applet with NetBeans

[Ib Tlb]

package newPak;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JPanel;
public class NewJApplet extends javax.swing.JApplet {
    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    initComponents();
                }
            });
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
    /** This method is called from within the init() method to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // generated code then 

    private void jInternalFrame1MouseMoved(java.awt.event.MouseEvent evt) {                                           
        this.statusBar.setText(String.format("mouse X:%d Y:%d",evt.getX(),evt.getY()));
    }                                          

    private void jInternalFrame1MouseClicked(java.awt.event.MouseEvent evt) {                                             
        Draw d = new Draw(evt.getX(),evt.getY());
        this.jInternalFrame1.add(d);
        this.jInternalFrame1.validate();
    }                                            

private java.awt.Graphics g;
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JInternalFrame jInternalFrame1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JLabel statusBar;
    // End of variables declaration

}

class Draw extends JPanel {
    private int x;
    private int y;
    public Draw(int i,int j){
        x=i;
        y=j;
    }
    @Override
    public void paintComponent(Graphics g) {
        System.out.println((String.format("mouse clicked at  X:%d Y:%d",x,y)));
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.drawOval(100, 100, 10, 10);
        System.out.println((String.format("mouse clicked at  X:%d Y:%d",x,y)));
    }
}

my problem is here

private void jInternalFrame1MouseClicked(java.awt.event.MouseEvent evt) {                                             
        Draw d = new Draw(evt.getX(),evt.getY());
        this.jInternalFrame1.add(d);
        this.jInternalFrame1.validate();
    }      

I want to draw the oval here but nothing is displayed not event the println in the terminal ?