怎样用java编写日历

import javaawtBorderLayout;

import javaawtColor;

import javaawtDimension;

import javaawtGridLayout;

import javaawtSystemColor;

import javaawteventActionEvent;

import javaawteventKeyEvent;

import javaawteventMouseEvent;

import javautilCalendar;

import javautilGregorianCalendar;

import javautilLocale;

import javautilDate;

import javautilStringTokenizer;

import javaxswingBorderFactory;

import javaxswingJButton;

import javaxswingJFrame;

import javaxswingJLabel;

import javaxswingJPanel;

import javaxswingJTextField;

import javaxswingJToggleButton;

import javaxswingSwingConstants;

import javaxswingUIManager;

/

<p>Title: Swing日历</p>

<p>Description: *** 作日期</p>

@author duxu2004

@version 101

/

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=LocaleCHINESE;

//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) {

eprintStackTrace();

}

}

//带日期设置的构造函数

public JCalendar(int year, int month, int day) {

calset(year, month, day);

try {

jbInit();

}

catch (Exception e) {

eprintStackTrace();

}

}

//带日历输入的构造函数

public JCalendar(GregorianCalendar calendar) {

cal=calendar;

try {

jbInit();

}

catch (Exception e) {

eprintStackTrace();

}

}

//带日期输入的构造函数

public JCalendar(Date date) {

calsetTime(date);

try {

jbInit();

}

catch (Exception e) {

eprintStackTrace();

}

}

//初始化组件

private void jbInit() throws Exception {

//初始化年、月、日

iniCalender();

thissetLayout(new BorderLayout());

thissetBorder(BorderFactorycreateRaisedBevelBorder());

thissetMaximumSize(new Dimension(200, 200));

thissetMinimumSize(new Dimension(200, 200));

thissetPreferredSize(new Dimension(200, 200));

MainsetLayout(new BorderLayout());

MainsetBackground(SystemColorinfo);

MainsetBorder(null);

OutsetBackground(ColorlightGray);

OutsetHorizontalAlignment(SwingConstantsCENTER);

OutsetMaximumSize(new Dimension(100, 19));

OutsetMinimumSize(new Dimension(100, 19));

OutsetPreferredSize(new Dimension(100, 19));

jLabel1setForeground(Colorred);

jLabel1setHorizontalAlignment(SwingConstantsCENTER);

jLabel1setHorizontalTextPosition(SwingConstantsCENTER);

jLabel1setText("日");

jLabel2setForeground(Colorblue);

jLabel2setHorizontalAlignment(SwingConstantsCENTER);

jLabel2setHorizontalTextPosition(SwingConstantsCENTER);

jLabel2setText("六");

jLabel3setHorizontalAlignment(SwingConstantsCENTER);

jLabel3setHorizontalTextPosition(SwingConstantsCENTER);

jLabel3setText("五");

jLabel4setHorizontalAlignment(SwingConstantsCENTER);

jLabel4setHorizontalTextPosition(SwingConstantsCENTER);

jLabel4setText("四");

jLabel5setHorizontalAlignment(SwingConstantsCENTER);

jLabel5setHorizontalTextPosition(SwingConstantsCENTER);

jLabel5setText("三");

jLabel6setBorder(null);

jLabel6setHorizontalAlignment(SwingConstantsCENTER);

jLabel6setHorizontalTextPosition(SwingConstantsCENTER);

jLabel6setText("二");

jLabel7setBackground(ColorlightGray);

jLabel7setForeground(Colorblack);

jLabel7setBorder(null);

jLabel7setHorizontalAlignment(SwingConstantsCENTER);

jLabel7setHorizontalTextPosition(SwingConstantsCENTER);

jLabel7setText("一");

weekPanelsetBackground(UIManagergetColor("InternalFrameactiveTitleGradient"));

weekPanelsetBorder(BorderFactorycreateEtchedBorder());

weekPanelsetLayout(new GridLayout(1,7));

weekPaneladd(jLabel1, null);

weekPaneladd(jLabel7, null);

weekPaneladd(jLabel6, null);

weekPaneladd(jLabel5, null);

weekPaneladd(jLabel4, null);

weekPaneladd(jLabel3, null);

weekPaneladd(jLabel2, null);

