import java.text.DateFormatSymbols;
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);
	int firstdayofweek = d.getFirstDayOfWeek();
	int indents = 0;
	do
	{
		indents++;
		d.add(DAY_OF_MONTH, 1);
		weekday = d.get(Calendar.DAY_OF_WEEK);
	}
	while(weekday!=d.getFirstDayOfWeek());

	String[] weekdayNAME = new DateFormatSymbols().getShortMonths();
	do
	{
		System.out.printf("%4s",weekdayNAME[weekday]);
		d.add(Calendar.DAY_OF_MONTH, 1);
		weekday = d.get(Calendar.DAY_OF_WEEK);
	}
	while(weekday!=d.getFirstDayOfWeek());

	weekday = d.get(Calendar.DAY_OF_WEEK);

	System.out.println();
	for(int i = 0;i < indents;i++)
		System.out.print("    ");

	d.set(Calendar.DAY_OF_MONTH, 1);
	do
	{
		int day = d.get(Calendar.DAY_OF_MONTH);
		System.out.printf("%3d",day);
		if(day == today)
			System.out.print("*");
		d.add(Calendar.DAY_OF_MONTH, 1);
		weekday = d.get(Calendar.DAY_OF_WEEK);
		if(weekday == d.getFirstDayOfWeek())
			System.out.println();
	}
	while(month == d.get(Calendar.MONTH));

	if(weekday != d.getFirstDayOfWeek()) System.out.println();
}
}

刚才没发好，重新发一下，这里面的Calendar.DAY_OF_MONTH    Calendar.DAY_OF_WEEK之类的提示无法解析

import java.util.Calendar;

你这是自己定义了一个类叫Calendar？  

public class Calendar {

public static void main(String[] args)
{

....

Calendar.DAY_OF_WEEK

然后你自己又用这个类的属性 DAY_OF_WEEK  他这些属性怎么会存在？   java.util.Calendar.DAY_OF_WEEK才行吧？

太感谢了，这么个小问题啊，刚学java没注意到这个类名的问题，当时就随便定义了个名字，没想到正好冲突了