Can't show J components on JPanel

Question

Because I'm a begineer, I'm not sure I can explain my problem correctly.
The problem is quite simple.
I'd like to show some J components on JPanel but I can't.
I made a JFrame which has 5 JPanels.
Each JPanel has some components and calls paint method to draw some lines.
public void paint(Graphics g){
     g.setColor(Color.black );
     drawDisplay(g);
When I put AWT componts such as Label, Button etc, there's no problem.
But when I put J components like JLabel, JButton,
I cannot see the components. Sometimes I can click JCombo box....
Interestingly, when I remove the paint method, J components show up on interface.
Anybody understand this situation?
Do I have to know something for this?
Thank-you.

Answer 1

I second camickr's recommendation for you to study the tutorials. A few specifics:
public void paint(Graphics g){
   g.setColor(Color.black );
   drawDisplay(g);
}* Don't override the paint method of a JPanel, override the paintComponent method.
* You will need to call super.paintComponent(g) within your paintComponent override. This may need to be the first line in fact.
* As noted by camickr, do not place AWT components on a Swing component (JPanel).