Java Programming

I am having trouble figuring out how I can get the disks to be drawn in the window based on the number in the comboBox.

This is the code I have so far. There are a few variable that have yet to be used and I may not need them at all.

package project4;

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

public class Hanoi extends JFrame {

    private static final int WINDOW_WIDTH = 600;
    private static final int WINDOW_HEIGHT = 400;
    private ControlPanel controlPanel;
    private Container container;
    private JPanel gamePanel;
    private AnimationPanel animation = new AnimationPanel();

    public static void pauseBoard() {
        try {
            Thread.sleep(20);
        }//end try 
        catch (Exception e) {
            System.out.println(e);
            e.printStackTrace();
        }//end catch
    }//end pauseBoard
    public Hanoi() {
        super("Hanoi");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(WINDOW_WIDTH, WINDOW_HEIGHT);

        gamePanel = new JPanel();


        controlPanel = new ControlPanel();
        gamePanel.setBackground(Color.BLUE);
        setLayout(new BorderLayout());
        add(gamePanel);
        add(controlPanel, BorderLayout.SOUTH);
        center(this);

        setVisible(true);

        while (true) {
            pauseBoard();
            repaint();
        }
    }//end Hanoi
    public void paint(Graphics g) {
        g.setColor(Color.RED);
        g.fillRect(75, 310, 100, 20);
        g.fillRect(113, 110, 20, 200);

        g.fillRect(250, 310, 100, 20);
        g.fillRect(290, 110, 20, 200);

        g.fillRect(435, 310, 100, 20);
        g.fillRect(475, 110, 20, 200);
    }//end paint
    public static void center(JFrame frame) {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Point center = ge.getCenterPoint();

        int w = frame.getWidth();
        int h = frame.getHeight();

        int x = center.x - w / 2, y = center.y - h / 2;
        frame.setBounds(x, y, w, h);
        frame.validate();
    }//end center
    public static void main(String[] args) {
        Hanoi h = new Hanoi();
    }//end main
}

package project4;

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

public class ControlPanel extends JPanel {

    public JButton solve;
    public JButton restart;
    public JComboBox diskNumber;
    public JPanel container1;

    public ControlPanel() {
        solve = new JButton("Solve");
        solve.addActionListener(new solveListener());
        restart = new JButton("Restart");
        restart.addActionListener(new restartListener());
        String[] numbers = {"3", "4", "5", "6", "7", "8", "9", "10"};
        diskNumber = new JComboBox(numbers);
        diskNumber.addActionListener(new diskListener());
        add(solve);
        add(restart);
        add(diskNumber);
        setVisible(true);
    }//end ControlPanel
    public void paintComponent(Graphics g) {
        g.setColor(Color.BLACK);
        g.fillRect(0, 0, this.getWidth(), this.getHeight());
    }//end paintComponent
    private class solveListener implements ActionListener {

        public void actionPerformed(ActionEvent e) {
        }//end actionPerformed
    }//end solveListener
    private class restartListener implements ActionListener {

        public void actionPerformed(ActionEvent e) {
        }//end actionPerformed
    }//end restartListener
    private class diskListener implements ActionListener {

        public void actionPerformed(ActionEvent e) {

        }//emd actionPerformed
    }//end discListener
}//end class ControlPanel

I've also got this animation class but now that I look at it I'm not even sure I need it. This is where I had planned on trying to draw the disks and I had been trying to get the pillars drawn in here as well but it didn't seem to want to cooperate.

package project4;

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

public class AnimationPanel extends JPanel {

    public AnimationPanel() {
    }//end AnimationPanel
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(Color.RED);
        g.fillRect(300, 100, 20, 20);
    }//end paintComponent
}//end class AnimationPanel\