//日历存放列表
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ListString list = new ArrayListString();
//日期格式
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
//月初
Calendar begin=Calendar.getInstance();
begin.set(Calendar.YEAR, year);
begin.set(Calendar.MONTH, month-1);
begin.set(Calendar.DAY_OF_MONTH,1);
System.out.println(format.format(begin.getTime()));
//月末
Calendar end = Calendar.getInstance();
end.setTime(begin.getTime());
end.add(Calendar.MONTH, 1);
end.add(Calendar.DAY_OF_MONTH,-1);
System.out.println(format.format(end.getTime()));
//创建日历
while(end.compareTo(begin)=0){
list.add(format.format(begin.getTime()));
begin.add(Calendar.DAY_OF_MONTH, 1);
}
//显示日历
for(String date : list){
System.out.println(date);
}
建议封装函数，使用数组完成所有的打印
比如获取天数，getDays(int year,int month)
获取星期，getDay(int allDays)
获取极度,getQuater(int month)
然后打印重载写print方法，传入的flag不同打印年 嫉妒等
水平排列有点蛋疼，不过还是想到办法搞定了，希望你运行的时候排列不会有问题。请接招：
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Scanner;
public class CalendarOutput {
private static Calendar cal1, cal2;
private static final String[] DAY_OF_WEEK = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
private static DateFormat df = new SimpleDateFormat("yyyy年MM月");
private static DateFormat parseDf = new SimpleDateFormat("yyyyMM");
private static Scanner sc;
public static void main(String[] args) {
cal1 = Calendar.getInstance();
cal1.set(Calendar.DATE, 1);
cal1.setFirstDayOfWeek(Calendar.SUNDAY);
cal2 = Calendar.getInstance();
cal2.set(Calendar.DATE, 1);
sc = new Scanner(System.in);
System.out.println("请输入年月（如201411）：");
Date d = null;
while(null == d) {
try {
String line = sc.nextLine();
d = parseDf.parse(line);
} catch (ParseException e) {
System.out.println("日期格式不正确，请重新输入！");
d = null;
}
}
cal1.setTime(d);
cal2.set(Calendar.YEAR, cal1.get(Calendar.YEAR));
cal2.set(Calendar.MONTH, cal1.get(Calendar.MONTH));
cal2.add(Calendar.MONTH, 1);
printCal();
}
private static void printCal() {
// 先在最顶部显示年份
System.out.println(String.format("\t%s\t\t\t%s",
df.format(cal1.getTime()), df.format(cal2.getTime())));
printWeek(); // 然后输出星期日到星期一
// 先将两个月的日期保存到两个数组中
String[][] month1 = putMonth(cal1);
String[][] month2 = putMonth(cal2);
// 再将数组中的文字取出来并显示
for(int i = 0; i month1.length; i ++) {
String[] month = month1[i];
// 逐周输出日期
for(int j = 0; j month.length; j ++) {
System.out.print(month[j]);
}
// 如果第二个月周数不小于第一个月，则在本行再输出第二个月的日期
System.out.print("\t");
if(month2.length i) {
for(int j = 0; j month.length; j ++) {
System.out.print(month2[i][j]);
}
}
System.out.println();
}
// 如果第二个月周数大于第一个月，则再输出第二个月的日期（可用2月份检验）
if(month1.length month2.length) {
int deltaMonth = month2.length - month1.length;
for(int i = 0; i deltaMonth; i ++) {
for(int j = 0; j 7; j ++) {
System.out.print(" ");
}
System.out.print("\t");
for(int j = 0; j 7; j ++) {
System.out.print(month2[month1.length + i][j]);
}
}
}
}
private static String[][] putMonth(Calendar cal) {
ListListString listArray = new ArrayListListString();
int month = cal.get(Calendar.MONTH);
cal.set(Calendar.DATE, 1);
int startDayOfWeek1 = cal.get(Calendar.DAY_OF_WEEK);
ListString list = new ArrayListString();
// 先设置为本周属于上个月的几天，以空字符显示
cal.add(Calendar.DATE, -(startDayOfWeek1 - Calendar.SUNDAY) - 1);
for(int i = Calendar.SUNDAY; i startDayOfWeek1; i ++) {
list.add("\t");
}
// 重新初始化为本月第一天
cal.set(Calendar.MONTH, month);
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 ++) {
list.add(String.format("%4s", j + ""));
if(list.size() == 7) {
ListString list2 = new ArrayListString(list);
