public static void main(String[] args) {
int month = calendar.get(MyCalendar.MONTH) + 1;
int year = calendar.get(MyCalendar.YEAR);
if (args.length > 2) System.out.println("Usage java Exercise14_10 month year");
else if (args.length == 2) {
// use user-defined month and year
year = Integer.parseInt(args[1]);
month = Integer.parseInt(args[0]);
calendar.set(Calendar.YEAR, year);
calendar.set(Calendar.MONTH, month - 1);
} else if (args.length == 1) {
// use user-defined month for the current year
month = Integer.parseInt(args[0]);
calendar.set(Calendar.MONTH, month - 1);
}
// set date to the first day in a month
calendar.set(Calendar.DATE, 1);
// print calendar for the month
printMonth(year, month);
}
static void printMonth(int year, int month) {
// get start day of the week for the first date in the month
int startDay = getStartDay();
// get number of days in the month
int numOfDaysInMonth = calendar.daysInMonth();
// print headings
printMonthTitle(year, month);
// print body
printMonthBody(startDay, numOfDaysInMonth);
}
static void printMonthTitle(int year, int month) {
System.out.println(" " + calendar.getMonthName() + ", " + year);
System.out.println("-----------------------------");
System.out.println(" Sun Mon Tue Wed Thu Fri Sat");
}
static int getStartDay() {
return calendar.get(Calendar.DAY_OF_WEEK);
}