + calendar.getTime());

        //
        // Substract 2 hour from the current time
        //
        calendar.add(Calendar.HOUR, -2);

        //
        // Add 30 minutes to the calendar time
        //
        calendar.add(Calendar.MINUTE, 30);

        //
        // Add 300 seconds to the calendar time
        //
        calendar.add(Calendar.SECOND, 300);

        System.out.println("Updated  = " + calendar.getTime());
    }
}

Wayan Saryada

I am a programmer, a runner, an open water diver and currently living in the island of Bali, Indonesia. If you need help on Java programming you can hire me on Fiverr.

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