digitalclock.java

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/*
 * Copyright (c) 2002 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) 2002 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, 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;
    }
}