import java.awt.*;
import java.io.*;
import java.awt.image.*;
import com.sun.image.codec.jpeg.*;
public class ScreenImage 
    { 
     public ScreenImage() 
         { 
         OutputStream out = null; 
         try 
             { 
             BufferedImage shot = (new Robot()).createScreenCapture(new Rectangle(0, 0, 800,600)); 
             out = new BufferedOutputStream(new FileOutputStream("shot.jpg")); 
             JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); 
             encoder.encode(shot); 
         } 
         catch (Exception exc) 
             { 
             exc.printStackTrace(); 
         } 
         finally 
             { 
             try 
                 { 
                 if (out != null) 
                     { 
                     out.close(); 
                 } 
                 System.exit(0); 
             } 
             catch (Throwable t) {} 
         } 
     } 
     public static void main(String[] args) 
         { 
         new ScreenImage(); 
     }
}

// Updates: 2004.07.16


import java.awt.*;
import javax.swing.*;


/**
 * Displays a centered image in the available area. If the picture is too big
 * (width or height), a zoom will be applied in order to show the full image.
 * This class works also if the picture is in a jar file.
 * @author Michel Deriaz 
 */
public class Picture extends JPanel {
  private Image img;      


  /**
   * Loads the specified image, which must be a JPG, a GIF, or a PNG.
   * @param file the file to load
   */  
  public Picture(String file) {
    img = new ImageIcon(getClass().getResource(file)).getImage();
    repaint(); 
  }
  

  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (img == null) return;
    int w = img.getWidth(this);  
    int h = img.getHeight(this);
    boolean zoom = (w > getWidth() || h > getHeight());
    if (zoom) g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
    else g.drawImage(img, (getWidth()-w)/2, (getHeight()-h)/2, this);
  }
}