/**
 * 生成日歷程序(界面)
 * */

package com.lianjiping.demoa;

import java.util.*;

public class DateD {
    public static void main(String[] args) {
        GregorianCalendar dc = new GregorianCalendar();
        int today = dc.get(Calendar.DAY_OF_MONTH);
        int month = dc.get(Calendar.MONTH);
        dc.set(Calendar.DAY_OF_MONTH, 1);
        int weekday = dc.get(Calendar.DAY_OF_WEEK);

        System.out.println("sun mon tue wed thu fri liu");
        for (int i = Calendar.SUNDAY; i < weekday; i++)
            System.out.print("");
        do {
            int day = dc.get(Calendar.DAY_OF_MONTH);
            if (day == 1 && weekday != 7) {
                for (int x = 0; x < 4 * (weekday - 1); x++) {
                    System.out.print(" ");
                }
            }

            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();

            dc.add(Calendar.DAY_OF_MONTH, 1);
            weekday = dc.get(Calendar.DAY_OF_WEEK);
        } while (dc.get(Calendar.MONTH) == month);
    }
}