java实现日历(某年的日历,某月的日历)用户完全自定义
用户可以自定义打印某一年的年历，即：把某一年的日历全部打印出来
如把2013年的年历打印出来如下：
january 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5
7 8 9 10 11 12
14 15 16 17 18 19
21 22 23 24 25 26
28 29 30 31
febuary 2013
---------------------------------------------
sun mon tue wed thu fri sat
2
4 5 6 7 8 9
11 12 13 14 15 16
18 19 20 21 22 23
25 26 27 28
march 2013
---------------------------------------------
sun mon tue wed thu fri sat
2
4 5 6 7 8 9
11 12 13 14 15 16
18 19 20 21 22 23
25 26 27 28 29 30
april 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5 6
8 9 10 11 12 13
15 16 17 18 19 20
22 23 24 25 26 27
29 30
may 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4
6 7 8 9 10 11
13 14 15 16 17 18
20 21 22 23 24 25
27 28 29 30 31
jun 2013
---------------------------------------------
sun mon tue wed thu fri sat
3 4 5 6 7 8
10 11 12 13 14 15
17 18 19 20 21 22
24 25 26 27 28 29
july 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5 6
8 9 10 11 12 13
15 16 17 18 19 20
22 23 24 25 26 27
29 30 31
august 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3
5 6 7 8 9 10
12 13 14 15 16 17
19 20 21 22 23 24
26 27 28 29 30 31
septermber 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5 6 7
9 10 11 12 13 14
16 17 18 19 20 21
23 24 25 26 27 28
30
october 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5
7 8 9 10 11 12
14 15 16 17 18 19
21 22 23 24 25 26
28 29 30 31
november 2013
---------------------------------------------
sun mon tue wed thu fri sat
2
4 5 6 7 8 9
11 12 13 14 15 16
18 19 20 21 22 23
25 26 27 28 29 30
december 2013
---------------------------------------------
sun mon tue wed thu fri sat
2 3 4 5 6 7
9 10 11 12 13 14
16 17 18 19 20 21
23 24 25 26 27 28
30 31
当然用户如果想单独打印某个月的日历，同样是可以实现的
如打印：2014年1月份的日历
日 一 二 三 四 五 六
2 3 4
6 7 8 9 10 11
13 14 15 16 17 18
20 21 22 23 24 25
27 28 29 30 31
用户还可以实现打印当前的月份的日历
今天是：2013-04-27，则当前月份的日历打印如下：
日 一 二 三 四 五 六
2 3 4 5 6
8 9 10 11 12 13
15 16 17 18 19 20
22 23 24 25 26 :)27(:
29 30
是的，你没有看错，在27的那里有一个标志，表示是当天的日期.....
下面进入代码部分：
========================================================
代码部分：
========================================================
/uuuuuu_test/src/com/b510/date/hongtendate.java
/**
*
*/
package com.b510.date;
import java.text.simpledateformat;
import java.util.calendar;
import java.util.date;
import java.util.gregoriancalendar;
/**
* 一个日期处理类，在该类中，构造函数<code>hongtendate()</code>,系统会默认设置年份为当年<br>
* 而<code>hongtendate(int year)</code>,则可以自定义年份<br>
*
* <pre>
* hongtendate date = new hongtendate();
* </pre>
*
* or<br>
*
* <pre>
* hongtendate hd = new hongtendate(2014);
* </pre>
*
* 调用<code>printcalendar()</code>可以打印一年的日期<br>
* 调用<code>printcurrentmonth()</code>可以打印当前月的日期<br>
* ,当然，你也可以调用<br>
* <code>printmonthofyear()</code>设置一个参数，进行打印某个月的日期<br>
* 这里提供一些参考方案:<br>
*
* <pre>
* // 无参数，系统默认去当前年份
* hongtendate date = new hongtendate();
* date.printcalendar();
* date.printcurrentmonth();
* date.printmonthofyear(4);
* </pre>
*
* or<br>
*
* <pre>
* // 设置为2014年
* hongtendate hd = new hongtendate(2014);
* hd.printcurrentmonth();
* hd.printmonthofyear(1);
* </pre>
*
* @date 2013-4-27
* @author hongten
*
*/
public class hongtendate {
// months
// ============================================
public static final string january = "january";
public static final string febuary = "febuary";
public static final string march = "march";
public static final string april = "april";
public static final string may = "may";
public static final string jun = "jun";
public static final string july = "july";
public static final string august = "august";
public static final string septermber = "septermber";
public static final string october = "october";
public static final string november = "november";
public static final string december = "december";
/**
* 年份
*/
private int year;
/**
* 一月一日星期几(eg:2013-01-01-->星期二,所以<code>whatdayonjanuaryone = 2;</code>)
