计算21世纪的闰年个数import java.util.long l1=System.if(gc.long l2=Sys

package Date1216;

import java.util.GregorianCalendar;

/**
 * 计算并输出21世纪的闰年，计算程序的执行时间
 * @author Administrator
 *
 */
public class Runnian {
    public static void main(String[] args) {
        int count=0;
        GregorianCalendar gc=new GregorianCalendar();
        long l1=System.currentTimeMillis();
        for(int i=2000;i<2100;i++){
            if(gc.isLeapYear(i)){
                count++;
            }
        }
        long l2=System.currentTimeMillis();
        System.out.println(count);
        System.out.println(l2-l1);
    }

}