how to save a image recieved through network in java

image is successfully recieved at the server side and i can display it on label but my Problem is how to save that image i used

JFileChooser.showSaveDialog()

i tried printstream i can save the file but whenever i opened the file in image viewer it is showing as this type of file is cant be opened

Plz help me with this guys

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BufferedImage img=ImageIO.read(ImageIO.createImageInputStream(sock.getInputStream()));

           System.out.println("Image received!!!!"); 

           JFileChooser fc = new JFileChooser();
        int i=fc.showSaveDialog(null);
        if( i == JFileChooser.APPROVE_OPTION ) {                

                PrintStream ps = new PrintStream(fc.getSelectedFile());

        //  ImageIO.write(bimg,"JPG",fc.getInputStream());
                ps.print( img);
                ps.close();
           lblNewLabel.setIcon(new ImageIcon(img)); //image is successfully displaying on the label
        }