datechooserjbutton.java

Java倒计时程序 为北京奥运会倒计时100天而写

package countdown;

import java.util.Date;
import java.util.Calendar;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.text.ParseException ;
import java.awt.Color ;
import java.awt.Font;
import java.awt.Point ;
import java.awt.Dimension ;
import java.awt.BorderLayout ;
import java.awt.FlowLayout ;
import java.awt.GridLayout ;
import java.awt.Component ;
import java.awt.Cursor ;
import java.awt.Frame ;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
//import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JSpinner ;
import javax.swing.JSpinner.NumberEditor ;
import javax.swing.SpinnerNumberModel;
import javax.swing.SwingUtilities;
import javax.swing.SwingConstants ;
import javax.swing.event.ChangeListener ;
import javax.swing.event.ChangeEvent ;
import javax.swing.border.LineBorder ;



public class DateChooserJButton extends JButton {
	private DateChooser dateChooser =null;
	private String preLabel ="" ;
	
	public DateChooserJButton() {
		this(getNowDate()) ;
	}
	
	public DateChooserJButton(SimpleDateFormat df , String dateString) {
		this() ;
		setText(df,dateString) ;
	}
	
	public DateChooserJButton(Date date) {
		this("",date);
	}
	
	public DateChooserJButton(String preLabel , Date date) {
		if (preLabel!=null) 
			this.preLabel = preLabel ;
		setDate(date) ;
		setBorder(null) ;
		setCursor(new Cursor(Cursor.HAND_CURSOR)) ;
		super.addActionListener( new ActionListener() 
		{
			public void actionPerformed(ActionEvent e) {
				if (dateChooser==null) 
					dateChooser = new DateChooser();
				Point p = getLocationOnScreen() ;
				p.y = p.y+30 ;
				dateChooser.showDateChooser(p) ;
			} 
		}) ;
	} 
	
	private static Date getNowDate() {
		return Calendar.getInstance().getTime() ;
	} 
	
	private static SimpleDateFormat getDefaultDateFormat() {
		return new SimpleDateFormat("yyyy骞碝M鏈坉d鏃