Switch...Case...break

import java.util.Scanner;


public class DaysInMoth {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int month;
        int year = 2014;
        int days = 0;
        
        System.out.print("일수를 알고 싶은 달을 입력하시오 : ");
        Scanner scan = new Scanner(System.in);
        month = scan.nextInt();
        
        switch(month) {
        case 1: case 3: case 5: case 7: case 8: case 10: case 12:
            days = 31;
            break;
        case 4: case 6: case 9: case 11:
            days = 30;
            break;
        case 2:
            days = 28;
            break;
        default:
                System.out.println("잘못된 값을 입력하셨습니다.");
                break;
        }
        
        System.out.println(month+"월의 날짜 수는 "+days+"일");
        
        }
}