import java.util.Calendar; public class Main { public static void main(String[] args) { Calendar now = Calendar.getInstance(); System.out.println("Current date : " + (now.get(Calendar.MONTH) + 1) + "-" + now.get(Calendar.DATE) + "-" + now.get(Calendar.YEAR)); now = Calendar.getInstance(); now.add(Calendar.YEAR, -100); System.out.println("date before 100 years : " + (now.get(Calendar.MONTH) + 1) + "-" + now.get(Calendar.DATE) + "-" + now.get(Calendar.YEAR)); } }