import java.util.Scanner;

public class MonthsName2 {

	public static void main(String[] args) {
		String mo;
		int days;
		Scanner input = new Scanner(System.in);
		
		System.out.print("Enter a month: ");
		mo = input.next();
		
		days = numDays(mo);
		
		System.out.println();
		if (days > 0) {
			System.out.println(mo + " has " + days + " days.");
		} else {
			System.out.println(mo + " is not a valid month");
		}
	}
	
	//-------------------------------------------------------
	// This method corrects bug of previous version
	// It returns zero when the parameter is not a valid month
	public static int numDays (String month) {
		int days;
		if (month.equals("April") || month.equals("June") || month.equals("September") || month.equals("November")) {
			days = 30;
		} else if (month.equals("February")) {
			days = 28;
		} else if (month.equals("January") || month.equals("March") || month.equals("May") || month.equals("July") ||
					month.equals("August") || month.equals("October") || month.equals("December")){
			days = 31;
		} else {
			days = 0;
		}
		return days;
	}

}