Java tutorial
import java.util.Calendar; public class Main { public static void main(String[] args) { Calendar cal = Calendar.getInstance(); System.out.println("The current date is : " + cal.getTime()); // add 20 days to the calendar cal.add(Calendar.DATE, 20); System.out.println("20 days later: " + cal.getTime()); // subtract 2 months from the calendar cal.add(Calendar.MONTH, -2); System.out.println("2 months ago: " + cal.getTime()); // subtract 5 year from the calendar cal.add(Calendar.YEAR, -5); System.out.println("5 years ago: " + cal.getTime()); } }