listArray.add(list2); // 碰到星期六就换行
list = new ArrayListString();
} else if(j == maxDate) {
listArray.add(list); // 最后一天就将最后一周添加进来
}
}
String[][] monthDates = new String[listArray.size()][7];
for(int i = 0; i listArray.size(); i ++) {
ListString item = listArray.get(i);
for(int j = 0; j 7; j ++) {
if(item.size() j) { // 如果是最后一周的话可能存在下标越界
monthDates[i][j] = item.get(j);
} else { // 下标越界的时候设置为空字符串
monthDates[i][j] = "\t";
}
}
}
return monthDates;
}
private static void printWeek() {
for(int i = Calendar.SUNDAY; i = Calendar.SATURDAY; i ++) {
System.out.print(String.format("%4s", DAY_OF_WEEK[i - 1]));
}
System.out.print("\t");
for(int i = Calendar.SUNDAY; i = Calendar.SATURDAY; i ++) {
System.out.print(String.format("%4s", DAY_OF_WEEK[i - 1]));
}
System.out.println();
}
}
以下是用java swing编写的日历，很好用，在我所做的系统里就能够正常的使用
接下来 是具体代码：
package Demo;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class DateChooser extends JPanel implements ActionListener,
ChangeListener {
/**
*
*/
private static final long serialVersionUID = 1L;
int startYear = 1980;
int lastYear = 2050;
int width = 270;
int height = 200;
Color backGroundColor = Color.gray;
Color palletTableColor = Color.white;
Color todayBackColor = Color.orange;
Color weekFontColor = Color.blue;
Color dateFontColor = Color.black;
Color weekendFontColor = Color.red;
Color controlLineColor = Color.pink;
Color controlTextColor = Color.white;
Color rbFontColor = Color.white;
Color rbBorderColor = Color.red;
Color rbButtonColor = Color.pink;
Color rbBtFontColor = Color.red;
JDialog dialog;
JSpinner yearSpin;
JSpinner monthSpin;
JSpinner hourSpin;
JSpinner minuteSpin;
JButton[][] daysButton = new JButton[6][7];
JFormattedTextField jFormattedTextField;
Calendar c = getCalendar();
DateChooser(JFormattedTextField jftf) {
jFormattedTextField = jftf;
setLayout(new BorderLayout());
setBorder(new LineBorder(backGroundColor, 2));
setBackground(backGroundColor);
JPanel topYearAndMonth = createYearAndMonthPanal();
add(topYearAndMonth, BorderLayout.NORTH);
JPanel centerWeekAndDay = createWeekAndDayPanal();
add(centerWeekAndDay, BorderLayout.CENTER);
}
private JPanel createYearAndMonthPanal() {
int currentYear = c.get(Calendar.YEAR);
int currentMonth = c.get(Calendar.MONTH) + 1;
int currentHour = c.get(Calendar.HOUR_OF_DAY);
int currentMinute = c.get(Calendar.MINUTE);
JPanel result = new JPanel();
result.setLayout(new FlowLayout());
result.setBackground(controlLineColor);
yearSpin = new JSpinner(new SpinnerNumberModel(currentYear, startYear,
lastYear, 1));
yearSpin.setPreferredSize(new Dimension(48, 20));
yearSpin.setName("Year");
yearSpin.setEditor(new JSpinner.NumberEditor(yearSpin, "####"));
yearSpin.addChangeListener(this);
result.add(yearSpin);
JLabel yearLabel = new JLabel("年");
yearLabel.setForeground(controlTextColor);
result.add(yearLabel);
monthSpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1, 12, 1));
monthSpin.setPreferredSize(new Dimension(35, 20));
monthSpin.setName("Month");
monthSpin.addChangeListener(this);
result.add(monthSpin);
JLabel monthLabel = new JLabel("月");
monthLabel.setForeground(controlTextColor);
result.add(monthLabel);
hourSpin = new JSpinner(new SpinnerNumberModel(currentHour, 0, 23, 1));
hourSpin.setPreferredSize(new Dimension(35, 20));
hourSpin.setName("Hour");
hourSpin.addChangeListener(this);
result.add(hourSpin);
JLabel hourLabel = new JLabel("时");
hourLabel.setForeground(controlTextColor);
result.add(hourLabel);
