JPEG File Preview in a panel

Question

Hi All
I had a need to give a preview of a jpeg or a bitmap file selected in a file chooser.
i created a panel and set the image selected as imageicon of the panel.
This works well except for the files which are named as "DSC0231" or "IMG_089"
i have no idea as to what is wrong...
can anyone guide me?

Answer 1

public class ImageBrowser {
private File selected;
     public ImageBrowser(File selected) {
          this.selected=selected;
new AppFrame(this.selected).setVisible(true);
class AppFrame extends JFrame {
private ImageCanvas canvas = new ImageCanvas();
File chosen;
public AppFrame(File selected) {
     String new_file=selected.toString().replaceAll("\\\\","/");
     chosen=new File(new_file);
     System.out.println("inside the new one:"+chosen.getAbsolutePath());
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setTitle("My APP");
setSize(500, 500);
this.setLocation(100, 100);
initFrame();
onOpen();
private void initFrame()
JScrollPane scrollPane = new JScrollPane(canvas);
setContentPane(scrollPane);
protected void onOpen()
if (chosen != null && chosen.exists() && chosen.isFile())
     System.out.println("inside the new one:"+chosen.getAbsolutePath());
try
     String file_path= chosen.toString();
//ImageIcon icon = new ImageIcon(chosen.toURL());
ImageIcon icon = new ImageIcon(utils.loadbitmap(file_path));
canvas.setImageIcon(icon);
                    getContentPane().validate();
setTitle(chosen.getName());
//this.setSize(icon.getIconWidth(), icon.getIconHeight());
catch (Exception e)
setTitle(e.getLocalizedMessage());
* Canvas for displaying images.
class ImageCanvas extends JPanel {
private ImageIcon imageIcon = null;
private Dimension size = null;
public ImageCanvas()
setBackground(Color.white);
public void setImageIcon(ImageIcon icon)
this.imageIcon = icon;
if (icon != null)
     System.out.println("hello");
size = new Dimension(icon.getIconWidth(), icon.getIconHeight());
repaint();
public ImageIcon getImageIcon() {
return this.imageIcon;
public void paint(Graphics g) {
super.paint(g);
if (imageIcon != null) {
imageIcon.paintIcon(this, g, 0, 0);
public Dimension getPreferredSize() {
if (imageIcon == null) {
return super.getPreferredSize();
} else {
return size;
that is the code i found somewhere to do the job... and while calling,
File selected = new File(selected_file);
new ImageBrowser(selected);
meanwhile is there any limitation on the size of the image for an imageicon??
i mean the number of pixels??
thanx