Swing__Calendar

这个日历是改出来的。。。

JPanel版的

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;

import xserver.inventory.res.DateTools;

public class CalendarControl extends JPanel implements ActionListener
{
	public static void main(String[] av)
	{
		JFrame f = new JFrame("Cal");
		Container c = f.getContentPane();
		c.setLayout(new FlowLayout());
		c.add(new CalendarControl());

		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.pack();
		f.setVisible(true);
	}

	private JButton b0;
	protected JButton btnDays[][];
	private JComboBox monthChoice = new JComboBox();
	private JComboBox yearChoice = new JComboBox();

	protected int yy, mm, dd;
	protected int firstDayWeek = 0;
	private int activeDay = -1;

	private Calendar calendar = new GregorianCalendar();
	protected final int thisYear = calendar.get(Calendar.YEAR);
	protected final int thisMonth = calendar.get(Calendar.MONTH);// 从0开始

	CalendarControl()
	{
		super();
		setYYMMDD(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar
				.get(Calendar.DAY_OF_MONTH));
		buildGUI();
		recompute();
	}

	CalendarControl(int year, int month, int today)
	{
		super();
		setYYMMDD(year, month, today);
		buildGUI();
		recompute();
	}

	private void buildGUI()
	{
		getAccessibleContext().setAccessibleDescription("Calendar not accessible yet. Sorry!");
		setBorder(BorderFactory.createEtchedBorder());
		setLayout(new BorderLayout());

		yearsPanel();
		daysPanel();
	}

	private void setYYMMDD(int year, int month, int today)
	{
		yy = year;
		mm = month;
		dd = today;
	}

	public String getDateString()
	{
		return yy + "-" + mm + "-" + dd;
	}

	private void yearChoice()
	{
		for (int i = yy - 5; i < yy + 20; i++)
			yearChoice.addItem(Integer.toString(i));
		yearChoice.setSelectedItem(Integer.toString(yy));
		yearChoice.addActionListener(this);
	}

	private void monthChoice()
	{
		String[] months = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12" };
		for (int i = 0; i < months.length; i++)
			monthChoice.addItem(months[i]);

		monthChoice.setSelectedItem(months[mm]);
		yearChoice.addActionListener(this);

		monthChoice.getAccessibleContext().setAccessibleName("Months");
		monthChoice.getAccessibleContext().setAccessibleDescription("Choose a month of the year");
	}

	private void yearsPanel()
	{
		JPanel ymPanel = new JPanel();// 年月面板
		yearChoice();
		monthChoice();
		ymPanel.add(yearChoice);
		ymPanel.add(monthChoice);
		add(BorderLayout.CENTER, ymPanel);
		monthChoice.addActionListener(this);
	}

	public void actionPerformed(ActionEvent e) // 监听年月
	{
		JComboBox comtobox = (JComboBox) e.getSource();
		if (comtobox == yearChoice)
		{
			int i = yearChoice.getSelectedIndex();
			if (i >= 0)
			{
				yy = Integer.parseInt(yearChoice.getSelectedItem().toString());
				recompute();
				System.out.println("xxx");
			}
			return;
		}

		if (comtobox == monthChoice)
		{
			int i = monthChoice.getSelectedIndex();
			if (i >= 0)
			{
				mm = i;// 月分下标由0开始
				recompute();
			}
			return;
		}
	}

	private void daysPanel()
	{
		JPanel daysPanel = new JPanel();// 日期面板
		daysPanel.setLayout(new GridLayout(7, 7));
		btnDays = new JButton[6][7]; // first row is days

		daysPanel.add(b0 = new JButton("日"));
		daysPanel.add(new JButton("一"));
		daysPanel.add(new JButton("二"));
		daysPanel.add(new JButton("三"));
		daysPanel.add(new JButton("四"));
		daysPanel.add(new JButton("五"));
		daysPanel.add(new JButton("六"));

		ActionListener dateSetter = new ActionListener()// 内部类，监听
		{
			public void actionPerformed(ActionEvent e)
			{
				String day = e.getActionCommand();
				if (!day.equals(""))
				{
					setDayActive(Integer.parseInt(day));// 设置选中的高亮
					dd = Integer.parseInt(day);
					System.out.println(getDateString());
				}
			}
		};

		for (int i = 0; i < 6; i++)
			for (int j = 0; j < 7; j++)
			{
				daysPanel.add(btnDays[i][j] = new JButton(""));
				btnDays[i][j].addActionListener(dateSetter);
			}
		add(BorderLayout.SOUTH, daysPanel);
	}

	public final static int MONTH_DAYS[] = { // 平年2月为28天
	31, 28, 31, 30, /* jan feb mar apr */
	31, 30, 31, 31, /* may jun jul aug */
	30, 31, 30, 31 /* sep oct nov dec */
	};

	public int getOneDayWeek(int yy, int mm, int dd)
	{
		Calendar calendar = new GregorianCalendar(yy, mm, dd);
		return calendar.get(Calendar.DAY_OF_WEEK) - 1;
	}