MonthUpsetAlignmentX((float) 00);

MonthUpsetActionMap(null);

jPanelMonthsetBackground(SystemColorinfo);

jPanelMonthsetLayout(new BorderLayout());

jPanelMonthsetBorder(BorderFactorycreateEtchedBorder());

MonthsetBorder(null);

MonthsetHorizontalAlignment(SwingConstantsCENTER);

MonthaddMouseListener(new javaawteventMouseAdapter() {

public void mouseClicked(MouseEvent e) {

Month_mouseClicked(e);

}

});

MonthaddKeyListener(new javaawteventKeyAdapter() {

public void keyPressed(KeyEvent e) {

Month_keyPressed(e);

}

});

MonthDownsetBorder(null);

MonthDownsetText("\u25C4");

MonthDownaddActionListener(new javaawteventActionListener() {

public void actionPerformed(ActionEvent e) {

MonthDown_actionPerformed(e);

}

});

MonthUpsetBorder(null);

MonthUpsetText("\u25BA");

MonthUpaddActionListener(new javaawteventActionListener() {

public void actionPerformed(ActionEvent e) {

MonthUp_actionPerformed(e);

}

});

jPanelButtonsetLayout(null);

jPanelButtonsetBorder(null);

jPanelButtonaddComponentListener(new javaawteventComponentAdapter() {

public void componentResized(javaawteventComponentEvent evt) {

jPanelButtonComponentResized(evt);

}

});

YearsetBorder(BorderFactorycreateEtchedBorder());

YearsetMaximumSize(new Dimension(80, 25));

YearsetMinimumSize(new Dimension(80, 25));

YearsetPreferredSize(new Dimension(80, 25));

YearsetHorizontalAlignment(SwingConstantsCENTER);

YearaddMouseListener(new javaawteventMouseAdapter() {

public void mouseClicked(MouseEvent e) {

Year_mouseClicked(e);

}

});

YearaddKeyListener(new javaawteventKeyAdapter() {

public void keyPressed(KeyEvent e) {

Year_keyPressed(e);

}

});

YearDownsetBorder(null);

YearDownsetMaximumSize(new Dimension(16, 16));

YearDownsetMinimumSize(new Dimension(16, 16));

YearDownsetPreferredSize(new Dimension(16, 16));

YearDownsetSize(new Dimension(16, 16));

YearDownsetText("▼");

YearDownaddActionListener(new javaawteventActionListener() {

public void actionPerformed(ActionEvent e) {

YearDown_actionPerformed(e);

}

});

YearUpsetBorder(null);

YearUpsetMaximumSize(new Dimension(16, 16));

YearUpsetMinimumSize(new Dimension(16, 16));

YearUpsetPreferredSize(new Dimension(16, 16));

YearUpsetSize(new Dimension(16, 16));

YearUpsetText("▲");

YearUpaddActionListener(new javaawteventActionListener() {

public void actionPerformed(ActionEvent e) {

YearUp_actionPerformed(e);

}

});

jPanelDaysetLayout(new BorderLayout());

DayssetLayout(new GridLayout(6,7));

DayssetBackground(SystemColorinfo);

for(int i=0;i<42;i++){

days[i]=new JToggleButton();

days[i]setBorder(null);

days[i]setBackground(SystemColorinfo);

days[i]setHorizontalAlignment(SwingConstantsCENTER);

days[i]setHorizontalTextPosition(SwingConstantsCENTER);

//days[i]setSize(l,l);

days[i]addActionListener(new javaawteventActionListener(){

public void actionPerformed(ActionEvent e) {

day=IntegerparseInt(((JToggleButton)egetSource())getText());

showDate();

showDays();

}

});

Daysadd(days[i]);

