标签:日历
package com.xiaolu;
import java.text.DateFormatSymbols;
import java.util.*;
/**
* @version 1.4 2007-04-07
* @author Wusicheng
*/
public class HelloWorld {
public static void main(String[] args)
{
//construct d as current date
GregorianCalendar d = new GregorianCalendar();
int today=d.get(Calendar.DAY_OF_MONTH);
int month=d.get(Calendar.MONTH);
//set d to start date of the month
d.set(Calendar.DAY_OF_MONTH,1);
int weekday=d.get(Calendar.DAY_OF_WEEK);
//get first day of week(Sunday on U.S.)
int firstDayOfWeek=d.getFirstDayOfWeek();
//determine the required indentation for the first line
int indent=0;
while(weekday!=firstDayOfWeek)
{
indent++;
d.add(Calendar.DAY_OF_MONTH, -1);
weekday=d.get(Calendar.DAY_OF_WEEK);
}
//print weekday names用于输出日历表
String[] weekdayNames=new DateFormatSymbols().getShortWeekdays();
do
{
System.out.printf("%4s",new Object[]{weekdayNames[weekday]});
d.add(Calendar.DAY_OF_MONTH,1);
weekday=d.get(Calendar.DAY_OF_WEEK);//output the day form Sunday to xinqiliu
}
while(weekday!=firstDayOfWeek);
System.out.println();
for(int i=1;i<=indent;i++)
System.out.print(" ");//make ture the first day
d.set(Calendar.DAY_OF_MONTH, 1);
do
{
//print day
int day=d.get(Calendar.DAY_OF_MONTH);
System.out.printf("%3d",day);
//mark current day with*
if(day==today)System.out.print("*");
else System.out.print(" ");
//advance d to the next_day
d.add(Calendar.DAY_OF_MONTH,1);
weekday=d.get(Calendar.DAY_OF_WEEK);
//start a new line at the start of the week
if(weekday==firstDayOfWeek)System.out.println();
}
while (d.get(Calendar.MONTH)==month);
//the loop exits when d is day 1 of the next month
//print final end of line if necessary
if(weekday!=firstDayOfWeek)System.out.println("");
}
}
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标签:日历
原文地址:http://wusichegn.blog.51cto.com/10464246/1668859