calendartest.java

java课程的资料以及实验的代码

package com.bluedot.exam.classandobject.calendar;

//CalendarTest.java
import java.util.*;

public class CalendarTest
{
    public void printCalendar()
    { 
        Calendar d = GregorianCalendar.getInstance(); //定义d作为当前日期
        int today = d.get(Calendar.DAY_OF_MONTH);
        int month = d.get(Calendar.MONTH);
        d.set(Calendar.DAY_OF_MONTH, 1);// 	设置当前日期d开始月份
        int weekday = d.get(Calendar.DAY_OF_WEEK);
        System.out.println("Sun Mon Tue Wed Thu Fri Sat"); //打印日历头
        for (int i = Calendar.SUNDAY; i < weekday; i++)
        {
            //          缩排日历
            System.out.print("    ");
        }

        do
        {
            int day = d.get(Calendar.DAY_OF_MONTH); // 打印天
            if (day < 10)
            {
                System.out.print(" ");
            }

            System.out.print(day);
            if (day == today)
            {
                // 做当前天的标记 *
                System.out.print("* ");
            }

            else
            {
                System.out.print("  ");
            }

            if (weekday == Calendar.SATURDAY)
            {
                // 逢星期六开始一个新的行
                System.out.println();
            }

            d.add(Calendar.DAY_OF_MONTH, 1); //增加 d 到下一天
            weekday = d.get(Calendar.DAY_OF_WEEK);
        } while (d.get(Calendar.MONTH) == month);
        if (weekday != Calendar.SUNDAY)
        {// 当d 是下个月的第一天退出循环
            System.out.println();
        }
    }

    public static void main(String[] args)
    {
        CalendarTest o = new CalendarTest();
        o.printCalendar();
    }
}