Why calendar don't work ?!!

Question

i start learning java last week , so any one can help and tell me why this program don't work
import java.util.*;
public class Calendar
public static void main(String[] args)
     GregorianCalendar d= new GregorianCalendar();
     int today = d.get(Calendar.DAY_OF_MONTH);
     int month = d.get(Calendar.MONTH);
     d.set(Calendar.DAY_OF_MONTH, 1);
     int weekday = d.get(Calendar.DAY_OF_WEEK);     
     System.out.println("Sun Mon Tue Wed Thu Fri Sat");
     for (int i=Calendar.SUNDAY; i<weekday; i++)
     System.out.print(" ");
     do
     int day = d.get(Calendar.DAY_OF_MONTH);
     if (day<10) System.out.print(" ");
     System.out.print(day);
     if (day==today)
          System.out.print("* ");
     else
          System.out.print(" ");
     if (weekday==Calendar.SATURDAY) System.out.println();
     d.add(Calendar.DAY_OF_MONTH, 1);
     weekday = d.get(Calender.DAY_OF_WEEK);
     while (d.get(Calendar.MONTH)==month);
}

Answer 1

The class name "Calendar" is already used by Java.
Rename your class "MyCalendar" or something else and it almost all works.
Near the end of your code, you misspelled "Calendar" (you typed "Calender").
After making those two changes, your code compiled and ran for me.
Good luck!