public class applet-clock extends Applet implements Runnable {
      private volatile Thread timer;       // The thread that displays clock
      private int lastxs, lastys, lastxm,
                  lastym, lastxh, lastyh;  // Dimensions used to draw hands 
      private SimpleDateFormat formatter;  // Formats the date displayed
      private String lastdate;             // String to hold date displayed
      private Font clockFaceFont;          // Font for number display on clock
      private Date currentDate;            // Used to get date to display
      private Color handColor;             // Color of main hands and dial
      private Color numberColor;           // Color of second hand and numbers
      private int xcenter = 80, ycenter = 55; // Center position
  
      public void init() {
          int x,y;
          lastxs = lastys = lastxm = lastym = lastxh = lastyh = 0;
          formatter = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", 
                                            Locale.getDefault());
          currentDate = new Date();
          lastdate = formatter.format(currentDate);
          clockFaceFont = new Font("Serif", Font.PLAIN, 14);
          handColor = Color.blue;
          //numberColor = Color.darkGray;
          numberColor = Color.red;
  
          try {
              //setBackground(new Color(Integer.parseInt(getParameter("bgcolor"), 16)));
              setBackground(Color.black);
          } catch (NullPointerException e) {
          } catch (NumberFormatException e) {
          }
          try {
              handColor = new Color(Integer.parseInt(getParameter("fgcolor1"),
                                                     16));
          } catch (NullPointerException e) {
          } catch (NumberFormatException e) {
          }
          try {
              numberColor = new Color(Integer.parseInt(getParameter("fgcolor2"),
                                                       16));
          } catch (NullPointerException e) {
          } catch (NumberFormatException e) {
          }
          resize(300,300);              // Set clock window size
      }
  
      // Paint is the main part of the program
      public void update(Graphics g) {
          int xh, yh, xm, ym, xs, ys;
          int s = 0, m = 10, h = 10;
          String today;
  
          currentDate = new Date();
          
          formatter.applyPattern("s");
          try {
              s = Integer.parseInt(formatter.format(currentDate));
          } catch (NumberFormatException n) {
              s = 0;
          }
          formatter.applyPattern("m");
          try {
              m = Integer.parseInt(formatter.format(currentDate));
          } catch (NumberFormatException n) {
              m = 10;
          }    
          formatter.applyPattern("h");
          try {
              h = Integer.parseInt(formatter.format(currentDate));
          } catch (NumberFormatException n) {
              h = 10;
          }
      
          // Set position of the ends of the hands
          xs = (int) (Math.cos(s * Math.PI / 30 - Math.PI / 2) * 45 + xcenter);
          ys = (int) (Math.sin(s * Math.PI / 30 - Math.PI / 2) * 45 + ycenter);
          xm = (int) (Math.cos(m * Math.PI / 30 - Math.PI / 2) * 40 + xcenter);
          ym = (int) (Math.sin(m * Math.PI / 30 - Math.PI / 2) * 40 + ycenter);
          xh = (int) (Math.cos((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30
                     + xcenter);
          yh = (int) (Math.sin((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30
                     + ycenter);
      
          // Get the date to print at the bottom
          formatter.applyPattern("EEE MMM dd HH:mm:ss yyyy");
          today = formatter.format(currentDate);
  
          g.setFont(clockFaceFont);
          // Erase if necessary
          g.setColor(getBackground());
          if (xs != lastxs || ys != lastys) {
              g.drawLine(xcenter, ycenter, lastxs, lastys);
              g.drawString(lastdate, 5, 125);
          }
          if (xm != lastxm || ym != lastym) {
              g.drawLine(xcenter, ycenter-1, lastxm, lastym);
              g.drawLine(xcenter-1, ycenter, lastxm, lastym); 
          }
          if (xh != lastxh || yh != lastyh) {
              g.drawLine(xcenter, ycenter-1, lastxh, lastyh);
              g.drawLine(xcenter-1, ycenter, lastxh, lastyh); 
          }
  
          // Draw date and hands
          g.setColor(numberColor);
          g.drawString(today, 5, 125);    
          g.drawLine(xcenter, ycenter, xs, ys);
          g.setColor(handColor);
          g.drawLine(xcenter, ycenter-1, xm, ym);
          g.drawLine(xcenter-1, ycenter, xm, ym);
          g.drawLine(xcenter, ycenter-1, xh, yh);
          g.drawLine(xcenter-1, ycenter, xh, yh);
          lastxs = xs; lastys = ys;
          lastxm = xm; lastym = ym;
          lastxh = xh; lastyh = yh;
          lastdate = today;
          currentDate = null;
      }
  
      public void paint(Graphics g) {
          g.setFont(clockFaceFont);
          // Draw the circle and numbers
          g.setColor(handColor);
          g.drawArc(xcenter-50, ycenter-50, 100, 100, 0, 360);
          g.setColor(numberColor);
          g.drawString("9", xcenter-45, ycenter+3); 
          g.drawString("3", xcenter+40, ycenter+3);
          g.drawString("12", xcenter-5, ycenter-37);
          g.drawString("6", xcenter-3, ycenter+45);
  
          // Draw date and hands
          g.setColor(numberColor);
          g.drawString(lastdate, 5, 125);    
          g.drawLine(xcenter, ycenter, lastxs, lastys);
          g.setColor(handColor);
          g.drawLine(xcenter, ycenter-1, lastxm, lastym);
          g.drawLine(xcenter-1, ycenter, lastxm, lastym);
          g.drawLine(xcenter, ycenter-1, lastxh, lastyh);
          g.drawLine(xcenter-1, ycenter, lastxh, lastyh); 
      }
  
      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 String getAppletInfo() {
          return "Title: A Clock \n"
              + "Author: Rachel Gollub, 1995 \n"
              + "An analog clock.";
      }
    
      public String[][] getParameterInfo() {
          String[][] info = {
              {"bgcolor", "hexadecimal RGB number", 
               "The background color. Default is the color of your browser."},
              {"fgcolor1", "hexadecimal RGB number", 
               "The color of the hands and dial. Default is blue."},
              {"fgcolor2", "hexadecimal RGB number", 
               "The color of the second hand and numbers. Default is dark gray."}
          };
          return info;
      }
  }