import java.util.Calendar;
class FindDay {
/** Return the name of the given numeric week day */
public static String weekDayName(int weekDayNumber) {
switch (weekDayNumber) {
case Calendar.MONDAY: return "Δευτέρα";
case Calendar.TUESDAY: return "Τρίτη";
case Calendar.WEDNESDAY: return "Τετάρτη";
case Calendar.THURSDAY: return "Πέμπτη";
case Calendar.FRIDAY: return "Παρασκευή";
case Calendar.SATURDAY: return "Σάββατο";
case Calendar.SUNDAY: return "Κυριακή";
}
return null;
}
public static void main(String args[]) throws Exception {
// ...
}