import java.util.Calendar; public class Main { public static void main(String[] args) { Calendar now = Calendar.getInstance(); System.out.println("Current time : " + now.get(Calendar.HOUR_OF_DAY) + ":" + now.get(Calendar.MINUTE) + ":" + now.get(Calendar.SECOND)); now.add(Calendar.MINUTE, 20); System.out.println("New time after adding 20 minutes : " + now.get(Calendar.HOUR_OF_DAY) + ":" + now.get(Calendar.MINUTE) + ":" + now.get(Calendar.SECOND)); } }