How to store and retrieve image(byte array) from sqlite database in netbeans?

This is my code to insert image into the database:

private void tbSaveActionPerformed(java.awt.event.ActionEvent evt) {                                       
    ImageIcon imgIcon = (ImageIcon) tbCapture.getIcon();
    Image im = imgIcon.getImage();
    byte[] imgByte = getByteArrayFromImage(im);
    try{
        db.putData("update patient set image ='"+Arrays.toString(imgByte)+"' where id = '"+wtid.getText()+"'");
        JOptionPane.showMessageDialog(null, "Image Inserted");
    }
    catch(Exception ex){

    }
}                                      

private byte[] getByteArrayFromImage(Image img){
byte[] imgByte = null;
try {
int imgWidth = img.getWidth(null);
int imgHeight = img.getHeight(null);
int imgType = BufferedImage.TYPE_INT_ARGB; // you can experiment with this one
BufferedImage bi = new BufferedImage(imgWidth, imgHeight, imgType);
Graphics2D g2 = bi.createGraphics();
g2.drawImage(img, 0, 0, null);
g2.dispose();

ByteArrayOutputStream baos = new ByteArrayOutputStream();
if (ImageIO.write(bi, "JPEG", baos)) {
imgByte = baos.toByteArray();
}

} catch (Exception ex) {

}

return imgByte;

}

And this is my code to retrieve the image and display in jLabel:

try{
        ResultSet rset = db.getData("select image from patient where name = '"+tPatientid.getText()+"'");
        while (rset.next()){
        byte[] imagedata = rset.getBytes("image");
        if (imagedata != null){
        ImageIcon imageIcon = new ImageIcon(imagedata);
        java.awt.Image img = imageIcon.getImage();
        this.dImage.setIcon(imageIcon);
        this.dImage.setText(null);
        }
        }

    }
    catch(Exception ex){
    }

I am not getting any error but the image is not getting displayed. I have enclosed the jLable in Desktop pane