今天给各位分享用java编写日历系统的知识，其中也会对日历的设计与实现Java课程设计进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
1、怎么用java写日历2、Java编写程序，输入年份，输出本年度各月份日历3、java万年历程序如何编写？4、用java图形用户界面实现: 编写一个日历程序，能实现显示日历等简单功能。5、JAVA编写日历
怎么用java写日历
以下是两个类，请楼主分别存成两个java文件:
其中
MainFrame.java是显示日历程序，Clock.java是日历计算程序。编译后运行MainFrame这个类即可。
1.MainFrame.java
—
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Date;
import java.util.Calendar;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class MainFrame extends JFrame {
/** *//**
*
*/
private static final long serialVersionUID = 1L;
JPanel panel = new JPanel(new BorderLayout());
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel(new GridLayout(7, 7));
JPanel panel3 = new JPanel();
JLabel[] label = new JLabel[49];
JLabel y_label = new JLabel(“年份”);
JLabel m_label = new JLabel(“月份”);
JComboBox com1 = new JComboBox();
JComboBox com2 = new JComboBox();
int re_year, re_month;
int x_size, y_size;
String year_num;
Calendar now = Calendar.getInstance(); // 实例化Calendar
MainFrame() {
super(“万年历”);
setSize(300, 350);
x_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth());
y_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getHeight());
setLocation((x_size – 300) / 2, (y_size – 350) / 2);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel1.add(y_label);
panel1.add(com1);
panel1.add(m_label);
panel1.add(com2);
for (int i = 0; i 49; i++) {
label[i] = new JLabel(“”, JLabel.CENTER);// 将显示的字符设置为居中
panel2.add(label[i]);
}
panel3.add(new Clock(this));
panel.add(panel1, BorderLayout.NORTH);
panel.add(panel2, BorderLayout.CENTER);
panel.add(panel3, BorderLayout.SOUTH);
panel.setBackground(Color.white);
panel1.setBackground(Color.white);
panel2.setBackground(Color.white);
panel3.setBackground(Color.white);
Init();
com1.addActionListener(new ClockAction());
com2.addActionListener(new ClockAction());
setContentPane(panel);
setVisible(true);
setResizable(false);
}
class ClockAction implements ActionListener {
public void actionPerformed(ActionEvent arg0) {
int c_year, c_month, c_week;
c_year = Integer.parseInt(com1.getSelectedItem().toString()); // 得到当前所选年份
c_month = Integer.parseInt(com2.getSelectedItem().toString()) – 1; // 得到当前月份，并减1,计算机中的月为0－11
c_week = use(c_year, c_month); // 调用函数use，得到星期几
Resetday(c_week, c_year, c_month); // 调用函数Resetday
}
}
public void Init() {
int year, month_num, first_day_num;
String log[] = { “日”, “一”, “二”, “三”, “四”, “五”, “六” };
for (int i = 0; i 7; i++) {
label[i].setText(log[i]);
}
for (int i = 0; i 49; i = i + 7) {
label[i].setForeground(Color.red); // 将星期日的日期设置为红色
}
for (int i = 6; i 49; i = i + 7) {
label[i].setForeground(Color.green);// 将星期六的日期设置为绿色
}
for (int i = 1; i 10000; i++) {
com1.addItem(“” + i);
}
for (int i = 1; i 13; i++) {
com2.addItem(“” + i);
}
month_num = (int) (now.get(Calendar.MONTH)); // 得到当前时间的月份
year = (int) (now.get(Calendar.YEAR)); // 得到当前时间的年份
com1.setSelectedIndex(year – 1); // 设置下拉列表显示为当前年
com2.setSelectedIndex(month_num); // 设置下拉列表显示为当前月
first_day_num = use(year, month_num);
Resetday(first_day_num, year, month_num);
}
public int use(int reyear, int remonth) {
int week_num;
now.set(reyear, remonth, 1); // 设置时间为所要查询的年月的第一天
week_num = (int) (now.get(Calendar.DAY_OF_WEEK));// 得到第一天的星期
return week_num;
}
@SuppressWarnings(“deprecation”)
public void Resetday(int week_log, int year_log, int month_log) {
int month_day_score; // 存储月份的天数
int count;
month_day_score = 0;
count = 1;
Date date = new Date(year_log, month_log + 1, 1); // now
