Paint component inside another component

Question

I have a task to display the drawn "eyes" using the menu buttons to change their colors and background color. Then revive them. But currently I'm stuck in painting, in my JFrame, I created a JPanel containing panels with painted eyes and buttons. The buttons are displayed correctly, but my canvas is not shown. I tried changing the paint to paintComponent, setting the contentPane differently, but nothing works anyway.

import java.awt.*;
import javax.swing.*;

public class Main extends JFrame {

    public static void main(String[] args) {
        final JFrame frame = new JFrame("Eyes");
        frame.setPreferredSize(new Dimension(600, 450));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel players = new JPanel(new GridLayout(1, 3));
                players.add(new JButton("Eyes color"));
                players.add(new JButton("Eye pupil"));
                players.add(new JButton("Background color"));

        JPanel eyes = new JPanel();
        Eyes e = new Eyes();
        eyes.add(e);
        eyes.setPreferredSize(new Dimension(600, 400));

        JPanel content = new JPanel();
        content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
        frame.setContentPane(content);
        content.add(players);
        content.add(eyes);

//        frame.getContentPane().add(content);
        frame.pack();
    frame.setVisible(true);

    }
}

class Eyes extends JPanel {

    public Eyes(){     
    }

    public void paint(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
        BasicStroke bs = new BasicStroke(3.0f);
        g2d.setBackground(Color.green);
        g2d.setStroke(bs);
        g2d.setColor(Color.yellow);
        g2d.fillOval(50, 150, 200, 200);
        g2d.fillOval( 350, 150, 200, 200);
        g2d.setColor(Color.BLACK);
        g2d.drawOval(49, 149, 201, 201);
        g2d.drawOval(349, 149, 201, 201);
        g2d.fillOval(125, 225, 50, 50);
        g2d.fillOval(425, 225, 50, 50);
    }
}

This is what I should get: alt text http://img175.imageshack.us/img175/6420/eyes1.jpg This is what I have: alt text http://img132.imageshack.us/img132/827 /eyes2i.jpg

JFrame, , , . setBackgroundColor ?

Answer 1

Eyes . : JPanel eyes = new JPanel();

:

Eyes eyes = new Eyes();
eyes.setPreferredSize(new Dimension(600, 400));

JPanel content = new JPanel();
content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
frame.setContentPane(content);
content.add(players);
content.add(eyes);

. e.

JPanel eyes = new JPanel();
Eyes e = new Eyes();
eyes.add(e);
e.setPreferredSize(new Dimension(600, 400));
eyes.setPreferredSize(new Dimension(600, 400));

Answer 2

"" :

 public void paint(Graphics g) { 
        super.paintComponent(g); 

:

 public void paintComponent(Graphics g) { 
        super.paintComponent(g);