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如何用JAVA写日历？
按照你的要求编写的Java日历验证程序如下
UI.java
import java.util.Scanner;
public class UI {
static Scanner sc=new Scanner(System.in);
public static int askInt(String s){
System.out.print(s);
return sc.nextInt();
}
public static void println(String s){
System.out.println(s);
}
}
EE.java
public class EE {
public void validateDateCore(){
int year =UI.askInt("Enter the year: ");
int month=UI.askInt("Enter the month: ");
int day=UI.askInt("Enter the day: ");
if(year 1){
UI.println("The year is not a valid number.");
return;
}
if(month1 || month12){
UI.println("The month is not a valid number.");
return;
}
int monthDay=0;
switch(month){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:monthDay=31;break;
case 4:
case 6:
case 9:
case 11:monthDay=30;break;
case 2:
if((year%4==0 year%100!=0) || year%400==0){
monthDay=29;
}else{
monthDay=28;
}
break;
}
if(day1 || daymonthDay){
UI.println("The day is not a valid number.");
return;
}else{
UI.println("It is "+day+"/"+month+"/"+year+".");
}
}
public static void main(String[] args) {
new EE().validateDateCore();
}
}
运行结果
帮忙用JAVA编写一个简单的日历
这是我几年前写的
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
public class $ {
private static int[] DAYS = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
public static void main(String[] args) {
long l1 = System.currentTimeMillis();
List data = rili(2015, 1, 2015, 12);
long l2 = System.currentTimeMillis();
for (int i = 0; i data.size(); i++) {
System.out.println(data.get(i));
}
System.out.println((l2 - l1) + "MS");
}
private static List rili(int startYear, int startMonth, int endYear, int endMonth) {
if (startYear endYear || (startYear == endYear startMonth endMonth)) {
return null;
}
List data = new ArrayList();
for (int ii = startYear; ii = endYear; ii++) {
int startM = startMonth - 1;
int endM = endMonth - 1;
if (startYear endYear) {
if (ii == endYear) {
endM = 11;
} else {
startM = 0;
}
}
for (int i = startM; i = endM; i++) {
data.add("-----------------------" + ii + "年" + (i + 1) + "月-----------------------");
data.add("日\t一\t二\t三\t四\t五\t六");
int day = days(ii, i);
StringBuffer buf = new StringBuffer();
int idx = 1;
while (idx = day) {
int len = 0;
if (idx == 1) {
Calendar c = Calendar.getInstance();
c.set(ii, i, idx);
int xingqi = c.get(Calendar.DAY_OF_WEEK);
len = getLen(xingqi);
buf.append(addBlank(len));
}
buf.append(idx++);
for (int k = len + 1; k 7; k++) {
if (idx day) {
break;
}
buf.append("\t" + (idx++));
}
buf.append("\n");
}
data.add(buf);
}
}
return data;
}
private static StringBuffer addBlank(int len) {
StringBuffer buf = new StringBuffer();
for (int index = 0; index len; index++) {
buf.append("\t");
}
return buf;
}
private static int getLen(int xingqi) {
return xingqi == Calendar.SUNDAY ? 0 : xingqi - 1;
}
public static int days(int year, int month) {
if (month != 1) {
return DAYS[month];
}
if ((year % 4 == 0 year % 100 != 0) || year % 400 == 0) {
return 29;
}
return DAYS[month];
}
}
java制作日历
package com;import java.awt.Color;import java.awt.Font;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import java.util.Date;import java.util.GregorianCalendar;import javax.swing.JButton;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JLabel;public class Calender2 extends JFrame implements ActionListener, ItemListener { private static final long serialVersionUID = 1L; public static void main(String args[]) { try { Calender2 frame = new Calender2(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } private Date date = new Date(); private GregorianCalendar gregorianCalendar = new GregorianCalendar(); private String[] stringWeek = new String[] { "SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT" }; private String[] stringWeekCn = new String[] { "星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" }; private String[] stringMonth = new String[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec" }; private String[] strSysTime = new String[6]; // 存储当前日期信息 private String[] strSysNowTime = new String[6]; // 存储运行时日期信息 private JButton[] buttonDay = new JButton[42]; private JButton[] buttonWeek = new JButton[7]; private JLabel labelMonth = new JLabel(); private JButton buttonToday = new JButton(); private JButton buttonLastMonth = new JButton(); private JButton buttonNextMonth = new JButton(); private JComboBox comboYear = new JComboBox(); private JComboBox comboMonth = new JComboBox(); public Calender2() { super("万年历"); getContentPane().setLayout(new GridLayout(8, 7, 3, 5)); setBounds(250, 200, 530, 360); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); comboYear.setForeground(new Color(0, 0, 255)); comboYear.setFont(new Font("", Font.PLAIN, 14)); for (int y = 1900; y 2101; y++) { comboYear.addItem(" " + new Integer(y).toString()); } getContentPane().add(comboYear); comboYear.addItemListener(this); final JLabel labelYear = new JLabel(); labelYear.setForeground(Color.BLUE); labelYear.setFont(new Font("新宋体", Font.PLAIN, 14)); getContentPane().add(labelYear); labelYear.setText(" 年"); comboMonth.setForeground(new Color(0, 0, 255)); comboMonth.setFont(new Font("", Font.PLAIN, 14)); for (int m = 1; m 13; m++) { comboMonth.addItem(" " + new Integer(m).toString()); } getContentPane().add(comboMonth); comboMonth.addItemListener(this); getContentPane().add(labelMonth); labelMonth.setForeground(Color.BLUE); labelMonth.setFont(new Font("新宋体", Font.PLAIN, 14)); labelMonth.setText(" 月"); getContentPane().add(buttonLastMonth); buttonLastMonth.setForeground(Color.BLUE); buttonLastMonth.setFont(new Font("新宋体", Font.PLAIN, 14)); buttonLastMonth.setText("上月"); buttonLastMonth.addActionListener(this); getContentPane().add(buttonToday); buttonToday.setForeground(Color.BLUE); buttonToday.setFont(new Font("新宋体", Font.PLAIN, 14)); buttonToday.setText("今天"); buttonToday.addActionListener(this); getContentPane().add(buttonNextMonth); buttonNextMonth.setForeground(Color.BLUE); buttonNextMonth.setFont(new Font("新宋体", Font.PLAIN, 14)); buttonNextMonth.setText("下月"); buttonNextMonth.addActionListener(this); for (int i = 0; i 7; i++) { buttonWeek[i] = new JButton(); if (i == 0 || i == 6) { buttonWeek[i].setForeground(Color.RED); } else { buttonWeek[i].setForeground(Color.BLUE); } buttonWeek[i].setFont(new Font("新宋体", Font.PLAIN, 12)); buttonWeek[i].setText(stringWeekCn[i]); getContentPane().add(buttonWeek[i]); } for (int i = 0; i 42; i++) { buttonDay[i] = new JButton(); buttonDay[i].setText(""); getContentPane().add(buttonDay[i]); } this.setResizable(false); getSysNowTimeInfo(); setNowDate(); setNowDate(); } public void setSysDate(int year, int month) { // 将日期设置为year年month月1日 gregorianCalendar.set(year, month, 1); } public void actionPerformed(ActionEvent ae) { if (ae.getSource() == buttonToday) { setNowDate(); setNowDate(); } else if (ae.getSource() == buttonLastMonth) { setDate(-1); } else { setDate(1); } } public void itemStateChanged(ItemEvent arg0) { setDate(0); } public void getSysNowTimeInfo() { // 得到程序运行时的时间信息并存储在字符串数组strSysNowTime中 date = gregorianCalendar.getTime(); strSysNowTime = (date + "").split(" "); } public void getSysTimeInfo() { // 得到系统当前的时间信息并存储在字符串数组strSysTime中 date = gregorianCalendar.getTime(); strSysTime = (date + "").split(" "); } public int getNowMonth() { int month = 0; for (int i = 0; i 12; i++) { if (strSysNowTime[1].equalsIgnoreCase(stringMonth[i])) { month = i; break; } } return month; } public int weekStrat(String strWeek) { // 返回字符串strWeek与星期中的第几天匹配，SUN为第一天 int strat = 0; for (int i = 0; i 7; i++) { if (strWeek.equalsIgnoreCase(stringWeek[i])) { strat = i; break; } } return strat; } public void setNowDate() { // 将时间设置为程序运行时的时间 setSysTime(getNowYear(), getNowMonth()); getSysTimeInfo(); setDayNull(); getDay(getMonthDays(getNowYear(), getNowMonth() - 1), getMonthDays( getNowYear(), getNowMonth()), weekStrat(strSysTime[0]), getNowDay()); comboYear.setSelectedIndex(getNowYear() - 1900); comboMonth.setSelectedIndex(getNowMonth()); } public void setDate(int move) { // 将时间设置为选中的年月增加move个月之后的时间 setSysTime(getYear(), getMonth() + move); getSysTimeInfo(); setDayNull(); getDay(getMonthDays(getYear(), getMonth() + move - 1), getMonthDays( getYear(), getMonth() + move), weekStrat(strSysTime[0]), -1); if (move != 0) { if (getMonth() == 0 move 0) { move = 11; comboYear.setSelectedIndex(getYear() - 1901); } else if (getMonth() == 11 move 0) { move = -11; comboYear.setSelectedIndex(getYear() - 1899); } else { comboYear.setSelectedIndex(getYear() - 1900); } comboMonth.setSelectedIndex(getMonth() + move); } } public void setSysTime(int year, int month) { gregorianCalendar.set(year, month, 1); } public int getNowYear() { return Integer.parseInt(strSysNowTime[5]); } public int getNowDay() { return Integer.parseInt(strSysNowTime[2]); } public int getYear() { return comboYear.getSelectedIndex() + 1900; } public int getMonth() { return comboMonth.getSelectedIndex(); } public void setDayNull() { for (int d = 0; d 42; d++) { buttonDay[d].setText(""); } } public void getDay(int lastMonDays, int monthDays, int startWeek, int day) { // 设置日期颜色并打印 for (int d = 0; d startWeek + 1; d++) { buttonDay[d].setForeground(Color.GRAY); buttonDay[d].setText((lastMonDays - startWeek) + d + 1 + ""); } for (int d = startWeek; d startWeek + monthDays; d++) { if ((d - startWeek + 1) == day) { buttonDay[d].setForeground(Color.blue); } else if (d % 7 == 0 || d % 7 == 6) { buttonDay[d].setForeground(Color.RED); } else { buttonDay[d].setForeground(Color.BLACK); } buttonDay[d].setText(d - startWeek + 1 + ""); } for (int d = monthDays + startWeek; d 42; d++) { buttonDay[d].setForeground(Color.GRAY); buttonDay[d].setText(d - (monthDays + startWeek) + 1 + ""); } } public int getMonthDays(int year, int month) { // 返回year年month月的天数 switch (month) { case 3: case 5: case 8: case 10: return 30; case 1: if (gregorianCalendar.isLeapYear(year)) { return 29; } else { return 28; } default: return 31; } }}
java语言编写日历
import java.util.*;
public class calendar
{
public static void main(String[] args)
{
new calendar().makeCalendar();
}
public void makeCalendar()
{
int i;
int j;
int year = 0;
int month = 0;
int week = 0;
int totalDay = 0;
Scanner scanner = new Scanner(System.in);
Calendar ca = Calendar.getInstance();
printAsterisk();
System.out.print("欢 迎 使 用 万 年 历");
printAsterisk();
System.out.print("\n\n请输入年份:");
year = scanner.nextInt();
System.out.print("\n\n请输入月份:");
month = scanner.nextInt() ;
ca.set(year, month - 1,1);
week = ca.get(Calendar.DAY_OF_WEEK)-1;//获取输入月第一天是星期几
if( month != 2)
totalDay = calculatetotalDay(year , month);
else
{
if(judgeLeap_year(year))
totalDay = calculatetotalDay(year , month) + 1;//如果是闰年，加一天
else
totalDay = calculatetotalDay(year , month);
}
System.out.println("\n\n\n星期日\t星期一\t星期二\t星期三\t星期四\t星期五\t星期六");
for(i = 0;i week;i++)
{
System.out.print("\t");
}
for( i = 1; i (8 - week);i++)
System.out.print(i + "\t");
for( i = (8 - week),j = 0;i = totalDay;i++,j++)
{
