import java.util.*; public class Main { public static void main(String[] args) throws Exception { Date d1 = new Date(); Calendar cl = Calendar. getInstance(); cl.setTime(d1); System.out.println("today is "+ d1.toString()); cl. roll(Calendar.MONTH, 100); System.out.println("date after a month will be " + cl.getTime().toString() ); cl. roll(Calendar.HOUR, 70); System.out.println("date after 7 hrs will be "+ cl.getTime().toString() ); } }