//Validation
         if (monthName != "January"
                 && monthName != "February"
                 && monthName != "March"
                 && monthName != "April"
                 && monthName != "May"
                 && monthName != "June"
                 && monthName != "July"
                 && monthName != "August"
                 && monthName != "September"
                 && monthName != "October"
                 && monthName != "November"
                 && monthName != "December") {
             throw new IllegalArgumentException("Month(): bad month name");
        }