import java.io.*;

class DateMain {

  public static void main (String [] args) {

    Date d1, d2, d3;

    d1 = new Date ();

    d2 = new Date (31, 12, 1999);

    d3 = new Date (1, 1, 2000);

    System.out.print ("d1: ");
    System.out.println (d1.format ());
    System.out.print ("d2: ");
    System.out.println (d2.format ());
    System.out.print ("d3: ");
    System.out.println (d3.format ());
    System.out.print ("\n");

    System.out.print ("d2 < d1? ");
    System.out.println (d2.lessThan (d1));

    System.out.print ("d2 < d3? ");
    System.out.println (d2.lessThan (d3));
    System.out.print ("\n");

    d2.nextDay ();
    System.out.print ("d2: ");
    System.out.println (d2.format ());

    System.out.print ("d2 == d3? ");
    System.out.println (d2.equals (d3));
  }
}