Java simple timer

Complete source code below will show you, how to create simple timer using java. Actually it has a problem. The problem that i mean is, it seem more slow than real timer.If you find how to solve it, i hope you can share with me by put a comment.

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COMPLETE SOURCE CODE FOR : JavaSimpleTimer.java
*******************************************************************

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class JavaSimpleTimer extends JPanel implements ActionListener
{
int miliseconds=0;
int seconds=0;
int minutes=0;

Timer myTimer;

Font timerFont=new Font("Verdana",Font.BOLD,24);

public JavaSimpleTimer()
{
myTimer=new Timer(10,this);

JFrame myFrame=new JFrame("Simple Timer");

myFrame.add(this);
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.setSize(500,500);
myFrame.setVisible(true);

myTimer.setInitialDelay(0);
myTimer.start();
}

public void paint(Graphics g)
{
super.paint(g);
String mili=Integer.toString(miliseconds);
String sec=Integer.toString(seconds);
String min=Integer.toString(minutes);

if(mili.length()==1)
{
 mili="0"+mili;
}
if(sec.length()==1)
{
 sec="0"+sec;
}
if(min.length()==1)
{
 min="0"+min;
}

g.setFont(timerFont);

g.drawString(min+" :",20,20);
g.drawString(sec+" :",80,20);
g.drawString(mili,140,20);
}

public void actionPerformed(ActionEvent event)
{
miliseconds=miliseconds+1;
if(miliseconds==100)
{
 miliseconds=0;
 seconds=seconds+1;
}
if(seconds==60)
{
 seconds=0;
 minutes=minutes+1;
}
repaint();
}

public static void main(String[]args)
{
JavaSimpleTimer myTest=new JavaSimpleTimer();
}
}

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JUST COMPILE AND EXECUTE IT
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Simple Shutdown Timer For Windows XP

Source code below will show you how to create simple shutdown timer for Windows XP.

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COMPLETE SOURCE CODE FOR : ShutdownComputer.java
************************************************

import javax.swing.JOptionPane;

public class ShutdownComputer
{
public static void main(String[]args)
{
 int wholeTimeBeforeShutdown=0;

 int hour=0;
 int minute=0;
 int second=0;

 try
 {
  String a=JOptionPane.showInputDialog(null,"HOUR","HOUR BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
  String b=JOptionPane.showInputDialog(null,"MINUTE","MINUTE BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
  String c=JOptionPane.showInputDialog(null,"SECOND","SECOND BEFORE SHUTDOWN",JOptionPane.QUESTION_MESSAGE);
 
  if((a==null)||(a.equals("")))
  {
   a="0";
  }
 
  if((b==null)||(b.equals("")))
  {
   b="0";
  }
 
  if((c==null)||(c.equals("")))
  {
   c="0";
  }
 
  int e=Integer.parseInt(a);
  int f=Integer.parseInt(b);
  int g=Integer.parseInt(c);
 
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+((e*60)*60);
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+(f*60);
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown+(g);
 
  wholeTimeBeforeShutdown=wholeTimeBeforeShutdown*1000;
 
  Thread.sleep(wholeTimeBeforeShutdown);
 
  Runtime.getRuntime().exec("shutdown -s -t 00 -f");
 }
 catch(Exception exception)
 {
  exception.printStackTrace();
 }
}
}

************************************************
JUST COMPILE AND EXECUTE IT
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