	/** Compute which days to put where, in the Cal panel */
	protected void recompute()
	{
		if (mm < 0 || mm > 11)
		{
			throw new IllegalArgumentException("Month " + mm + " bad, must be 0-11");
		}

		clearDayActive();

		calendar = new GregorianCalendar(yy, mm, dd);
		firstDayWeek = DateTools.getMohtnFirstDayWeek(yy, mm);

		for (int i = 0; i < firstDayWeek; i++)// 一个月的一号之前的那几个空天
		{
			btnDays[0][i].setText("");
		}

		int daysCount = MONTH_DAYS[mm];
		if (DateTools.isLeap(calendar.get(Calendar.YEAR)) && mm == 1) ++daysCount; // 闰年二月多一天

		for (int i = 1; i <= daysCount; i++)// 画一个月
		{
			JButton b = btnDays[(firstDayWeek + i - 1) / 7][(firstDayWeek + i - 1) % 7];
			b.setText(Integer.toString(i));
			System.out.println(i);
		}

		for (int i = firstDayWeek + daysCount; i < 6 * 7; i++)// 剩余空格
		{
			btnDays[(i) / 7][(i) % 7].setText("");
		}

		if (thisYear == yy && mm == thisMonth) setDayActive(dd); // shade the box for today

		repaint();
	}

	public void setDayActive(int newDay)// 设置高亮
	{
		clearDayActive();
		if (newDay <= 0) dd = new GregorianCalendar().get(Calendar.DAY_OF_MONTH);
		else dd = newDay;

		Component square = btnDays[(firstDayWeek + newDay - 1) / 7][(firstDayWeek + newDay - 1) % 7];
		square.setBackground(Color.red);
		square.repaint();
		activeDay = newDay;
	}

	private void clearDayActive() // 取消高亮
	{
		JButton b;
		if (activeDay > 0)
		{
			b = btnDays[(firstDayWeek + activeDay - 1) / 7][(firstDayWeek + activeDay - 1) % 7];
			b.setBackground(b0.getBackground());
			b.repaint();
			activeDay = -1;
		}
	}

}

JDialog版

package xserver.inventory.res;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class CalendarDialog extends JDialog implements ActionListener
{
	private JButton b0;
	private JButton btnDays[][];
	private JComboBox monthChoice = new JComboBox();
	private JComboBox yearChoice = new JComboBox();

	private int yy, mm, dd;
	private int firstDayWeek = 0;
	private int activeDay = -1;

	private Calendar calendar = new GregorianCalendar();
	private final int thisYear = calendar.get(Calendar.YEAR);
	private final int thisMonth = calendar.get(Calendar.MONTH);// 从0开始

	public CalendarDialog(JFrame parent)
	{
		super(parent, "日历", true);
		setYYMMDD(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar
				.get(Calendar.DAY_OF_MONTH));
		buildGUI();
		recompute();

		Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
		int high = (int) screenSize.getHeight()/ 4;
		int width = (int) screenSize.getWidth()/ 2;	
		setLocation(width, high);
		
		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
		pack();
		setVisible(true);
	}

	private void buildGUI()
	{
		getAccessibleContext().setAccessibleDescription("Calendar not accessible yet. Sorry!");
		setLayout(new BorderLayout());

		yearsPanel();
		daysPanel();
	}

	private void setYYMMDD(int year, int month, int today)
	{
		yy = year;
		mm = month;
		dd = today;
	}

	public String getDateString()
	{
		return yy + "-" + (mm + 1) + "-" + dd;
	}

	private void yearChoice()
	{
		for (int i = yy - 5; i < yy + 20; i++)
			yearChoice.addItem(Integer.toString(i));
		yearChoice.setSelectedItem(Integer.toString(yy));
		yearChoice.addActionListener(this);
	}

	private void monthChoice()
	{
		String[] months = { "1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月" };
		for (int i = 0; i < months.length; i++)
			monthChoice.addItem(months[i]);

		monthChoice.setSelectedItem(months[mm]);
		yearChoice.addActionListener(this);

		monthChoice.getAccessibleContext().setAccessibleName("Months");
		monthChoice.getAccessibleContext().setAccessibleDescription("Choose a month of the year");
	}