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.MONTH, -1); // 前个月
month_day_score = cal.getActualMaximum(Calendar.DAY_OF_MONTH);// 最后一天
for (int i = 7; i 49; i++) { // 初始化标签
label[i].setText(“”);
}
week_log = week_log + 6; // 将星期数加6，使显示正确
month_day_score = month_day_score + week_log;
for (int i = week_log; i month_day_score; i++, count++) {
label[i].setText(count + “”);
}
}
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
new MainFrame();
}
}
2.Clock.java
—–
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Date;
import java.util.Calendar;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
//显示时间的类：Clock
/** *//**
* Clock.java
* Summary 数字时间显示
* Created on
* @author
* remark
*/
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Calendar;
class Clock extends Canvas implements Runnable{
/** *//**
*
*/
private static final long serialVersionUID = 3660124045489727166L;
MainFrame mf;
Thread t;
String time;
public Clock(MainFrame mf){
this.mf=mf;
setSize(280,40);
setBackground(Color.white);
t=new Thread(this); //实例化线程
t.start(); //调用线程
}
public void run(){
while(true){
try{
Thread.sleep(1000); //休眠1秒钟
}catch(InterruptedException e){
System.out.println(“异常”);
}
this.repaint(100);
}
}
public void paint(Graphics g){
Font f=new Font(“宋体”,Font.BOLD,16);
SimpleDateFormat SDF=new SimpleDateFormat(“yyyy’年’MM’月’dd’日’HH:mm:ss”);//格式化时间显示类型
Calendar now=Calendar.getInstance();
time=SDF.format(now.getTime()); //得到当前日期和时间
g.setFont(f);
g.setColor(Color.orange);
g.drawString(time,45,25);
}
}
Java编写程序，输入年份，输出本年度各月份日历
写了个简明的，
import java.util.Calendar;
import java.util.Scanner;
public class Test {
static public void main(String 参数[]){
Calendar c = Calendar.getInstance();
Scanner sc = new Scanner(System.in);
System.out.println(“请输入年份：”);
int year= sc.nextInt();
c.set(Calendar.YEAR, year);
c.set(Calendar.MONTH, Calendar.JANUARY);
c.set(Calendar.DAY_OF_MONTH, 1);
while(c.get(Calendar.YEAR)==year){
int wday=c.get(Calendar.DAY_OF_WEEK);
int mday=c.get(Calendar.DAY_OF_MONTH);
if(mday==1){
System.out.println(“\n日\t一\t二\t三\t四\t五\t六\t第”+(c.get(Calendar.MONTH)+1)+”月”);
System.out.println(“—————————————————“);
for(int i=0;iwday-1;i++) System.out.print(” \t”);
}
System.out.print(mday+”\t”);
if(wday==7) System.out.println();
c.add(Calendar.DAY_OF_YEAR, 1);
}
}
}
=======
请输入年份：
2012
日一二三四五六第1月
—————————————————
1234567
891011121314
15161718192021
22232425262728
293031
日一二三四五六第2月
—————————————————
1234
567891011
12131415161718
19202122232425
26272829
日一二三四五六第3月
—————————————————
123
45678910
11121314151617
18192021222324
25262728293031
日一二三四五六第4月
—————————————————
1234567
891011121314
15161718192021
22232425262728
2930
日一二三四五六第5月
—————————————————
12345
6789101112
13141516171819
20212223242526
2728293031
日一二三四五六第6月
—————————————————
12
3456789
10111213141516
17181920212223
24252627282930
日一二三四五六第7月
—————————————————
1234567
891011121314
15161718192021
22232425262728
293031
日一二三四五六第8月
—————————————————
1234
567891011
12131415161718
19202122232425
262728293031
日一二三四五六第9月
—————————————————
1
2345678
9101112131415
16171819202122
23242526272829
30
日一二三四五六第10月
—————————————————
123456
78910111213
14151617181920
21222324252627
28293031
日一二三四五六第11月
—————————————————
123
45678910
11121314151617
18192021222324
252627282930
日一二三四五六第12月
—————————————————
1
2345678
9101112131415
16171819202122
23242526272829
3031
java万年历程序如何编写？
package calendar;
import java.applet.Applet;
import java.awt.*;
