输入年份月份判断是平年还是闰年及这个月有多少天

import java.util.Scanner;

public class year {
    public static void main(String[] args) {
        System.out.println("请输入年份");
        Scanner sc = new Scanner(System.in);
        int s = sc.nextInt();
        System.out.println("请输入月份");
        Scanner sc1 = new Scanner(System.in);
        int v = sc.nextInt();
        if (s%4==0&&s%100!=0||s%400==0){
            System.out.println(s+"是闰年");
        }else {
            System.out.println(s+"是平年");
        }
        if (v ==1||v==3||v ==5||v==7||v ==8||v==10||v ==12){
            System.out.println(v+"是31天");
        }
        else if(v==4||v ==6||v==9||v ==11){
            System.out.println(v+"是30天");
         }else if(s%4==0&&s%100!=0&&v==2||s%400==0&&v==2){
            System.out.println(v+"是29天");
        }else{
            System.out.println(v+"是28天");
        }
    }


}