www.pudn.com > bookstore2.rar > DigitalClock.java

/* 
 * Copyright (c) 2005 Sun Microsystems, Inc.  All rights reserved.  U.S. 
 * Government Rights - Commercial software.  Government users are subject 
 * to the Sun Microsystems, Inc. standard license agreement and 
 * applicable provisions of the FAR and its supplements.  Use is subject 
 * to license terms. 
 * 
 * This distribution may include materials developed by third parties. 
 * Sun, Sun Microsystems, the Sun logo, Java and J2EE are trademarks 
 * or registered trademarks of Sun Microsystems, Inc. in the U.S. and 
 * other countries. 
 * 
 * Copyright (c) 2005 Sun Microsystems, Inc. Tous droits reserves. 
 * 
 * Droits du gouvernement americain, utilisateurs gouvernementaux - logiciel 
 * commercial. Les utilisateurs gouvernementaux sont soumis au contrat de 
 * licence standard de Sun Microsystems, Inc., ainsi qu'aux dispositions 
 * en vigueur de la FAR (Federal Acquisition Regulations) et des 
 * supplements a celles-ci.  Distribue par des licences qui en 
 * restreignent l'utilisation. 
 * 
 * Cette distribution peut comprendre des composants developpes par des 
 * tierces parties. Sun, Sun Microsystems, le logo Sun, Java et J2EE 
 * sont des marques de fabrique ou des marques deposees de Sun 
 * Microsystems, Inc. aux Etats-Unis et dans d'autres pays. 
 */ 
 
 
package clock; 
 
import java.util.*; 
import java.awt.*; 
import java.applet.*; 
import java.text.*; 
 
 
public class DigitalClock extends Applet implements Runnable { 
    Thread timer; // The thread that displays clock 
    DateFormat formatter; // Formats the date displayed 
    String lastdate; // String to hold date displayed 
    Date currentDate; // Used to get date to display 
    Color numberColor; // Color of numbers 
    Font clockFaceFont; 
    Locale locale; 
    String language; 
    String country; 
 
    public void init() { 
        numberColor = Color.black; 
 
        try { 
            language = getParameter("language"); 
        } catch (Exception E) { 
        } 
 
        try { 
            country = getParameter("country"); 
        } catch (Exception E) { 
        } 
 
        if (country == null) { 
            country = ""; 
        } else { 
            System.err.println(country); 
        } 
 
        if (language == null) { 
            locale = Locale.getDefault(); 
        } else { 
            System.err.println(language); 
            locale = new Locale(language, country); 
        } 
 
        System.err.println(locale.getDisplayName()); 
 
        try { 
            setBackground(new Color(Integer.parseInt(getParameter("bgcolor"), 16))); 
        } catch (Exception E) { 
        } 
 
        try { 
            numberColor = 
                new Color(Integer.parseInt(getParameter("fgcolor"), 16)); 
        } catch (Exception E) { 
        } 
 
        formatter = 
            DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.MEDIUM, 
                locale); 
        currentDate = new Date(); 
        lastdate = formatter.format(currentDate); 
        clockFaceFont = new Font("Sans-Serif", Font.PLAIN, 14); 
        resize(275, 25); // Set clock window size 
    } 
 
    // Paint is the main part of the program 
    public void paint(Graphics g) { 
        String today; 
        currentDate = new Date(); 
        formatter = 
            DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.MEDIUM, 
                locale); 
        today = formatter.format(currentDate); 
        g.setFont(clockFaceFont); 
 
        // Erase and redraw   
        g.setColor(getBackground()); 
        g.drawString(lastdate, 0, 12); 
 
        g.setColor(numberColor); 
        g.drawString(today, 0, 12); 
        lastdate = today; 
        currentDate = null; 
    } 
 
    public void start() { 
        timer = new Thread(this); 
        timer.start(); 
    } 
 
    public void stop() { 
        timer = null; 
    } 
 
    public void run() { 
        Thread me = Thread.currentThread(); 
 
        while (timer == me) { 
            try { 
                Thread.currentThread() 
                      .sleep(100); 
            } catch (InterruptedException e) { 
            } 
 
            repaint(); 
        } 
    } 
 
    public void update(Graphics g) { 
        paint(g); 
    } 
 
    public String getAppletInfo() { 
        return "Digital Clock."; 
    } 
 
    public String[][] getParameterInfo() { 
        String[][] info = 
        { 
            { 
                "bgcolor", "hexadecimal RGB number", 
                "The background color. Default is the color of your browser." 
            }, 
            { "fgcolor", "hexadecimal RGB number", "The color of the date." } 
        }; 
 
        return info; 
    } 
}