/*  
 * Timer  
 */  
 
 import java.awt.*;  
 import javax.swing.*;  
 
 public class DigitPane extends JPanel 
 {  
   private int second; 
   
   public Dimension getPreferredSize()
   {  
     FontMetrics fm = getFontMetrics(getFont());  
     return new Dimension(fm.stringWidth("00"), fm.getHeight());  
   }
   
   public void setValue(int newVal)
   {  
     if (second != newVal) 
     {  
       second = newVal;  
       repaint();  
     }  
   }  
   public int getValue()
   {  
     return second;  
   }
   
   private String pad(int value)
   {  
     return String.format("%02d", value);  
   }  
   
   protected void paintComponent(Graphics g)
   {  
     super.paintComponent(g);  
     g.setFont(new Font("LCD", Font.PLAIN, 24));  
     FontMetrics fm = getFontMetrics(g.getFont());  
     String text = pad(getValue());  
     int x = (getWidth() - fm.stringWidth(text)) / 2;  
     int y = ((getHeight()- fm.getHeight()) / 2) + fm.getAscent();  
     g.drawString(text, x, y);  
   }      
 }