	private void yearsPanel()
	{
		JPanel ymPanel = new JPanel();// 年月面板
		yearChoice();
		monthChoice();
		ymPanel.add(yearChoice);
		ymPanel.add(monthChoice);
		add(BorderLayout.CENTER, ymPanel);
		monthChoice.addActionListener(this);
	}

	public void actionPerformed(ActionEvent e) 
	{
		try
		{
			JComboBox comtobox = (JComboBox) e.getSource();
			if (comtobox == yearChoice)
			{
				int i = yearChoice.getSelectedIndex();
				if (i >= 0)
				{
					yy = Integer.parseInt(yearChoice.getSelectedItem().toString());
					recompute();
				}
				return;
			}

			if (comtobox == monthChoice)
			{
				int i = monthChoice.getSelectedIndex();
				if (i >= 0)
				{
					mm = i;// 月分下标由0开始
					recompute();
				}
				return;
			}
		}
		catch (ClassCastException cce)
		{
		}

		String day = e.getActionCommand();
		if (!day.equals(""))
		{
			setDayActive(Integer.parseInt(day));// 设置选中的高亮
			dd = Integer.parseInt(day);
			setVisible(false);
			System.out.println(this.getDateString());
		}
	}

	private void daysPanel()
	{
		JPanel daysPanel = new JPanel();// 日期面板
		daysPanel.setLayout(new GridLayout(7, 7));
		btnDays = new JButton[6][7]; // first row is days

		daysPanel.add(b0 = new JButton("日"));
		daysPanel.add(new JButton("一"));
		daysPanel.add(new JButton("二"));
		daysPanel.add(new JButton("三"));
		daysPanel.add(new JButton("四"));
		daysPanel.add(new JButton("五"));
		daysPanel.add(new JButton("六"));

		for (int i = 0; i < 6; i++)
			for (int j = 0; j < 7; j++)
			{
				daysPanel.add(btnDays[i][j] = new JButton(""));
				btnDays[i][j].addActionListener(this);
			}
		add(BorderLayout.SOUTH, daysPanel);
	}

	private final static int MONTH_DAYS[] = { // 平年2月为28天
	31, 28, 31, 30, /* jan feb mar apr */
	31, 30, 31, 31, /* may jun jul aug */
	30, 31, 30, 31 /* sep oct nov dec */
	};

	public int getOneDayWeek(int yy, int mm, int dd)
	{
		Calendar calendar = new GregorianCalendar(yy, mm, dd);
		return calendar.get(Calendar.DAY_OF_WEEK) - 1;
	}

	/** Compute which days to put where, in the Cal panel */
	private void recompute()
	{
		if (mm < 0 || mm > 11)
		{
			throw new IllegalArgumentException("Month " + mm + " bad, must be 0-11");
		}

		clearDayActive();

		calendar = new GregorianCalendar(yy, mm, dd);
		firstDayWeek = DateTools.getMohtnFirstDayWeek(yy, mm);

		for (int i = 0; i < firstDayWeek; i++)// 一个月的一号之前的那几个空天
		{
			btnDays[0][i].setText("");
		}

		int daysCount = MONTH_DAYS[mm];
		if (DateTools.isLeap(calendar.get(Calendar.YEAR)) && mm == 1) ++daysCount; // 闰年二月多一天

		for (int i = 1; i <= daysCount; i++)// 画一个月
		{
			JButton b = btnDays[(firstDayWeek + i - 1) / 7][(firstDayWeek + i - 1) % 7];
			b.setText(Integer.toString(i));
		}

		for (int i = firstDayWeek + daysCount; i < 6 * 7; i++)// 剩余空格
		{
			btnDays[(i) / 7][(i) % 7].setText("");
		}

		if (thisYear == yy && mm == thisMonth) setDayActive(dd); // shade the box for today

		repaint();
	}

	private void setDayActive(int newDay)// 设置高亮
	{
		clearDayActive();
		if (newDay <= 0) dd = new GregorianCalendar().get(Calendar.DAY_OF_MONTH);
		else dd = newDay;

		Component square = btnDays[(firstDayWeek + newDay - 1) / 7][(firstDayWeek + newDay - 1) % 7];
		square.setBackground(Color.red);
		square.repaint();
		activeDay = newDay;
	}

	private void clearDayActive() // 取消高亮
	{
		JButton b;
		if (activeDay > 0)
		{
			b = btnDays[(firstDayWeek + activeDay - 1) / 7][(firstDayWeek + activeDay - 1) % 7];
			b.setBackground(b0.getBackground());
			b.repaint();
			activeDay = -1;
		}
	}
}