java 월을 입력받아 월수 출력

package test;

import java.util.Scanner;

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

        System.out.println("월을 입력해주세요");

        int[] a = {31,30,31,30,31,30,31,31,30,31,30,31};

        Scanner scanner = new Scanner(System.in);
        int month = scanner.nextInt();

        System.out.printf("%d 월은 %d일 입니다.",month,a[month-1]);


        scanner.close();



    }

}