Java Applet Program to Draw a Car

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Car extends Applet implements ActionListener
{ 
 int x, y, z;
 int t1,t2;
 Button b1, b2;
 String msg=" ";
void slep()            
 {
  try 
  {
   Thread.sleep(100);
  }
   catch(Exception ex) 
   {
   }
 }
public void init()
 {
  t1=0;
  t2=1;
  x=20; 
  y=60;
  setLayout(new FlowLayout(FlowLayout.CENTER));
  Label l=new Label("webeduclick");
  b1=new Button("Forward");
  add(b1);
  b2=new Button("Stop");
  add(b2);
  b1.addActionListener(this);
  b2.addActionListener(this);
 }
public void start()
 {
 }
public void actionPerformed(ActionEvent e)
 {
  String s=e.getActionCommand();
  if(s.equals("Forward"))
  {
   msg="Forward";
   repaint();
  }
  else if(s.equals("Stop"))
  {
   msg="  ";
   repaint(); 
  }
 }
public void paint(Graphics g)
{
  setBackground(Color.black);
  z=getWidth();
  Color c1=new Color(20,160,200);
  Color c2=new Color(200,60,200);
  g.setColor(c1);
  g.drawLine(0,y+75,z,y+75);
  g.setColor(Color.red);
  g.fillRoundRect(x,y+20,100,40,5,5);
  g.fillArc(x+90,y+20,20,40,270,180);
  g.setColor(Color.BLUE);
  g.fillRoundRect(x+10,y,70,25,10,10);
  g.setColor(Color.white);
  g.fillRect(x+20,y+5,20,25);
  g.fillRect(x+50,y+5,20,25);
  g.setColor(Color.black);
  g.fillRoundRect(x+55,y+10,10,20,10,10);
  g.fillOval(x+10,y+50,25,25);
  g.fillOval(x+60,y+50,25,25);
  g.setColor(Color.white);
  g.fillOval(x+15,y+55,10,10);
  g.fillOval(x+65,y+55,10,10);
    x=x+10; 
    slep();
 if(msg.equals("Forward"))
 {          
  if(x+120<z)
  {
    x=x+1;
    showStatus("Press Forward for Starting Car");
    repaint();
  }
 }
}
}

Output: