Calender of the current month

import java.util.*;

public class CalendarExample
     {
     
     public static void main(String []args)
         {
         //Construct new calendar
         
         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(Calendar.DAY_OF_WEEK);
             
         }
         
         while (d.get(Calendar.MONTH) == month);
         
         if (weekday != Calendar.SUNDAY)
         System.out.println();
         
     }
}