java编程--计算每年的2月有多山天

package cn.calendar;

import java.util.Calendar;

import java.util.Scanner;

import java.util.Set;

/*

*计算每年的2月有多少天

*

*

*

*/

public class Calendar02 {

        

        public static void main(String[] args) {

                

                

                Scanner dd=new Scanner(System.in);

                System.out.println("请输入你想查询的年份：");

                int year=dd.nextInt();

                Calendar c=Calendar.getInstance();

             c.set(year, 2,1);

             c.add(Calendar.DATE, -1);

             System.out.println("这一年2月有"+ c.get(Calendar.DATE)+"天");

                

                

        }

}