import java.util.*;
public class CalendarApplet extends Applet{
private static final long serialVersionUID = 1L;
static final int TOP = 70; //顶端距离
static final int CELLWIDTH=50,CELLHEIGHT = 30; //单元格尺寸
static final int MARGIN = 3; //边界距离
static final int FEBRUARY = 1;
TextField tfYear = new TextField(“2004”, 5); //显示年份的文本域
Choice monthChoice = new Choice(); //月份选择下拉框
Button btUpdate = new Button(“更新”); //更新按钮
GregorianCalendar calendar=new GregorianCalendar(); //日历对象
Font smallFont = new Font(“TimesRoman”, Font.PLAIN, 15); //显示小字体
Font bigFont = new Font(“TimesRoman”, Font.BOLD, 50); //显示大字体
String days[] = {“星期日”, “星期一”, “星期二”, “星期三”,”星期四”, “星期五”, “星期六”};
String months[] = {“一月”, “二月”, “三月”, “四月”,”五月”, “六月”, “七月”, “八月”, “九月”,”十月”, “十一月”, “十二月”};
int daysInMonth[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //每个月的天数
int searchMonth,searchYear; //查询的年份及月份
public void init(){
setBackground(Color.white); //设置背景颜色
searchMonth = calendar.get(Calendar.MONTH); //得到系统年份
searchYear = calendar.get(Calendar.YEAR);//得到系统月份
add(new Label(” 年:”)); //增加组件到Applet
tfYear.setText(String.valueOf(searchYear)); //设置文本域文字
add(tfYear);
add(new Label(” 月:”));
setSize(360,230);
monthChoice.setFont(smallFont); //设置月份选择下拉框的显示字体
for (int i = 0; i 12; i++) {
monthChoice.add(months[i]); //增加下拉框选项
}
monthChoice.select(searchMonth); //设置下拉框当前选择项
add(monthChoice);
add(btUpdate);
int componentCount=this.getComponentCount(); //得到Applet中的组件数量
for (int i=0;icomponentCount;i++){
getComponent(i).setFont(smallFont); //设置所有组件的显示字体
}
}
public void paint(Graphics g){
FontMetrics fontMetric; //显示字体的FontMetrics对象
int fontAscent;
int dayPos;
int totalWidth, totalHeight; //总的宽度,高度
int numRows; //行数
int xNum, yNum; //水平和垂直方向单元格数量
int numDays;
String dayStr; //显示天数字符串
g.setColor(Color.lightGray); //设置当前颜色
g.setFont(bigFont); //设置当前使用字体
g.drawString(searchYear+”年”,60,TOP+70); //绘制字符串
g.drawString((searchMonth+1)+”月”,200,TOP+130);
g.setColor(Color.black);
g.setFont(smallFont);
fontMetric = g.getFontMetrics(); //获取变量初值
fontAscent = fontMetric.getAscent();
dayPos = TOP + fontAscent / 2;
totalWidth = 7 * CELLWIDTH; //得到总的表格宽度
for (int i = 0; i 7; i++) {
g.drawString(days[i], (CELLWIDTH-fontMetric.stringWidth(days[i]))/2 + i*CELLWIDTH,dayPos-20); //绘制表格标题栏
}
numRows = getNumberRows(searchYear, searchMonth); //计算需要的行的数量
totalHeight = numRows * CELLHEIGHT; //得到总的表格高度
for (int i = 0; i = totalWidth; i += CELLWIDTH) {
g.drawLine(i, TOP , i, TOP+ totalHeight); //绘制表格线
}
for (int i = 0, j = TOP ; i = numRows; i++, j += CELLHEIGHT) {
g.drawLine(0, j, totalWidth, j); //绘制表格线
}
xNum = (getFirstDayOfMonth(searchYear, searchMonth) + 1) * CELLWIDTH – MARGIN;
yNum = TOP + MARGIN + fontAscent;
numDays = daysInMonth[searchMonth] + ((calendar.isLeapYear(searchYear) (searchMonth == FEBRUARY)) ? 1 : 0);
for (int day = 1; day = numDays; day++) {
dayStr = Integer.toString(day);
g.drawString(dayStr, xNum – fontMetric.stringWidth(dayStr), yNum); //绘制字符串
xNum += CELLWIDTH;
if (xNum totalWidth) {
xNum = CELLWIDTH – MARGIN;
yNum += CELLHEIGHT;
}
}
}
public boolean action(Event e, Object o){
int searchYearInt;
if (e.target==btUpdate){
searchMonth = monthChoice.getSelectedIndex(); //得到查询月份
searchYearInt = Integer.parseInt(tfYear.getText(), 10); //得到查询年份
if (searchYearInt 1581) {
searchYear = searchYearInt;
}
repaint(); //重绘屏幕
return true;
}
return false;
}
private int getNumberRows(int year, int month) { //得到行数量
int firstDay;
int numCells;
if (year 1582) { //年份小于1582年，则返回-1