*/
private int whatdayonjanuaryone;
// main
// ======================================
public static void main(string[] args) throws exception {
// 无参数，系统默认去当前年份
hongtendate date = new hongtendate();
// date.printcalendar();
date.printcurrentmonth();
// date.printmonthofyear(4);
// 设置为2014年
hongtendate hd = new hongtendate(2014);
// hd.printcurrentmonth();
// hd.printmonthofyear(1);
}
// 无参数，系统默认去当前年份
public hongtendate() {
calendar cal = calendar.getinstance();
this.year = cal.get(calendar.year);
try {
setwhatdayonjanuaryone(getjanuaryone(year));
} catch (exception e) {
e.printstacktrace();
}
}
// 有参数，设置年份
public hongtendate(int year) {
this.year = year;
try {
setwhatdayonjanuaryone(getjanuaryone(year));
} catch (exception e) {
e.printstacktrace();
}
}
/**
* 打印某个月的所有日期
*
* @param mon
* 月份
* @throws exception
*/
public void printmonthofyear(int mon) throws exception {
if (mon < 1 || mon > 12) {
system.out.println("你输入的月份[" + mon + "]不对，请检查在进行....");
return;
}
gregoriancalendar now = new gregoriancalendar();
// 获得一个date对象
simpledateformat sdf = new simpledateformat("yyyy-mm-dd");
date date = sdf.parse(year + "-" + mon + "-01");
// 设置当前时间
now.settime(date);
// 从日期中取得当前的月
int month = now.get(calendar.month);
// 设置now的日期为1
now.set(calendar.day_of_month, 1);
// 得到now是一周的第几天
int week = now.get(calendar.day_of_week);
// 打印日历头部标示
system.out.println("日\t一\t二\t三\t四\t五\t六");
// 打印当前日期前面的空格
for (int i = calendar.sunday; i < week; i++) {
system.out.print("\t");
}
// 打印日历主体
while (now.get(calendar.month) == month) {
int day = now.get(calendar.day_of_month);
// 对输出的日历进行对齐，小于10的加上一个空格
if (day < 10) {
system.out.print(" " + day + "\t");
} else {
system.out.print("" + day + "\t");
}
// 如果是周六，进行换行
if (week == calendar.saturday) {
system.out.println();
}
// 每次输出日期后，将日期增加一天
now.add(calendar.day_of_month, 1);
// 重新获得一周的第几天
week = now.get(calendar.day_of_week);
}
}
/**
* 打印当前月的所有日期，这个不会因用户设置的年份而改变
*/
public void printcurrentmonth() {
gregoriancalendar now = new gregoriancalendar();
// 获得一个date对象
date date = new date();
// 设置当前时间
now.settime(date);
// 从日期中取得当前的日
int today = now.get(calendar.day_of_month);
// 从日期中取得当前的月
int month = now.get(calendar.month);
// 设置now的日期为1
now.set(calendar.day_of_month, 1);
// 得到now是一周的第几天
int week = now.get(calendar.day_of_week);
// 打印日历头部标示
system.out.println("日\t一\t二\t三\t四\t五\t六");
// 打印当前日期前面的空格
for (int i = calendar.sunday; i < week; i++) {
system.out.print("\t");
}
// 打印日历主体
while (now.get(calendar.month) == month) {
int day = now.get(calendar.day_of_month);
// 对输出的日历进行对齐，小于10的加上一个空格
if (day < 10) {
// 如果是当前日期，加上标示
if (day == today) {
system.out.print(":)" + day + "(:\t");
} else {
system.out.print(" " + day + "\t");
}
} else {
// 如果是当前日期，加上标示
if (day == today) {
system.out.print(":)" + day + "(:\t");
} else {
system.out.print("" + day + "\t");
}
}
// 如果是周六，进行换行
if (week == calendar.saturday) {
system.out.println();
}
// 每次输出日期后，将日期增加一天
now.add(calendar.day_of_month, 1);
// 重新获得一周的第几天
week = now.get(calendar.day_of_week);
}
}
/**
* 获取year这一年的一月一号是星期几
*
* @param year
* 年份
* @return
* @throws exception
*/
public int getjanuaryone(int year) throws exception {
int[] weekdays = { 0, 1, 2, 3, 4, 5, 6 };
calendar cal = calendar.getinstance();
simpledateformat sdf = new simpledateformat("yyyy-mm-dd");
date dt = sdf.parse(year + "-01-01");
cal.settime(dt);
int w = cal.get(calendar.day_of_week) - 1;
if (w < 0)
w = 0;
return weekdays[w];
}
/**
* 打印一年的所有月份
*/
public void printcalendar() {
for (int i = 1; i <= 12; i++) {
string month = getmonth(i);
printtitle(month);
// 打印有31天的月份
if (i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12) {
print31();
}
// 打印有30天的月份
else if (i == 4 || i == 6 || i == 9 || i == 11) {
print30();
}
// 打印二月份
else if (i == 2) {
printfebuary();
}
system.out.println();
}
}
// 打印格式
// ============================================== start
