源代码：
//DatePicker.java
package com.kxsoft.component;
import java.awt.*;
import java.awt.event.*;
import java.util.GregorianCalendar;
import java.util.Date;
import java.util.Calendar;
import java.text.DateFormat;
import java.text.FieldPosition;
import javax.swing.*;
import javax.swing.plaf.BorderUIResource;
public final class DatePicker extends JPanel {
private static final long serialVersionUID = 1L;
private static final int startX = 10;
private static final int startY = 60;
private static final Font smallFont = new Font("Dialog", Font.PLAIN, 10);
private static final Font largeFont = new Font("Dialog", Font.PLAIN, 12);
private static final Insets insets = new Insets(2, 2, 2, 2);
private static final Color highlight = new Color(255, 255, 204);
private static final Color white = new Color(255, 255, 255);
private static final Color gray = new Color(204, 204, 204);
private Component selectedDay = null;
private GregorianCalendar selectedDate = null;
private GregorianCalendar originalDate = null;
private boolean hideOnSelect = true;
private final JButton backButton = new JButton();
private final JLabel monthAndYear = new JLabel();
private final 裂历JButton forwardButton = new JButton();
private final JLabel[] dayHeadings = new JLabel[]{
new JLabel("日"),
new JLabel("一"),
new JLabel("二"),
new JLabel("三"),
new JLabel("四"),
new JLabel("五"),
new JLabel("六")};
private final JLabel[][] daysInMonth = new JLabel[][]{
{new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()},
{new JLabel(),
new JLabel(),
new 掘态JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()},
{new JLabel(),
new JLabel(),
肆散搜 new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()},
{new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()},
{new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()},
{new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel(),
new JLabel()}
};
private final JButton todayButton = new JButton();
private final JButton cancelButton = new JButton();
public DatePicker() {
super();
selectedDate = getToday();
init();
}
public DatePicker(final Date initialDate) {
super();
if (null == initialDate)
selectedDate = getToday();
else
(selectedDate = new GregorianCalendar()).setTime(initialDate);
originalDate = new GregorianCalendar(
selectedDate.get(Calendar.YEAR),
selectedDate.get(Calendar.MONTH),
selectedDate.get(Calendar.DATE));
init();
}
public boolean isHideOnSelect() {
return hideOnSelect;
}
public void setHideOnSelect(final boolean hideOnSelect) {
if (this.hideOnSelect != hideOnSelect) {
this.hideOnSelect = hideOnSelect;
initButtons(false);
}
}
public Date getDate() {
if (null != selectedDate)
return selectedDate.getTime();
return null;
}
private void init() {
setLayout(new AbsoluteLayout());
this.setMinimumSize(new Dimension(161, 226));
this.setMaximumSize(getMinimumSize());
this.setPreferredSize(getMinimumSize());
this.setBorder(new BorderUIResource.EtchedBorderUIResource());
backButton.setFont(smallFont);
backButton.setText("<");
backButton.setMargin(insets);
backButton.setDefaultCapable(false);
backButton.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent evt) {
onBackClicked(evt);
}
});
add(backButton, new AbsoluteConstraints(10, 10, 20, 20));
monthAndYear.setFont(largeFont);
monthAndYear.setHorizontalAlignment(JTextField.CENTER);
monthAndYear.setText(formatDateText(selectedDate.getTime()));
