Scrollpane question

I'm trying the example in Sun online tutorial about scrollpane (http://java.sun.com/developer/onlineTraining/awt/contents.html#AWTScrollPane), but i get the image canvas draw inside the scrollpane with the scrollbars, but the scrollbars does not works, as if the image in the panel were of lower size, but it's bigger.
The code is:
inside applet init()
setLayout(new BorderLayout());
ScrollPane sp=new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
. Image im=...loads an image...
sp.add(new ImageCanvas(im));
add(sp, BorderLayout.CENTER);
And image canvas is:
class ImageCanvas extends Component {
private Image image;
public ImageCanvas(Image i) {
image = i;
public void paint(Graphics g) {
if (image != null)
g.drawImage(image, 0, 0, this);
As I said, there are scrollbars but they have no bar to move and scroll throgh the picture. I've tried to setSize of scrollPane and/or imagecanvas to a big size but this doesn't change anything.
Were am I wrong?
Thanks in advance.

Solved, with code from another old tutorial from Sun, different from this one, that seems that does not work correctly.

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     * Returns whether or not the border is opaque. If the border
     * is opaque, it is responsible for filling in it's own
     * background when painting.
     public boolean isBorderOpaque(){
          return false;
     public static void main(String args[]){
          JFrame jf = new JFrame();
          Container cp = jf.getContentPane();
          cp.setLayout(new BorderLayout());
          SyntaxedEditor ta = new SyntaxedEditor();
          //all we need to do is this...
          ta.setBorder( new LineNumberBorder(Color.red) );
          //ta.setLineWrap(true);
          cp.add(new JScrollPane(ta), BorderLayout.CENTER);
          jf.setSize(300, 400);
          jf.setVisible(true);
          jf.addWindowListener(new WindowAdapter() {
          public void windowActivated(WindowEvent e) {}
          public void windowClosed(WindowEvent e) {}
          public void windowClosing(WindowEvent e) {System.exit(0);}
          public void windowDeactivated(WindowEvent e) {}
          public void windowDeiconified(WindowEvent e) {}
          public void windowIconified(WindowEvent e) {}
          public void windowOpened(WindowEvent e) {}});
} // LineNumberBorder

The LineNumberBorder just extends AbstractBorder which extends Object, so there can't be any issues about mixing heavy weight and light weight components... can there?
I'm stumped. The border is painting all the line numbers, as I would expect from the code, but the Scrollpane isn't hiding them. The numbers paint right on top of surrounding components until some action on my part causes those comps to explicitly repaint themselves.
Any ideas? Anyone?

ScrollPane component smooth scrolling

Hello. I just started working with AS 3.0 and I'm yet
learning basics. I searched google and couldnt find the answer to
my question; How to make scrolling on ScrollPane component smooth
with AS 3.0? Please help.

Hello. I just started working with AS 3.0 and I'm yet
learning basics. I searched google and couldnt find the answer to
my question; How to make scrolling on ScrollPane component smooth
with AS 3.0? Please help.

Scrollpane question

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