minuteSpin = new JSpinner(new SpinnerNumberModel(currentMinute, 0, 59,
1));
minuteSpin.setPreferredSize(new Dimension(35, 20));
minuteSpin.setName("Minute");
minuteSpin.addChangeListener(this);
result.add(minuteSpin);
JLabel minuteLabel = new JLabel("分");
minuteLabel.setForeground(controlTextColor);
result.add(minuteLabel);
return result;
}
private JPanel createWeekAndDayPanal() {
String colname[] = { "日", "一", "二", "三", "四", "五", "六" };
JPanel result = new JPanel();
result.setFont(new Font("宋体", Font.PLAIN, 12));
result.setLayout(new GridLayout(7, 7));
result.setBackground(Color.white);
JLabel cell;
for (int i = 0; i 7; i++) {
cell = new JLabel(colname[i]);
cell.setHorizontalAlignment(JLabel.CENTER);
if (i == 0 || i == 6)
cell.setForeground(weekendFontColor);
else
cell.setForeground(weekFontColor);
result.add(cell);
}
int actionCommandId = 0;
for (int i = 0; i 6; i++)
for (int j = 0; j 7; j++) {
JButton numberButton = new JButton();
numberButton.setBorder(null);
numberButton.setHorizontalAlignment(SwingConstants.CENTER);
numberButton.setActionCommand(String.valueOf(actionCommandId));
numberButton.addActionListener(this);
numberButton.setBackground(palletTableColor);
numberButton.setForeground(dateFontColor);
if (j == 0 || j == 6)
numberButton.setForeground(weekendFontColor);
else
numberButton.setForeground(dateFontColor);
daysButton[i][j] = numberButton;
numberButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (e.getClickCount() == 2) {
closeAndSetDate();
}
}
});
result.add(numberButton);
actionCommandId++;
}
return result;
}
private JDialog createDialog(Frame owner) {
JDialog result = new JDialog(owner, "日期时间选择", true);
result.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
result.getContentPane().add(this, BorderLayout.CENTER);
result.pack();
result.setSize(width, height);
return result;
}
public void showDateChooser(Point position) {
Object tmpobj=SwingUtilities.getWindowAncestor(jFormattedTextField);
if(tmpobj.getClass().isInstance(new JDialog())||tmpobj.getClass().getSuperclass().isInstance(new JDialog()))
{
JDialog ownerdialog = (JDialog) SwingUtilities
.getWindowAncestor(jFormattedTextField);
Frame owner = (Frame) SwingUtilities.getWindowAncestor(ownerdialog);
if (dialog == null || dialog.getOwner() != owner) {
dialog = createDialog(owner);
}
dialog.setLocation(getAppropriateLocation(owner, position));
}
else if(tmpobj.getClass().isInstance(new JFrame())||tmpobj.getClass().getSuperclass().isInstance(new JFrame()))
{
JFrame ownerFrame = (JFrame) SwingUtilities
.getWindowAncestor(jFormattedTextField);
if (dialog == null || dialog.getOwner() != ownerFrame) {
dialog = createDialog(ownerFrame);
}
dialog.setLocation(getAppropriateLocation(ownerFrame, position));
}
flushWeekAndDay();
dialog.setVisible(true);
}
Point getAppropriateLocation(Frame owner, Point position) {
Point result = new Point(position);
Point p = owner.getLocation();
int offsetX = (position.x + width) - (p.x + owner.getWidth());
int offsetY = (position.y + height) - (p.y + owner.getHeight());
if (offsetX 0) {
result.x -= offsetX;
}
if (offsetY 0) {
result.y -= offsetY;
}
return result;
}
public void closeAndSetDate() {
setDate(c.getTime());
dialog.dispose();
}
private Calendar getCalendar() {
Calendar result = Calendar.getInstance();
result.setTime(getDate());
return result;
}
private int getSelectedYear() {
return ((Integer) yearSpin.getValue()).intValue();
}
private int getSelectedMonth() {
return ((Integer) monthSpin.getValue()).intValue();
