Hi everybody,
i'm new to Java 2D and I have a Problem drawing a geometric primitive
on a JPanel.
I used getGraphics() to get the Graphics-Object of my JPanel, casted
it to Graphics2D, then drew a line on it und used myJPanel.repaint()
to update the JPanel.

But somehow I can't see the line I'v drawn and i can't figure it out
why .

the following is my code (without import statements):
......................................................................................................
public class NewJFrame extends JFrame {

   private JPanel pane = null;

   /** Creates new instance */
   public NewJFrame() {
       initComponents();

       // draw a line on JPanel
       Graphics2D canvas = (Graphics2D)pane.getGraphics();
       canvas.setPaint(Color.BLUE);
       canvas.draw(new Line2D.Float(1,1,111,111));
       pane.repaint();
   }

   private void initComponents() {
       Dimension min = new Dimension(300,300);
       setMinimumSize(min);

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
       pane = new JPanel();
       setContentPane(pane);
       pane.setBackground(new Color(255, 204, 255));
       pane.setForeground(new Color(51, 51, 255));
       pack();
   }

   public static void main(String args[]) {
       java.awt.EventQueue.invokeLater(new Runnable() {
           public void run() {
               new NewJFrame().setVisible(true);
           }
       });
   }
}
......................................................................................................

Any help would be greatly appreicated, because I am deeply confused
and frustrated.