Как использовать JFileChooser для отображения изображения в JFrame или JPanel

Я создал программу, которая может изменить формат изображения. Все работает, но когда я открываю изображение через JFileChooser, я получаюjava.lang.ClassCastException, Пожалуйста, кто-нибудь может мне помочь. Я думаю, что я делаю ошибку при использовании средства выбора файлов. Я новичок, пожалуйста, кто-нибудь может помочь мне как можно скорее?

 package helloWorld;

   import java.io.*;
   import java.util.TreeSet;
   import java.awt.*;
   import java.awt.event.*;
   import java.awt.geom.AffineTransform;
   import java.awt.image.*;
   import javax.imageio.*;
   import javax.swing.*;
   import javax.swing.filechooser.FileNameExtensionFilter;

   public class SaveImage extends Component implements Action Listener {

    String descs[] = {
    "Original", 
        "Convolve : LowPass",
        "Convolve : Sharpen", 
        "LookupOp",
    };

    int opIndex;
    private BufferedImage bi, biFiltered;
    private BufferedImage temp;
    int w, h;

    public static final float[] SHARPEN3x3 = { // sharpening filter kernel
        0.f, -1.f,  0.f,
       -1.f,  5.f, -1.f,
        0.f, -1.f,  0.f
    };

    public static final float[] BLUR3x3 = {
        0.1f, 0.1f, 0.1f,    // low-pass filter kernel
        0.1f, 0.2f, 0.1f,
        0.1f, 0.1f, 0.1f
    };

    public SaveImage()

    {

        try {
            bi = ImageIO.read(new File("")); // yahan kisi image ka path daal de
            w = bi.getWidth(null);
            h = bi.getHeight(null);
            if (bi.getType() != BufferedImage.TYPE_INT_RGB) {
                BufferedImage bi2 =
                    new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
                Graphics big = bi2.getGraphics();
                big.drawImage(bi, 0, 0, null);
                biFiltered = bi = bi2;
            }
        } catch (IOException e) {
            System.out.println("Image could not be read");
            System.exit(1);
        }
    }


    public void setimg( String path){}


    public Dimension getPreferredSize() {
        return new Dimension(w, h);
    }

    String[] getDescriptions() {
        return descs;
    }

    void setOpIndex(int i) {
        opIndex = i;
    }

    public void paint(Graphics g) {
        filterImage();
        g.drawImage(biFiltered, 0, 0, null);
    }

    int lastOp;
    public void filterImage() {
        BufferedImageOp op = null;

        if (opIndex == lastOp) {
            return;
        }
        lastOp = opIndex;
        switch (opIndex) {

        case 0: biFiltered = bi; /* original */
                return; 
        case 1:  /* low pass filter */
        case 2:  /* sharpen */
            float[] data = (opIndex == 1) ? BLUR3x3 : SHARPEN3x3;
            op = new ConvolveOp(new Kernel(3, 3, data),
                                ConvolveOp.EDGE_NO_OP,
                                null);

            break;

        case 3 : /* lookup */
            byte lut[] = new byte[256];
            for (int j=0; j<256; j++) {
                lut[j] = (byte)(256-j); 
            }
            ByteLookupTable blut = new ByteLookupTable(0, lut); 
            op = new LookupOp(blut, null);
            break;
        }


        biFiltered = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        op.filter(bi, biFiltered);
    }

    /* Return the formats sorted alphabetically and in lower case */
    public String[] getFormats() {
        String[] formats = ImageIO.getWriterFormatNames();
        TreeSet<String> formatSet = new TreeSet<String>();
        for (String s : formats) {
            formatSet.add(s.toLowerCase());
        }
        return formatSet.toArray(new String[0]);
    }


     public void actionPerformed(ActionEvent e) {

         if (e.getActionCommand()=="browse")
         {
             //yahan pe bhundd h browse ka
             JFileChooser file = new JFileChooser();
            file.setCurrentDirectory(new File(System.getProperty("user.home")));
            FileNameExtensionFilter filter = new             FileNameExtensionFilter("*.Images","jpg", "gif", "png" );
            file.addChoosableFileFilter(filter);
            int result = file.showSaveDialog(null);
            if (result==JFileChooser.APPROVE_OPTION)
            {
                File selectedFile = file.getSelectedFile();
                String Path = selectedFile.getAbsolutePath();
            try{
                setimg(Path);// bi = ImageIO.read(new File(Path));
            //  temp = new BufferedImage(Path);//       label.setIcon(ResizeImage(Path));
                //}
            //  catch(IOException e1){
                    System.out.println("file not found");
                //}
            }
            else if(result== JFileChooser.CANCEL_OPTION)
            {
            //  ImageIcon Mimage = new      ImageIcon("C:\\Users\\Hasnain\\Downloads\\1.jpg");
                System.out.println("No file choosed");
                //label.setIcon(Mimage);
            }    
         }

         JComboBox cb = (JComboBox)e.getSource();
         if (cb.getActionCommand().equals("SetFilter")) {
             setOpIndex(cb.getSelectedIndex());
             repaint();
         } else if (cb.getActionCommand().equals("Formats")) {
             /* Save the filtered image in the selected format.
              * The selected item will be the name of the format to use
              */
             String format = (String)cb.getSelectedItem();
             /* Use the format name to initialise the file suffix.
              * Format names typically correspond to suffixes
              */
             File saveFile = new File("savedimage."+format);
             JFileChooser chooser = new JFileChooser();
             chooser.setSelectedFile(saveFile);
             int rval = chooser.showSaveDialog(cb);
             if (rval == JFileChooser.APPROVE_OPTION) {
                 saveFile = chooser.getSelectedFile();
                 /* Write the filtered image in the selected format,
                  * to the file chosen by the user.
                  */
                 try {
                     ImageIO.write(biFiltered, format, saveFile);
                 } catch (IOException ex) {
                 }
             }
         }
    };

    public static void main(String s[]) {
        JButton button = new JButton("Browse");
        button.setBounds(300, 300, 100, 40);

        JFrame f = new JFrame("Save Image Sample");
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        });
        SaveImage si = new SaveImage();
        f.add("Center", si);
        JComboBox choices = new JComboBox(si.getDescriptions());
        choices.setActionCommand("SetFilter");
        choices.addActionListener(si);
        JComboBox formats = new JComboBox(si.getFormats());
        formats.setActionCommand("Formats");
        formats.addActionListener(si);
        JPanel panel = new JPanel();
        panel.add(button);
        button.setEnabled(true);

        panel.add(choices);
        panel.add(new JLabel("Save As"));
        panel.add(formats);
        f.add("South", panel);
        f.pack();
        f.setVisible(true);
        button.addActionListener(si);
        button.setActionCommand("browse");
    }
}  

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