memasukkan image pada panel

public class ImagePanel extends JPanel {

    private BufferedImage logo;

    /** Creates a new instance of ImagePanel */
    public ImagePanel() {
        try {
            // buka file
            File img = new File("gambar/Winter.jpg");
            // baca image
            logo = ImageIO.read(img);
            //img.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    @Override
    public void paintComponent(Graphics g) {
        g.drawImage(logo,0, 0, 400, 300,
                0, 0, logo.getWidth(null), logo.getHeight(null),
                null);
    }

    public static void main(String args[]) {
        JFrame frame = new JFrame("Using Java2D");
        frame.setLayout(new BorderLayout());
        ImagePanel gc = new ImagePanel();
        frame.add(gc, BorderLayout.CENTER);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(600, 250);
        frame.setVisible(true);
    }
}