使用日历的before方法比较日期时间

import java.util.Calendar;

 

public class Main {
/** from 
N o w J a v a . c o m - 时  代  Java**/

 

  public static void main(String[] args) {

    Calendar old = Calendar.getInstance();

   

    old.set(Calendar.YEAR, 1990);

   

    Calendar now = Calendar.getInstance();

     

    System.out.println("Is old before now ? : " + old.before(now));

  }

}