if(j % 7 == 0)
System.out.println();
System.out.print(i+"\t");
}
}
public void printAsterisk()
{
int i;
for( i = 0 ; i 18;i++)
System.out.print("*");
}
//获取输入月的天数
public int calculatetotalDay(int year ,int month)
{
int result = 0;
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: result = 31;
break;
case 4:
case 6:
case 9:
case 11:result = 30;
break;
default:result = 28;
break;
}
return result;
}
//判断闰年
public boolean judgeLeap_year(int year)
{
if((year % 4 == 0 year % 100 != 0) || year % 400 == 0)
return true;
else
return false;
}
}
用java写个日历程序怎么写，请给出详细步骤，谢谢
随便做了一个，其实一楼网友说的判断哪些30天，是否闰年什么的没必要，看代码：
package com.baidu.calendar;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
public class CalendarInterface extends JFrame {
private static final long serialVersionUID = 1L;
private JComboBox yearBox, monthBox;
private static final int YEAR_RANGE = 50; // 年份范围，即往前往后各推多少年
private JPanel topPane, contentPane;
private JPanel bottomPane, bottomTopPane, mainPane;
private JLabel dateLabel;
private boolean init = false;
private Calendar cal;
private static final Calendar NOW = Calendar.getInstance();
private static final String[] DAY_OF_WEEK = {"星期日", "星期一", "星期二",
"星期三", "星期四", "星期五", "星期六"};
private DateFormat df = new SimpleDateFormat("yyyy年MM月");
private static final Color FONT_GRAY = new Color(0xaa, 0xaa, 0xaa);
private static final int DATE_GRAY = -1;
private static final int DATE_RED = 1;
private static final int DATE_BLACK = 0;
public CalendarInterface() {
super("日历");
cal = Calendar.getInstance();
cal.setFirstDayOfWeek(Calendar.SUNDAY);
}
public void launch() {
setVisible(true);
setSize(600, 450);
setDefaultCloseOperation(EXIT_ON_CLOSE);
// 主面板
contentPane = new JPanel(new BorderLayout());
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setBackground(Color.WHITE);
// 顶部选择日期和月份的区域
topPane = new JPanel(new FlowLayout(FlowLayout.CENTER, 50, 0)); // 居中对齐，控件间隔50px
topPane.setBorder(new EmptyBorder(0, 0, 10, 0)); // 底部空出10px
topPane.setBackground(Color.WHITE);
// 底部显示星期条和日历列表区域
bottomPane = new JPanel(new BorderLayout());
bottomPane.setBorder(new LineBorder(Color.BLACK, 1));
// 星期条
bottomTopPane = new JPanel(new GridLayout(1, 7));
bottomTopPane.setBackground(new Color(0x55, 0x55, 0x55));
// 日期列表
mainPane = new JPanel();
mainPane.setLayout(new GridLayout(0, 7)); // 列数为7，行数自动填充
for(int i = Calendar.SUNDAY; i = Calendar.SATURDAY; i ++) {
bottomTopPane.add(createDay(DAY_OF_WEEK[i - 1]));
}
bottomPane.add(bottomTopPane, BorderLayout.NORTH); // 星期栏放在顶部
// 年份下拉列表
yearBox = new JComboBox();
int currentYear = cal.get(Calendar.YEAR);
// 年份范围为往前往后各推50年
for(int i = currentYear - YEAR_RANGE; i currentYear + YEAR_RANGE + 1; i ++) {
yearBox.addItem(i);
}
yearBox.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent e) {
if(ItemEvent.SELECTED == e.getStateChange()) {
reset(); // 选择后刷新布局
}
}
});
yearBox.setSelectedIndex(YEAR_RANGE); // 默认选中当前年份
String months[] = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"};
// 月份下拉列表
monthBox = new JComboBox(months);
monthBox.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent e) {
if(ItemEvent.SELECTED == e.getStateChange()) {
reset(); //刷新布局
}
}
});
monthBox.setSelectedIndex(cal.get(Calendar.MONTH)); // 选择当前月份
// 显示当前年月的控件
this.dateLabel = new JLabel(df.format(cal.getTime()));
topPane.add(yearBox);
topPane.add(monthBox);
topPane.add(dateLabel);
contentPane.add(topPane, BorderLayout.NORTH);
bottomPane.add(mainPane, BorderLayout.CENTER);
contentPane.add(bottomPane, BorderLayout.CENTER);
setContentPane(contentPane);
validate();
init = true; // 初始化完成
reset(); // 刷新界面
setLocationRelativeTo(null); // 居中显示
}
public static void main(String[] args) {