return (-1);
}
if ((month 0) || (month 11)) {
return (-1);
}
firstDay = getFirstDayOfMonth(year, month); //计算月份的第一天
if ((month == FEBRUARY) (firstDay == 0) !calendar.isLeapYear(year)) {
return 4;
}
numCells = firstDay + daysInMonth[month];
if ((month == FEBRUARY) (calendar.isLeapYear(year))) {
numCells++;
}
return ((numCells = 35) ? 5 : 6); //返回行数
}
private int getFirstDayOfMonth(int year, int month) { //得到每月的第一天
int firstDay;
int i;
if (year 1582) { //年份小于1582年,返回-1
return (-1);
}
if ((month 0) || (month 11)) { //月份数错误,返回-1
return (-1);
}
firstDay = getFirstDayOfYear(year);//得到每年的第一天
for (i = 0; i month; i++) {
firstDay += daysInMonth[i]; //计算每月的第一天
}
if ((month FEBRUARY) calendar.isLeapYear(year)) {
firstDay++;
}
return (firstDay % 7);
}
private int getFirstDayOfYear(int year){ //计算每年的第一天
int leapYears;
int hundreds;
int fourHundreds;
int first;
if (year 1582) { //如果年份小于1582年
return (-1); //返回-1
}
leapYears = (year – 1581) / 4;
hundreds = (year – 1501) / 100;
leapYears -= hundreds;
fourHundreds = (year – 1201) / 400;
leapYears += fourHundreds;
first=5 + (year – 1582) + leapYears % 7; //得到每年第一天
return first;
}
}
/*
* DateFormat dateFormat=new SimpleDateFormat(“yyyy-MM-dd hh:mm:ss”);
* dateFormat.format(new Date());//1987-02-17 21:02:01
*/
我自己弄的，你参考下
用java图形用户界面实现: 编写一个日历程序，能实现显示日历等简单功能。
import javax.swing.JOptionPane;
public class NewClass{
public static void main(String[] args){
int year,month;
Calender cal=new Calender(2008,10);
cal.showCalender();
year=Integer.parseInt(JOptionPane.showInputDialog(“Year:”));
month=Integer.parseInt(JOptionPane.showInputDialog(“Month:”));
cal.setYear(year);
cal.setMonth(month);
cal.showCalender();
}
}
class Calender{
private int year,month;
public Calender(){
year=0;
month=1;
}
public Calender(int year){
this.year=year;
month=1;
}
public Calender(int year,int month){
this.year=year;
if(month12)
this.month=month%12;
else
this.month=month;
}
public void setYear(int year){
this.year=year;
}
public void setMonth(int month){
if(month12)
this.month=month%12;
else
this.month=month;
}
private int dayOfMonth(){
int days=0;
switch(month){
case 1:days=31;break;
case 2:{
if(((year%4==0)(year%100!=0))||(year%400==0))
days=29;
else
days=28;
break;
}
case 3:days=31;break;
case 4:days=30;break;
case 5:days=31;break;
case 6:days=30;break;
case 7:days=31;break;
case 8:days=31;break;
case 9:days=30;break;
case 10:days=31;break;
case 11:days=30;break;
case 12:days=31;break;
default:
days=0;
}
return days;
}
private int dayOfWeek(){
int Y=year;
int M=month;
int D=1;
int A;
A = Y0?(5+(Y+1)+(Y-1)/4-(Y-1)/100+(Y-1)/400)%7:(5+Y+Y/4-Y/100+Y/400)%7;
A = M2?(A+2*(M+1)+3*(M+1)/5)%7:(A+2*(M+2)+3*(M+2)/5)%7;
if (((Y%4 == 0 Y%100 != 0)|| Y%400 == 0) M2) A =(A+1)%7;
A=(A+D)%7;
return A;
}
public void showCalender(){
String str=new String();
str=” “;
str+=year+”年”+month+”月”;
str+=”\n\n”;
str+=”日 一 二 三 四 五 六\n”;
int week=this.dayOfWeek();
for(int i=0,j=1;i7;i++){
if(iweek)
str+=” “;
else{
str+=” “+j+” “;
j++;
}
}
str+=”\n”;
end:
for(int i=7-week+1;i=this.dayOfMonth();){
for(int j=0;j7;j++){
if(i10)
str+=” “+i+” “;
else
str+=i+” “;
i++;
if(ithis.dayOfMonth())
break end;
}
str+=”\n”;
}
JOptionPane.showMessageDialog(null,str);
}
}
JAVA编写日历
SWING和线程的技术。。至于日期类，估计你应该知道吧，如果不知道赶紧查API吧。你可以百度一下，想飞社区，在资源里 JAVA版日期控件。说明文档+源码都有，你可以参考一下。最终成型如下图
关于用java编写日历系统和日历的设计与实现Java课程设计的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。
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