Java Example Image Size Increaser

import java.awt.*; 
 import java.awt.event.*; 
 import javax.swing.*; 
 public class JavaExampleImageSizeIncreaser extends JApplet implements ActionListener 
    { 
      private ImageIcon Img = new ImageIcon("java.jpg"); 
      private JButton BtnZoom = new JButton("Click For Zoom View..!"); 
      private int Wdth,Hght; 
      Container Cntnr = getContentPane(); 
      public void init() 
      { 
        Cntnr.setLayout(new FlowLayout()); 
        BtnZoom.addActionListener(this); 
        Cntnr.add(BtnZoom); 
        Wdth = Img.getIconWidth(); 
        Hght = Img.getIconHeight(); 
      } 
        public void actionPerformed(ActionEvent Evnt) 
         { 
           Wdth = Wdth * 2; 
           Hght = Hght * 2; 
           repaint(); 
         } 
           public void paint(Graphics gr) 
            { 
               super.paint(gr); 
               gr.drawImage(Img.getImage(),0,0,Wdth,Hght,this); 
            } 
    } 
 /*<applet code= JavaExampleImageSizeIncreaser.class Height=320 width=260></applet>*/