new CalendarInterface().launch();
}
private void reset() { // 每次年份或月份改变后则日历重新排列
if(!init) { // 若未初始化则返回，避免设置默认年月时调用此方法出错
return;
}
int year = (Integer) yearBox.getSelectedItem();
int month = Integer.parseInt((String) monthBox.getSelectedItem());
// 将日期设置为本月第一天
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month - 1);
cal.set(Calendar.DATE, 1);
dateLabel.setText(df.format(cal.getTime())); // 显示年月
mainPane.removeAll(); // 清空日历列表
// 判断本月第一天是星期几，在第一天之前增加空的日历
int startDayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
int i;
// 先设置为本周属于上个月的几天，置灰显示
cal.add(Calendar.DATE, -(startDayOfWeek - Calendar.SUNDAY) - 1);
for(i = Calendar.SUNDAY; i startDayOfWeek; i ++) {
cal.add(Calendar.DATE, 1);
int date = cal.get(Calendar.DATE);
mainPane.add(createDate(Integer.toString(date), DATE_GRAY));
}
i = startDayOfWeek;
// 重新初始化为本月第一天
cal.set(Calendar.MONTH, month - 1);
cal.set(Calendar.DATE, 1);
int maxDate = cal.getActualMaximum(Calendar.DATE); // 本月最多的天数（不用再去判断是否闰年了）
for(int j = 1; j = maxDate; j ++) {
cal.set(Calendar.DATE, j); // 日期一直自增，用来判断是否是今天
JLabel jlDate = null;
if(isToday()) { // 是今天则高亮显示
jlDate = createDate(Integer.toString(j), DATE_RED);
} else { // 不是今天则显示为普通颜色
jlDate = createDate(Integer.toString(j));
}
mainPane.add(jlDate);
}
// 最后一周把不属于本月的几天用灰色控件填充
int lastDay = cal.get(Calendar.DAY_OF_WEEK);
for(i = lastDay; i Calendar.SATURDAY; i ++) {
cal.add(Calendar.DATE, 1);
int date = cal.get(Calendar.DATE);
mainPane.add(createDate(Integer.toString(date), DATE_GRAY));
}
mainPane.validate();
}
private JLabel createDate(String date) {
return createDate(date, DATE_BLACK);
}
// 创建日期控件
private JLabel createDate(String date, int dateColor) {
JLabel label = new JLabel(date, JLabel.CENTER);
CompoundBorder border = new CompoundBorder(
new LineBorder(Color.WHITE, 1),
new EmptyBorder(10, 10, 10, 10));
label.setBorder(border);
Font font = new Font("Arial", Font.BOLD, 30);
if(DATE_GRAY == dateColor) { // 如果不是本月则文字置灰
label.setForeground(FONT_GRAY);
} else if(DATE_RED == dateColor) { // 如果是今天则高亮显示
label.setForeground(Color.RED);
}
label.setFont(font);
return label;
}
// 创建星期几的横条
private JLabel createDay(String day) {
JLabel jlDay = new JLabel(day, JLabel.CENTER);
jlDay.setBorder(new EmptyBorder(5, 5, 5, 5));
jlDay.setBackground(Color.GRAY);
jlDay.setForeground(Color.WHITE);
return jlDay;
}
// 判断是否今天
private boolean isToday() {
return cal.get(Calendar.YEAR) == NOW.get(Calendar.YEAR)
cal.get(Calendar.MONTH) == NOW.get(Calendar.MONTH)
cal.get(Calendar.DATE) == NOW.get(Calendar.DATE);
}
}
怎样用java编写日历
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.SystemColor;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Locale;
import java.util.Date;
import java.util.StringTokenizer;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JToggleButton;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
/**
* pTitle: Swing日历/p
* pDescription: 操作日期/p
* @author duxu2004
* @version 1.0.1
*/
class JCalendar extends JPanel{
//动态表示年月日
private int year=0;
private int month=0;
private int day=0;
//主面板
private JPanel Main = new JPanel();
//日面板
private JPanel jPanelDay = new JPanel();
//月面板
private JPanel jPanelMonth = new JPanel();
//年的输入位置
private JTextField Year = new JTextField();
//月的输入位置
private JTextField Month = new JTextField();
//减少月份
private JButton MonthDown = new JButton();
//增加月份
private JButton MonthUp = new JButton();
private JPanel jPanelButton = new JPanel();
//减少年份
private JButton YearDown = new JButton();
//增加年份
private JButton YearUp = new JButton();
//显示日期的位置
private JLabel Out = new JLabel();
//中国时区，以后可以从这里扩展可以设置时区的功能
private Locale l=Locale.CHINESE;
//主日历
private GregorianCalendar cal=new GregorianCalendar(l);
//星期面板
private JPanel weekPanel=new JPanel();
//天按钮组
private JToggleButton[] days=new JToggleButton[42];
//天面板
private JPanel Days = new JPanel();
//标示
private JLabel jLabel1 = new JLabel();
private JLabel jLabel2 = new JLabel();
private JLabel jLabel3 = new JLabel();
private JLabel jLabel4 = new JLabel();
private JLabel jLabel5 = new JLabel();
private JLabel jLabel6 = new JLabel();
private JLabel jLabel7 = new JLabel();
//当前选择的天数按钮
private JToggleButton cur=null;
//月份天数数组，用来取得当月有多少天
// 1 2 3 4 5 6 7 8 9 10 11 12
private int[] mm={31,28,31,30,31,30,31,31,30,31,30,31};
//空日期构造函数
public JCalendar() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
//带日期设置的构造函数
public JCalendar(int year, int month, int day) {
cal.set(year, month, day);
try {
jbInit();
}
catch (Exception e) {
e.printStackTrace();
}
}
//带日历输入的构造函数
public JCalendar(GregorianCalendar calendar) {
cal=calendar;
try {
jbInit();
}
catch (Exception e) {
e.printStackTrace();
}
}
//带日期输入的构造函数
public JCalendar(Date date) {
cal.setTime(date);
try {
jbInit();
}
catch (Exception e) {
e.printStackTrace();
}
}
//初始化组件
private void jbInit() throws Exception {
//初始化年、月、日
iniCalender();
this.setLayout(new BorderLayout());
this.setBorder(BorderFactory.createRaisedBevelBorder());
this.setMaximumSize(new Dimension(200, 200));
this.setMinimumSize(new Dimension(200, 200));
this.setPreferredSize(new Dimension(200, 200));
Main.setLayout(new BorderLayout());
Main.setBackground(SystemColor.info);
Main.setBorder(null);
Out.setBackground(Color.lightGray);
Out.setHorizontalAlignment(SwingConstants.CENTER);
Out.setMaximumSize(new Dimension(100, 19));
Out.setMinimumSize(new Dimension(100, 19));
Out.setPreferredSize(new Dimension(100, 19));
jLabel1.setForeground(Color.red);
jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
jLabel1.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel1.setText("日");
jLabel2.setForeground(Color.blue);
jLabel2.setHorizontalAlignment(SwingConstants.CENTER);
jLabel2.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel2.setText("六");
jLabel3.setHorizontalAlignment(SwingConstants.CENTER);
jLabel3.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel3.setText("五");
jLabel4.setHorizontalAlignment(SwingConstants.CENTER);
jLabel4.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel4.setText("四");
jLabel5.setHorizontalAlignment(SwingConstants.CENTER);
jLabel5.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel5.setText("三");
jLabel6.setBorder(null);
jLabel6.setHorizontalAlignment(SwingConstants.CENTER);
jLabel6.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel6.setText("二");
jLabel7.setBackground(Color.lightGray);
jLabel7.setForeground(Color.black);
jLabel7.setBorder(null);
jLabel7.setHorizontalAlignment(SwingConstants.CENTER);
jLabel7.setHorizontalTextPosition(SwingConstants.CENTER);
jLabel7.setText("一");
weekPanel.setBackground(UIManager.getColor("InternalFrame.activeTitleGradient"));
weekPanel.setBorder(BorderFactory.createEtchedBorder());
weekPanel.setLayout(new GridLayout(1,7));
weekPanel.add(jLabel1, null);
weekPanel.add(jLabel7, null);
weekPanel.add(jLabel6, null);
weekPanel.add(jLabel5, null);
weekPanel.add(jLabel4, null);
weekPanel.add(jLabel3, null);
weekPanel.add(jLabel2, null);
MonthUp.setAlignmentX((float) 0.0);
MonthUp.setActionMap(null);
jPanelMonth.setBackground(SystemColor.info);
jPanelMonth.setLayout(new BorderLayout());
jPanelMonth.setBorder(BorderFactory.createEtchedBorder());
Month.setBorder(null);
Month.setHorizontalAlignment(SwingConstants.CENTER);
Month.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(MouseEvent e) {