}
private int getSelectedHour() {
return ((Integer) hourSpin.getValue()).intValue();
}
private int getSelectedMinute() {
return ((Integer) minuteSpin.getValue()).intValue();
}
private void dayColorUpdate(boolean isOldDay) {
int day = c.get(Calendar.DAY_OF_MONTH);
c.set(Calendar.DAY_OF_MONTH, 1);
int actionCommandId = day - 2 + c.get(Calendar.DAY_OF_WEEK);
int i = actionCommandId / 7;
int j = actionCommandId % 7;
if (isOldDay)
daysButton[i][j].setForeground(dateFontColor);
else
daysButton[i][j].setForeground(todayBackColor);
}
private void flushWeekAndDay() {
c.set(Calendar.DAY_OF_MONTH, 1);
int maxDayNo = c.getActualMaximum(Calendar.DAY_OF_MONTH);
int dayNo = 2 - c.get(Calendar.DAY_OF_WEEK);
for (int i = 0; i 6; i++) {
for (int j = 0; j 7; j++) {
String s = "";
if (dayNo = 1 dayNo = maxDayNo)
s = String.valueOf(dayNo);
daysButton[i][j].setText(s);
dayNo++;
}
}
dayColorUpdate(false);
}
public void stateChanged(ChangeEvent e) {
JSpinner source = (JSpinner) e.getSource();
if (source.getName().equals("Minute")) {
c.set(Calendar.MINUTE, getSelectedMinute());
return;
}
if (source.getName().equals("Hour")) {
c.set(Calendar.HOUR_OF_DAY, getSelectedHour());
return;
}
dayColorUpdate(true);
if (source.getName().equals("Year")) {
c.set(Calendar.YEAR, getSelectedYear());
}
if (source.getName().equals("Month")) {
c.set(Calendar.MONTH, getSelectedMonth() - 1);
}
flushWeekAndDay();
}
public void actionPerformed(ActionEvent e) {
JButton source = (JButton) e.getSource();
if (source.getText().length() == 0)
return;
dayColorUpdate(true);
source.setForeground(todayBackColor);
int newDay = Integer.parseInt(source.getText());
c.set(Calendar.DAY_OF_MONTH, newDay);
}
public void setDate(Date date) {
jFormattedTextField.setText(getDefaultDateFormat().format(date));
}
public Date getDate() {
try {
String dateString = jFormattedTextField.getText();
return getDefaultDateFormat().parse(dateString);
} catch (ParseException e) {
return getNowDate();
} catch (Exception ee) {
return getNowDate();
}
}
private static Date getNowDate() {
return Calendar.getInstance().getTime();
}
private static SimpleDateFormat getDefaultDateFormat() {
return new SimpleDateFormat("yyyy-MM-dd HH:mm");
}
}
测试程序：
package Demo;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class DemoForDateChooser extends JFrame {
private JFormattedTextField formattedTextField;
/**
* Launch the application
* @param args
*/
public static void main(String args[]) {
try {
DemoForDateChooser frame = new DemoForDateChooser();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Create the frame
*/
public DemoForDateChooser() {
super();
setTitle("日期选择框");
getContentPane().setLayout(null);
setBounds(100, 100, 383, 137);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel panel = new JPanel();
panel.setLayout(null);
panel.setBounds(0, 0, 375, 107);
getContentPane().add(panel);
formattedTextField = new JFormattedTextField();
formattedTextField.setBounds(68, 48, 175, 23);
final JButton button = new JButton();
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
DateChooser mDateChooser=new DateChooser(formattedTextField);
Point p = button.getLocationOnScreen();
p.y = p.y + 30;
mDateChooser.showDateChooser(p);
formattedTextField.requestFocusInWindow();
}
});
button.setText("选择日期");
button.setBounds(249, 47, 99, 23);
panel.add(button);
final JLabel label = new JLabel();
label.setText("日期：");
label.setBounds(10, 47, 71, 23);
panel.add(label);
panel.add(formattedTextField);
//
}
}