}

thisadd(Main, BorderLayoutNORTH);

thisadd(jPanelDay, BorderLayoutCENTER);

thisadd(jPanelMonth, BorderLayoutSOUTH);

Mainadd(Year, BorderLayoutCENTER);

Mainadd(Out, BorderLayoutWEST);

Mainadd(jPanelButton, BorderLayoutEAST);

jPanelButtonadd(YearUp);

jPanelButtonadd(YearDown);

jPanelDayadd(weekPanel,BorderLayoutNORTH);

jPanelDayadd(Days, BorderLayoutCENTER);

jPanelMonthadd(Month, BorderLayoutCENTER);

jPanelMonthadd(MonthDown, BorderLayoutWEST);

jPanelMonthadd(MonthUp, BorderLayoutEAST);

showMonth();

showYear();

showDate();

showDays();

}

//自定义重画年选择面板

void jPanelButtonComponentResized(javaawteventComponentEvent evt){

YearUpsetLocation(0,0);

YearDownsetLocation(0,YearUpgetHeight());

jPanelButtonsetSize(YearUpgetWidth(),YearUpgetHeight()2);

jPanelButtonsetPreferredSize(new Dimension(YearUpgetWidth(),YearUpgetHeight()2));

jPanelButtonupdateUI();

}

//测试用

public static void main(String[] args){

JFrame f=new JFrame();

fsetContentPane(new JCalendar());

fpack();

//fsetResizable(false);

fshow();

}

//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(month<0) {

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=calget(CalendarYEAR);

month=calget(CalendarMONTH);

day=calget(CalendarDAY_OF_MONTH);

}

//刷新月份

void showMonth(){

MonthsetText(IntegertoString(month+1)+"月");

}

//刷新年份

void showYear(){

YearsetText(IntegertoString(year)+"年");

}

//刷新日期

void showDate(){

OutsetText(IntegertoString(year)+"-"+IntegertoString(month+1)+"-"+IntegertoString(day));

}

//重画天数选择面板

void showDays() {

calset(year,month,1);

int firstDayOfWeek = calget(CalendarDAY_OF_WEEK);

int n=mm[month];

if(calisLeapYear(year)&&month==1) n++;

int i=0;

for(;i<firstDayOfWeek-1;i++){

days[i]setEnabled(false);

days[i]setSelected(false);

days[i]setText("");

}

int d=1;

for(;d<=n;d++){

days[i]setText(IntegertoString(d));

days[i]setEnabled(true);

if(d==day) days[i]setSelected(true);

else days[i]setSelected(false);;

i++;

}

for(;i<42;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(){

YearsetSelectionStart(0);

YearsetSelectionEnd(YeargetText()length());

}

//单击月份面板选择整个月份字符串

void SelectionMonth(){

MonthsetSelectionStart(0);

MonthsetSelectionEnd(MonthgetText()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(MonthgetText()endsWith("月"))

{

s=MonthgetText()substring(0,MonthgetText()length()-1);

}

else s=MonthgetText();

month=IntegerparseInt(s)-1;

thisshowMe();

}

//月份面板键盘敲击事件响应

void Month_keyPressed(KeyEvent e) {

if(egetKeyChar()==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) {

//Systemoutprint(new Integer(egetKeyChar())byteValue());

if(egetKeyChar()==10)

inputYear();

}

//检验输入的年份字符串

void inputYear() {

String s;

if(YeargetText()endsWith("年"))

{

s=YeargetText()substring(0,YeargetText()length()-1);

}

else s=YeargetText();

year=IntegerparseInt(s);

thisshowMe();

}

//以字符串形式返回日期,yyyy-mm-dd

public String getDate(){return OutgetText();}

//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(fhasMoreTokens())

year = IntegerparseInt(fnextToken());

if(fhasMoreTokens())

month = IntegerparseInt(fnextToken());

if(fhasMoreTokens())

day = IntegerparseInt(fnextToken());

calset(year,month,day);

}

thisshowMe();