Month_mouseClicked(e);
}
});
Month.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(KeyEvent e) {
Month_keyPressed(e);
}
});
MonthDown.setBorder(null);
MonthDown.setText("\u25C4");
MonthDown.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
MonthDown_actionPerformed(e);
}
});
MonthUp.setBorder(null);
MonthUp.setText("\u25BA");
MonthUp.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
MonthUp_actionPerformed(e);
}
});
jPanelButton.setLayout(null);
jPanelButton.setBorder(null);
jPanelButton.addComponentListener(new java.awt.event.ComponentAdapter() {
public void componentResized(java.awt.event.ComponentEvent evt) {
jPanelButtonComponentResized(evt);
}
});
Year.setBorder(BorderFactory.createEtchedBorder());
Year.setMaximumSize(new Dimension(80, 25));
Year.setMinimumSize(new Dimension(80, 25));
Year.setPreferredSize(new Dimension(80, 25));
Year.setHorizontalAlignment(SwingConstants.CENTER);
Year.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(MouseEvent e) {
Year_mouseClicked(e);
}
});
Year.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(KeyEvent e) {
Year_keyPressed(e);
}
});
YearDown.setBorder(null);
YearDown.setMaximumSize(new Dimension(16, 16));
YearDown.setMinimumSize(new Dimension(16, 16));
YearDown.setPreferredSize(new Dimension(16, 16));
YearDown.setSize(new Dimension(16, 16));
YearDown.setText("▼");
YearDown.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
YearDown_actionPerformed(e);
}
});
YearUp.setBorder(null);
YearUp.setMaximumSize(new Dimension(16, 16));
YearUp.setMinimumSize(new Dimension(16, 16));
YearUp.setPreferredSize(new Dimension(16, 16));
YearUp.setSize(new Dimension(16, 16));
YearUp.setText("▲");
YearUp.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
YearUp_actionPerformed(e);
}
});
jPanelDay.setLayout(new BorderLayout());
Days.setLayout(new GridLayout(6,7));
Days.setBackground(SystemColor.info);
for(int i=0;i42;i++){
days[i]=new JToggleButton();
days[i].setBorder(null);
days[i].setBackground(SystemColor.info);
days[i].setHorizontalAlignment(SwingConstants.CENTER);
days[i].setHorizontalTextPosition(SwingConstants.CENTER);
//days[i].setSize(l,l);
days[i].addActionListener(new java.awt.event.ActionListener(){
public void actionPerformed(ActionEvent e) {
day=Integer.parseInt(((JToggleButton)e.getSource()).getText());
showDate();
showDays();
}
});
Days.add(days[i]);
}
this.add(Main, BorderLayout.NORTH);
this.add(jPanelDay, BorderLayout.CENTER);
this.add(jPanelMonth, BorderLayout.SOUTH);
Main.add(Year, BorderLayout.CENTER);
Main.add(Out, BorderLayout.WEST);
Main.add(jPanelButton, BorderLayout.EAST);
jPanelButton.add(YearUp);
jPanelButton.add(YearDown);
jPanelDay.add(weekPanel,BorderLayout.NORTH);
jPanelDay.add(Days, BorderLayout.CENTER);
jPanelMonth.add(Month, BorderLayout.CENTER);
jPanelMonth.add(MonthDown, BorderLayout.WEST);
jPanelMonth.add(MonthUp, BorderLayout.EAST);
showMonth();
showYear();
showDate();
showDays();
}
//自定义重画年选择面板
void jPanelButtonComponentResized(java.awt.event.ComponentEvent evt){
YearUp.setLocation(0,0);
YearDown.setLocation(0,YearUp.getHeight());
jPanelButton.setSize(YearUp.getWidth(),YearUp.getHeight()*2);
jPanelButton.setPreferredSize(new Dimension(YearUp.getWidth(),YearUp.getHeight()*2));
jPanelButton.updateUI();
}
//测试用
public static void main(String[] args){
JFrame f=new JFrame();
f.setContentPane(new JCalendar());
f.pack();
//f.setResizable(false);
f.show();
}
//增加年份
void YearUp_actionPerformed(ActionEvent e) {
year++;
showYear();
showDate();
showDays();
}
//减少年份
void YearDown_actionPerformed(ActionEvent e) {
year--;
showYear();
showDate();
showDays();
}
//减少月份
