import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import java.util.GregorianCalendar;

public class CalendarTest {
    public static void main(String[] args) {
        GregorianCalendar calendar=new GregorianCalendar();
        int today=calendar.get(Calendar.DAY_OF_MONTH);
        System.out.println(today);
        int month=calendar.get(Calendar.MONTH);
        System.out.println(month);
        calendar.set(Calendar.DAY_OF_MONTH,1);
        int weekday=calendar.get(Calendar.DAY_OF_MONTH);
        int firstDayOfWeek=calendar.getFirstDayOfWeek();
        int indent=0;
        while (weekday!=firstDayOfWeek){
            indent++;
            calendar.add(Calendar.DAY_OF_MONTH,-1);
            weekday=calendar.get(Calendar.DAY_OF_WEEK);
        }
        String[] weekDayNames=new DateFormatSymbols().getShortWeekdays();
        do {
            System.out.printf("%4s",weekDayNames[weekday]);
            calendar.add(Calendar.DAY_OF_MONTH,1);
            weekday=calendar.get(Calendar.DAY_OF_WEEK);
        }
    }
}