}

//以日期对象形式输入日期

public void setTime(Date date){

calsetTime(date);

thisiniCalender();

thisshowMe();

}

//返回日期对象

public Date getTime(){return calgetTime();}

//返回当前的日

public int getDay() {

return day;

}

//设置当前的日

public void setDay(int day) {

thisday = day;

calset(thisyear,thismonth,thisday);

thisshowMe();

}

//设置当前的年

public void setYear(int year) {

thisyear = year;

calset(thisyear,thismonth,thisday);

thisshowMe();

}

//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) {

thismonth = month;

calset(thisyear,thismonth,thisday);

thisshowMe();

}

//刷新

public void showMe(){

thisshowDays();

thisshowMonth();

thisshowYear();

thisshowDate();

}

}

public class TestJCalendar {

public static void main(String[] args) {

JFrame f=new JFrame();

fsetContentPane(new JCalendar());

fpack();

//fsetResizable(false);

fshow();

}

}

你的问题就是把一周的第一天设置为星期一？

那你贴这么多代码干嘛，一句话的事儿吗不是。建议你多看一下api

Calendar里面的方法就有啊， setFirstDayOfWeek

import javautilCalendar;

import javautilDate;

import javautilScanner;

public class MyCalendar

{

public static void main(String[] args)

{

Scanner scanner = new Scanner(Systemin);

String reg = "^(\\d+)[^\\d]+((0[1-9])|(1[012]))$";

while(true)

{

Systemoutprintln("输入年月(年和月用非数字隔开:如20151)(什么都不输入直接退出)");

String line = scannernextLine()trim();

if(""equals(line))

{

scannerclose();

break;

}

if(!linematches(reg))

{

continue;

}

int year = IntegerparseInt(linereplaceAll(reg, "$1"));

int month = IntegerparseInt(linereplaceAll(reg, "$2"));

Systemoutprintln("日\t一\t二\t三\t四\t五\t六");

Calendar calendar = CalendargetInstance();

// 这个月的1号是星期几

calendarset(year, month - 1, 1);

int day = calendarget(CalendarDAY_OF_WEEK);

int start = CalendarSUNDAY;

calendaradd(CalendarDATE, -day + start);

while(start < day)

{

Systemoutprint(calendarget(CalendarDATE) + "\t");

calendaradd(CalendarDATE, 1);

start++;

}

calendarset(year, month - 1, 1);

Date now = calendargetTime();

calendarset(year, month, 1);

Date next = calendargetTime();

for(Date cur = now; curbefore(next);)

{

calendarsetTime(cur);

int x = calendarget(CalendarDATE);

String tmp = x < 10 "0" + x : x + "";

Systemoutprint(tmp + "\t");

if(calendarget(CalendarDAY_OF_WEEK) == CalendarSATURDAY)

{

Systemoutprintln();

}

calendaradd(CalendarDATE, 1);

cur = calendargetTime();

}

calendaradd(CalendarDATE, -1);

int to = calendarget(CalendarDAY_OF_WEEK);

int end = CalendarSATURDAY;

while(to < end)

{

calendaradd(CalendarDATE, 1);

int x = calendarget(CalendarDATE);

String tmp = x < 10 "0" + x : x + "";

Systemoutprint(tmp + "\t");

to++;

}

Systemoutprintln("\r\n");

}

}

}

Calendar

cal=CalendargetInstance();

获取一个calendar实例。这个实例就代表当前系统的时间。然后你可以调用calDATE

calYEAR等获得日，年等的值。调用calset(int

year,int

month,int

day)即可设置你想要的日期的日历。

set

(int year,

int month,

int date) 设置日历字段

YEAR、MONTH

和

DAY_OF_MONTH

的值。

以上就是关于怎样用java编写日历全部的内容，包括:怎样用java编写日历、java核心技术的日历程序，模仿着写出来发现一个星期的第一天是星期日，试了各种方法都改不了，附代码、日历输出程序java控制流程等相关内容解答，如果想了解更多相关内容，可以关注我们，你们的支持是我们更新的动力！