Compare date time using before method of Java Calendar

/*
  Compare date time using before method of Java Calendar
  This example shows how to compare two calendar objects having different 
   date and time using
  before method of Java Calendar class.
*/
 
import java.util.Calendar;
 
public class CompareDateTimesUsingBefore {
 
  public static void main(String[] args) {
 
    //create first Calendar object
    Calendar old = Calendar.getInstance();
 
    //set it to some old date
    old.set(Calendar.YEAR, 1990);
 
    //create second Calendar object
    Calendar now = Calendar.getInstance();
 
    /*
     * To compare two different Calendar objects, use
     * boolean before(Caledar anotherCal) method.
     * 
     * If the first Calendar object's date and time is before 
     * anotherCal date and time, 
     * it returns true, false otherwise.
     */
 
     System.out.println("Is old before now ? : " + old.before(now));
  }
}
 
/*
Output would be
Is old before now ? : true
*/