add(monthAndYear, new AbsoluteConstraints(30, 10, 100, 20));
forwardButton.setFont(smallFont);
forwardButton.setText(">");
forwardButton.setMargin(insets);
forwardButton.setDefaultCapable(false);
forwardButton.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent evt) {
onForwardClicked(evt);
}
});
add(forwardButton, new AbsoluteConstraints(130, 10, 20, 20));
int x = startX;
for (int ii = 0; ii < dayHeadings.length; ii++) {
dayHeadings[ii].setOpaque(true);
dayHeadings[ii].setBackground(Color.LIGHT_GRAY);
dayHeadings[ii].setForeground(Color.WHITE);
dayHeadings[ii].setHorizontalAlignment(JLabel.CENTER);
add(dayHeadings[ii], new AbsoluteConstraints(x, 40, 21, 21));
x += 20;
}
x = startX;
int y = startY;
for (int ii = 0; ii < daysInMonth.length; ii++) {
for (int jj = 0; jj < daysInMonth[ii].length; jj++) {
daysInMonth[ii][jj].setOpaque(true);
daysInMonth[ii][jj].setBackground(white);
daysInMonth[ii][jj].setFont(smallFont);
daysInMonth[ii][jj].setHorizontalAlignment(JLabel.CENTER);
daysInMonth[ii][jj].setText("");
daysInMonth[ii][jj].addMouseListener(new MouseAdapter() {
public void mouseClicked(final MouseEvent evt) {
onDayClicked(evt);
}
});
add(daysInMonth[ii][jj], new AbsoluteConstraints(x, y, 21, 21));
x += 20;
}
x = startX;
y += 20;
}
initButtons(true);
calculateCalendar();
}
private void initButtons(final boolean firstTime) {
if (firstTime) {
final Dimension buttonSize = new Dimension(68, 24);
todayButton.setText("今天");
todayButton.setMargin(insets);
todayButton.setMaximumSize(buttonSize);
todayButton.setMinimumSize(buttonSize);
todayButton.setPreferredSize(buttonSize);
todayButton.setDefaultCapable(true);
todayButton.setSelected(true);
todayButton.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent evt) {
onToday(evt);
}
});
cancelButton.setText("取消");
cancelButton.setMargin(insets);
cancelButton.setMaximumSize(buttonSize);
cancelButton.setMinimumSize(buttonSize);
cancelButton.setPreferredSize(buttonSize);
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent evt) {
onCancel(evt);
}
});
} else {
this.remove(todayButton);
this.remove(cancelButton);
}
不知道你是否听说过swingx？它是swinglabs的项目，虽然现在已不再继续，但弊肆它提供了非常多好用的Swing扩展组件。其中包括JXDatepicker（日期输入控件），JXMonthView（月视图日历控件）。
swingx你可以到maven库里面搜索Jar包（google "maven repos"，出现很多maven库，随便找一个，搜索swingx，找最新的下载。如果你使用maven管理项目，那更好办了，把swingx放入依赖里面即可）。
JXDatepicker的使用方法：
// JXDatePicker提供了编辑器供用户直接输入日期，也提供了右侧按钮，点击按钮出现日期选择期供用户选岁卜搏择日期。
JXDatePicker datePicker = new JXDatePicker();
JXDatePicker datePicker1 = new JXDatePicker(new java.util.Date());
java.util.Date date = datePicker.getDate(); // 用户输入或选择日期后得到日期值
java.util.Date date1 = datePicker1.getDate(); // 用户输入或选择日期后得到日期值
//当然，你也可以指定用户输入日期的格式。
JXDatePicker datePicker2 = new JXDatePicker();
datePicker2.setFormats("yyyy.M.d", "yyyy-M-d");//可同时设置多种格式。setFormats(String...format)
JXMonthView的使用方法：
JXMonthView monthView = new JXMonthView();
monthView.setUnselectableDates(new java.util.Date());// 设置多个不可选择的日期，setUnselectableDates(java.util.Date ... date)
Set
monthView.setFlaggedDates(date1,date2)// 设置多个被标记了的日期
Set
Calendar calendar = monthView.getCalendar();// 获得日历对象
还有一些可set,get的属性罗列如下：
selectionMode
traversable
firstDayOfWeek
还有更多用法，看API吧。如果使用Maven，你可以自动下载javadoc和javasource。
有并辩腊开源的灶山，绝滑
http://sourceforge.net/projects/datepicker/
发到邮箱了
嗯。 。 开源组件 有这个伏橘慧 比如 openSwing 这伍虚个开源组件包里缺答就有这种控件。 以前我没事也写了一个这样的东东。