Calculation of the calendar for a given month

[Analeea]

The point is, it doesn't seem right in the first week. It's all crazy. Any month. I've been asking for years and months. I don't understand the problem. Help me.

import java.text.DateFormatSymbols;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
public class JavaApplication1 {

public static void main(String[] args){

Date time = new Date();

System.out.println(time);

GregorianCalendar now = new GregorianCalendar();

int today = now.get(Calendar.DAY_OF_MONTH);

int month = now.get(Calendar.MONTH);

now.set(Calendar.DAY_OF_MONTH, 1);

int weekday = now.get(Calendar.DAY_OF_WEEK);

int FirstDayOfWeek = now.getFirstDayOfWeek();

int in = 0;

while (weekday != FirstDayOfWeek){

in++; //счетчик

now.add(Calendar.DAY_OF_MONTH, -1);

weekday = now.get(Calendar.DAY_OF_WEEK);

}

String [] WeekDayNames = new DateFormatSymbols().getShortWeekdays();

do{

System.out.printf("%4s", WeekDayNames[weekday]);

now.add(Calendar.DAY_OF_MONTH, 1);

weekday = now.get(Calendar.DAY_OF_WEEK);

}while(weekday != FirstDayOfWeek);

System.out.println();

for(int i = 1; i<=in; i++)

System.out.print(" ");//тут выводит пробелы на первой неделе месяця
now.set(Calendar.DAY_OF_MONTH, 1);
do{
    int day = now.get(Calendar.DAY_OF_MONTH);
    System.out.printf("%3d", day);
    if(day == today)
        System.out.print("*");
    else
        System.out.print(" ");
    now.add(Calendar.DAY_OF_MONTH, 1);
    weekday = now.get(Calendar.DAY_OF_WEEK);
    if (weekday == FirstDayOfWeek)
        System.out.println();
}
while(now.get(Calendar.MONTH) == month);
if(weekday != FirstDayOfWeek)
    System.out.println();

}

♪

[obi]

In you in - the difference between the first day of the week and the beginning of the month. Each day in the calendar takes 3 positions per number (format "%3d"and one position on the marker of the current day " " or "*")

That's why you have to take four breaks in the cycle for one day.