void MonthDown_actionPerformed(ActionEvent e) {
month--;
if(month0) {
month = 11;
year--;
showYear();
}
showMonth();
showDate();
showDays();
}
//增加月份
void MonthUp_actionPerformed(ActionEvent e) {
month++;
if(month==12) {
month=0;
year++;
showYear();
}
showMonth();
showDate();
showDays();
}
//初始化年月日
void iniCalender(){
year=cal.get(Calendar.YEAR);
month=cal.get(Calendar.MONTH);
day=cal.get(Calendar.DAY_OF_MONTH);
}
//刷新月份
void showMonth(){
Month.setText(Integer.toString(month+1)+"月");
}
//刷新年份
void showYear(){
Year.setText(Integer.toString(year)+"年");
}
//刷新日期
void showDate(){
Out.setText(Integer.toString(year)+"-"+Integer.toString(month+1)+"-"+Integer.toString(day));
}
//重画天数选择面板
void showDays() {
cal.set(year,month,1);
int firstDayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
int n=mm[month];
if(cal.isLeapYear(year)month==1) n++;
int i=0;
for(;ifirstDayOfWeek-1;i++){
days[i].setEnabled(false);
days[i].setSelected(false);
days[i].setText("");
}
int d=1;
for(;d=n;d++){
days[i].setText(Integer.toString(d));
days[i].setEnabled(true);
if(d==day) days[i].setSelected(true);
else days[i].setSelected(false);;
i++;
}
for(;i42;i++){
days[i].setEnabled(false);
days[i].setSelected(false);
days[i].setText("");
}
}
//单击年份面板选择整个年份字符串
void SelectionYear(){
Year.setSelectionStart(0);
Year.setSelectionEnd(Year.getText().length());
}
//单击月份面板选择整个月份字符串
void SelectionMonth(){
Month.setSelectionStart(0);
Month.setSelectionEnd(Month.getText().length());
}
//月份面板响应鼠标单击事件
void Month_mouseClicked(MouseEvent e) {
//SelectionMonth();
inputMonth();
}
//检验输入的月份
void inputMonth(){
String s;
if(Month.getText().endsWith("月"))
{
s=Month.getText().substring(0,Month.getText().length()-1);
}
else s=Month.getText();
month=Integer.parseInt(s)-1;
this.showMe();
}
//月份面板键盘敲击事件响应
void Month_keyPressed(KeyEvent e) {
if(e.getKeyChar()==10)
inputMonth();
}
//年份面板响应鼠标单击事件
void Year_mouseClicked(MouseEvent e) {
//SelectionYear();
inputYear();
}
//年份键盘敲击事件响应
void Year_keyPressed(KeyEvent e) {
//System.out.print(new Integer(e.getKeyChar()).byteValue());
if(e.getKeyChar()==10)
inputYear();
}
//检验输入的年份字符串
void inputYear() {
String s;
if(Year.getText().endsWith("年"))
{
s=Year.getText().substring(0,Year.getText().length()-1);
}
else s=Year.getText();
year=Integer.parseInt(s);
this.showMe();
}
//以字符串形式返回日期,yyyy-mm-dd
public String getDate(){return Out.getText();}
//以字符串形式输入日期,yyyy-mm-dd
public void setDate(String date){
if(date!=null){
StringTokenizer f = new StringTokenizer(date, "-");
if(f.hasMoreTokens())
year = Integer.parseInt(f.nextToken());
if(f.hasMoreTokens())
month = Integer.parseInt(f.nextToken());
if(f.hasMoreTokens())
day = Integer.parseInt(f.nextToken());
cal.set(year,month,day);
}
this.showMe();
}
//以日期对象形式输入日期
public void setTime(Date date){
cal.setTime(date);
this.iniCalender();
this.showMe();
}
//返回日期对象
public Date getTime(){return cal.getTime();}
//返回当前的日
public int getDay() {
return day;
}
//设置当前的日
public void setDay(int day) {
this.day = day;
cal.set(this.year,this.month,this.day);
this.showMe();
}
//设置当前的年
public void setYear(int year) {
this.year = year;
cal.set(this.year,this.month,this.day);
this.showMe();
}
//返回当前的年
public int getYear() {
return year;
}
//返回当前的月
public int getMonth() {
return month;
}
//设置当前的月
public void setMonth(int month) {
this.month = month;
cal.set(this.year,this.month,this.day);
this.showMe();
}
//刷新
public void showMe(){
this.showDays();
this.showMonth();
this.showYear();
this.showDate();
}
}
public class TestJCalendar {
public static void main(String[] args) {
JFrame f=new JFrame();
f.setContentPane(new JCalendar());
f.pack();
//f.setResizable(false);
f.show();
}
}
