How to make the swing drawings to appear in a specific jPanel?

Question

hi,
I have a frame which I divided in two panels - one for the jComboBoxes/buttons and the other one for showing graphics. but the paint(Graphics g) overpaints it all =(
how should my code look like if I want some rectangles (depending on the combo choices and on button click which means update) to appear in the second panel?
the code's structure is like :
import *;
public class NewJFrame extends javax.swing.JFrame {
     private JPanel jPanel1;
public static void main(String[] args) {
          NewJFrame inst = new NewJFrame();
          inst.setVisible(true);
     public NewJFrame() {
          super();
          initGUI();          
     public void paint(Graphics g) {
          g.fillRect (x, y, w, z)
     private void initGUI() {
          jPanel1 = new JPanel();
               // combo boxes and buttons
               // action listeners for them
          jPanel2 = new JPanel();
               // the place where the rectangles should be shown
               // and updated if combos are changed and button clicked
}now, I wonder if anyone could possibly give me a hint how to make it correctly, because I'm really a total newb in Java and I can't find any good examples from www which I've search through for the solution.
P.S. is there a plug-in for eclipse for visual programming of the graphics? =)
thank You for the kindest help!
J.M.

Answer 1

You should not be mixing AWT and Swing component in
a Swing application, so don't use a Canvas.
If you need some custom painting then you should
override the paintComponent() method of JComponent or
JPanel and then add this component to the GUIwhat does mean the override the paintComponent() method of JComponent or JPanel?
how can I add that component to the GUI?
=)
can you give a short code example, please! the code structure would be more than enough.
J.