/**
* 打印二月份，每一年的二月份可能不相同，所以要单独处理
*/
protected void printfebuary() {
if (this.year % 4 == 0) {
// 闰年
printleapyear();
} else {
// 平年
printnonleapyear();
}
}
/**
* 闰年二月份打印格式
*/
private void printleapyear() {
for (int j = 1; j <= 29; j++) {
string tmp = "";
if (j == 1) {
for (int k = 1; k <= this.whatdayonjanuaryone % 7; k++) {
tmp = tmp + " ";
}
tmp = tmp + " " + j + " ";
if (this.whatdayonjanuaryone == 6) {
system.out.println(tmp);
} else {
system.out.print(tmp);
}
} else if (j > 1 && j < 29) {
if ((this.whatdayonjanuaryone + j) % 7 == 0) {
system.out.println(" " + j);
} else {
if (j < 10) {
system.out.print(" " + j + " ");
} else {
system.out.print(" " + j + " ");
}
}
} else if (j == 29) {
system.out.println(" " + j);
this.whatdayonjanuaryone = ((this.whatdayonjanuaryone + j) % 7);
}
}
}
/**
* 打印平年二月份格式
*/
private void printnonleapyear() {
for (int j = 1; j <= 28; j++) {
string tmp = "";
if (j == 1) {
for (int k = 1; k <= this.whatdayonjanuaryone % 7; k++) {
tmp = tmp + " ";
}
tmp = tmp + " " + j + " ";
if (this.whatdayonjanuaryone == 6) {
system.out.println(tmp);
} else {
system.out.print(tmp);
}
} else if (j > 1 && j < 28) {
if ((this.whatdayonjanuaryone + j) % 7 == 0) {
system.out.println(" " + j);
} else {
if (j < 10) {
system.out.print(" " + j + " ");
} else {
system.out.print(" " + j + " ");
}
}
} else if (j == 28) {
system.out.println(" " + j);
this.whatdayonjanuaryone = ((this.whatdayonjanuaryone + j) % 7);
}
}
}
/**
* 打印有30天的月份
*/
protected void print30() {
for (int j = 1; j <= 30; j++) {
string tmp = "";
if (j == 1) {
for (int k = 1; k <= this.whatdayonjanuaryone % 7; k++) {
tmp = tmp + " ";
}
tmp = tmp + " " + j + " ";
if (this.whatdayonjanuaryone == 6) {
system.out.println(tmp);
} else {
system.out.print(tmp);
}
} else if (j > 1 && j < 30) {
if ((this.whatdayonjanuaryone + j) % 7 == 0) {
system.out.println(" " + j);
} else {
if (j < 10) {
system.out.print(" " + j + " ");
} else {
system.out.print(" " + j + " ");
}
}
} else if (j == 30) {
system.out.println(" " + j);
this.whatdayonjanuaryone = ((this.whatdayonjanuaryone + j) % 7);
}
}
}
/**
* 打印有31天的月份
*/
protected void print31() {
for (int j = 1; j <= 31; j++) {
string tmp = "";
if (j == 1) {
for (int k = 1; k <= this.whatdayonjanuaryone % 7; k++) {
tmp = tmp + " ";
}
tmp = tmp + " " + j + " ";
if (this.whatdayonjanuaryone == 6) {
system.out.println(tmp);
} else {
system.out.print(tmp);
}
} else if (j > 1 && j < 31) {
if ((this.whatdayonjanuaryone + j) % 7 == 0) {
system.out.println(" " + j);
} else {
if (j < 10) {
system.out.print(" " + j + " ");
} else {
system.out.print(" " + j + " ");
}
}
} else if (j == 31) {
system.out.println(" " + j);
this.whatdayonjanuaryone = ((this.whatdayonjanuaryone + j) % 7);
}
}
}
/**
* 打印每个月的标题
*
* @param month
*/
protected void printtitle(string month) {
system.out.println(" " + month + " " + this.year + " ");
system.out.println("---------------------------------------------");
system.out.println(" sun mon tue wed thu fri sat");
}
// 打印格式
// ============================================== end
/**
* 获取月份的英文名称
*
* @param m
* 月份的数字表示
* @return
*/
public string getmonth(int m) {
string month = "";
switch (m) {
case 1:
month = january;
break;
case 2:
month = febuary;
break;
case 3:
month = march;
break;
case 4:
month = april;
break;
case 5:
month = may;
break;
case 6:
month = jun;
break;
case 7:
month = july;
break;
case 8:
month = august;
break;
case 9:
month = septermber;
break;
case 10:
month = october;
break;
case 11:
month = november;
break;
case 12:
month = december;
break;
}
return month;
}
public int getyear() {
return year;
}
public void setyear(int year) {
this.year = year;
}
public int getwhatdayonjanuaryone() {
return whatdayonjanuaryone;
}
public void setwhatdayonjanuaryone(int whatdayonjanuaryone) {
this.whatdayonjanuaryone = whatdayonjanuaryone;
}
}