Java小日历

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使用Java语言，生成如下所示小日历。

这里写图片描述

package HelloJava;import java.text.DateFormatSymbols;import java.util.Calendar;import java.util.GregorianCalendar;public class CalendarDemo {    public static void main(String[] args)  {        GregorianCalendar date=new GregorianCalendar();        int today=date.get(Calendar.DAY_OF_MONTH);        int month=date.get(Calendar.MONTH);        date.set(Calendar.DAY_OF_MONTH, 1);        int weekday=date.get(Calendar.DAY_OF_WEEK);        int firstDayOfWeek=date.getFirstDayOfWeek();        int indent=0;        while(weekday!=firstDayOfWeek){            indent++;            date.add(Calendar.DAY_OF_MONTH,-1);            weekday=date.get(Calendar.DAY_OF_WEEK);        }        String[] weekdayNames=new DateFormatSymbols().getShortWeekdays();        do        {            System.out.printf("%4s  ",weekdayNames[weekday]);            date.add(Calendar.DAY_OF_MONTH, 1);            weekday=date.get(Calendar.DAY_OF_WEEK);            }        while(weekday!=firstDayOfWeek);        System.out.println();        for(int i=1;i<=indent;i++)            System.out.print("  ");        date.set(Calendar.DAY_OF_MONTH, 1);        do        {            int day=date.get(Calendar.DAY_OF_MONTH);            System.out.printf("%3d", day);            if(day==today)                System.out.print("* ");            else                System.out.print("  ");            date.add(Calendar.DAY_OF_MONTH, 1);            weekday=date.get(Calendar.DAY_OF_WEEK);            if(weekday==firstDayOfWeek)                System.out.println();        }        while(date.get(Calendar.MONTH)==month);        if(weekday!=firstDayOfWeek)            System.out.println();    }   }

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