Java Calendar setTimeInMillis方法

package com.codingdict;

import java.util.*;

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

      // create a calendar
      Calendar cal = Calendar.getInstance();

      // get the time in milliseconds
      System.out.println("Current time is :" + cal.getTime());

      // set time to 5000 ms after january 1 1970
      cal.setTimeInMillis(5000);

      // print the new time
      System.out.println("After setting Time:  " + cal.getTime());
   }
}