Java日历Calendar before方法

package com.codingdict;

import java.util.Calendar;

public class CalendarDemo {
   public static void main(String[] args) {

      // create calendar objects.
      Calendar cal = Calendar.getInstance();
      Calendar past = Calendar.getInstance();

      // print the current date
      System.out.println("Current date: " + cal.getTime());

      // change year in past calendar
      past.set(Calendar.YEAR, 2006);
      System.out.println("Year is " + past.get(Calendar.YEAR));

      // check if calendar date is before current date
      System.out.println("Before current date:" + cal.before(past));
   }
}