Applet: Panel beim Start nicht sichtbar - warum????

Ich habe ein Applet, in dem ich in der oberen Hälfte ein Panel mit 2

Label und 2 JComboBox anlege. In der unteren Hälfte habe ich eine

anderes Panel, in dem gezeichnet werden soll. Wenn ich jedoch die

paint-Methode implementiere, wird nur gezeichnet, aber die anderen

Komponenten sind verschwunden. Hier mal der Code meines Applets:

package fractalApplet;


import java.awt.*;

import java.awt.event.*;

//import java.applet.*;

import javax.swing.*;


public class LindenmayerApplet extends JApplet {

  private boolean isStandalone = false;

  JPanel jPanel1 = new JPanel();

  JPanel jPanel2 = new JPanel();

  String [] kurven = {"Kochkurve", "Hilbertkurve",

"Kochschneeflocke"};

  JComboBox jComboBox1 = new JComboBox(kurven);

  String [] rekursion = {"0. Ordnung  ", "1. Ordnung  ", "2. Ordnung 

", "3. Ordnung  ", "4. Ordnung  "};

  JComboBox jComboBox2 = new JComboBox(rekursion);

  JLabel jLabel1 = new JLabel();

  JLabel jLabel2 = new JLabel();

  Lindenmayer lSys = new Lindenmayer();

  //Parameterwert holen

  public String getParameter(String key, String def) {

 return isStandalone ? System.getProperty(key, def) :

   (getParameter(key) != null ? getParameter(key) : def);

  }


  //Das Applet konstruieren


  //Das Applet initialisieren

  public void init() {

 try {

   jbInit();

 }

 catch(Exception e) {

   e.printStackTrace();

 }

  }

  //Initialisierung der Komponenten

  private void jbInit() throws Exception {

 this.getContentPane().setBackground(SystemColor.control);

 this.setSize(new Dimension(600,500));

 jPanel1.setBackground(Color.white);

 jLabel1.setText("Kurve");

 jLabel2.setText("Rekursionstiefe");

 jComboBox1.addActionListener(new

LindenmayerApplet_jComboBox1_actionAdapter(this));

 jComboBox2.addActionListener(new

LindenmayerApplet_jComboBox2_actionAdapter(this));

 this.getContentPane().add(jPanel1, BorderLayout.NORTH);

 jPanel1.add(jLabel1, null);

 jPanel1.add(jComboBox1, null);

 jPanel1.add(jLabel2, null);

 jPanel1.add(jComboBox2, null);

 jPanel2.setBackground(Color.white);

 this.getContentPane().add(jPanel2, BorderLayout.CENTER);


  }

  //Applet-Information holen

  public String getAppletInfo() {

 return "Applet-Information";

  }

  //Parameter-Infos holen

  public String[][] getParameterInfo() {

 return null;

  }


  //Statische Initialisierung des Look & Feel

  static {

 try {

   //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

   //UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());

 } catch(Exception e) {

 }

  }


  void jComboBox1_actionPerformed(ActionEvent e) {

 setAxiom();

 setRule();

  }


  void jComboBox2_actionPerformed(ActionEvent e) {

   setRekursion(); 

  }


  public String setAxiom() {

   String axiom = "F";

 switch(jComboBox1.getSelectedIndex()) {

   case '0': axiom = "F";

    break;

   case '1': axiom = "F - F - F - F - F - F";

      break;

   case '2': axiom = "F";

      break;

 } return axiom;

  } 


  public String setRule() {

   Graphics g = this.getGraphics();

   g.setColor(Color.black);

   String rule = "";

 switch(jComboBox1.getSelectedIndex()) {

   case '0': rule = "F-F++F-F";

    break;

   case '1': rule = "F-F++F-F";

    break;

   case '2': rule = "F-F++F-F";

    break;

 } return rule;

  }


  public int setRekursion() {

   int ordnung = 0;

   switch(jComboBox2.getSelectedIndex()) {

    case '0': ordnung = 0;

       break;

  case '1': ordnung = 1;

     break;

  case '2': ordnung = 2;

     break;

  case '3': ordnung = 3;

     break;

  case '4': ordnung = 4;

     break;                      

   } return ordnung;

  }



  public void paint(Graphics g) {

   g = jPanel2.getGraphics();

   Turtle myTurtle = new Turtle(this, g);

   g.setColor(Color.blue);

   //lSys.drawLindenmayer(myTurtle, setAxiom(), setRule(), 60.0, 400,

setRekursion());

 lSys.drawLindenmayer(myTurtle, "F", "F-F++F-F", 60.0, 400, 0);

  } 

}


class LindenmayerApplet_jComboBox1_actionAdapter implements

java.awt.event.ActionListener {

 LindenmayerApplet adaptee;


 LindenmayerApplet_jComboBox1_actionAdapter(LindenmayerApplet adaptee)

{

 this.adaptee = adaptee;

  }

  public void actionPerformed(ActionEvent e) {

 adaptee.jComboBox1_actionPerformed(e);

  }

}


class LindenmayerApplet_jComboBox2_actionAdapter implements

java.awt.event.ActionListener {

 LindenmayerApplet adaptee;


 LindenmayerApplet_jComboBox2_actionAdapter(LindenmayerApplet adaptee)

{

 this.adaptee = adaptee;

  }

  public void actionPerformed(ActionEvent e) {

 adaptee.jComboBox1_actionPerformed(e);

  }

}

Hat irgend jemand ne Ahnung, warum nicht Komponenten und Zeichnung

dargestellt werden. Was mache ich denn falsch???

mfg Sandro