painting nested JComponents

Goal: create a threaded "WaitIndicator" JComponent that itself consists of 12 "LightSegment" JComponents arranged in a circle like on the face of a clock. When triggered, WaitIndicator should sequentially paint a LightSegment its base color and the previous LightSegment set to grey.

This code does not yet try the threading or triggering or sequencing, just initializes an instance of WaitIndicator. For the moment I've hardcoded the initial colors of the 12 LightSegments to make debugging easier.

Problem: I'm not seeing the 12 LightSegments initialized to their correct colors - all appear black. So I'm obviously doing something wrong.

import java.util.*;
import java.lang.reflect.*;

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

import javax.swing.*;
import javax.swing.event.*;

public class WaitIndicatorTest extends JFrame
{
    class LightSegment extends JComponent
    {
        Ellipse2D circle = new Ellipse2D.Double();

Point2D position;
        Color color;
        int dia;
        int border;
        boolean active;

//constructors
        public LightSegment(double coord_x, double coord_y, Color color, int radius) {
            this.circle.setFrame( new Point2D.Double(coord_x, coord_y), new Dimension(12, 12));
            this.setPreferredSize( new Dimension( 12, 12));
            this.color = color;
            this.dia = radius;
            this.border = 1;
            this.active = true;
        }

//methods
        public void turnOn(Color color) {
            this.color = color;
            this.active = true;
            repaint();
        }

public void turnOff() {
            this.color = Color.GRAY;
            this.active = false;
            repaint();
        }

public void paint(Graphics g) {
            Graphics2D g2 = (Graphics2D) g;
            g2.setColor(this.color);
            g2.draw(circle);
            g2.fill(circle);
        }
    }

public class WaitIndicator  extends JComponent
    {
        ArrayList<LightSegment> segArray = new ArrayList<LightSegment>();

int height = 100;
        int width  = 100;
        Point2D position;
        Color color;
        boolean active;

//constructors
        WaitIndicator() {
            double center_x =  50.0;
            double center_y =  50.0;

this.segArray.add(new LightSegment( center_x+0 , center_y+50, Color.magenta, 10));
            this.segArray.add(new LightSegment( center_x+25.0, center_y+43.3, Color.black, 10));
            this.segArray.add(new LightSegment( center_x+43.3, center_y+25.0, Color.orange, 10));
            this.segArray.add(new LightSegment( center_x+50, center_y+0,  Color.red, 10));
            this.segArray.add(new LightSegment( center_x+43.3, center_y-25.0, Color.green, 10));
            this.segArray.add(new LightSegment( center_x+25.0, center_y-43.3, Color.blue, 10));
            this.segArray.add(new LightSegment( center_x+0 , center_y-50, Color.yellow, 10));
            this.segArray.add(new LightSegment( center_x-25.0, center_y-43.3, Color.pink, 10));
            this.segArray.add(new LightSegment( center_x-43.3, center_y-25.0, Color.white, 10));
            this.segArray.add(new LightSegment( center_x-50, center_y+0,  Color.cyan, 10));
            this.segArray.add(new LightSegment( center_x-43.3, center_y+25.0, Color.gray, 10));
            this.segArray.add(new LightSegment( center_x-25.0, center_y+43.3, Color.blue, 10));
            this.active = false;
        }

//methods
        public void turnOn(Color color) {
            this.color = color;
            this.active = true;
            repaint();
        }

public void turnOff() {
            this.color = Color.GRAY;
            this.active = false;
            repaint();
        }

public void paint(Graphics g) {
            Graphics2D g2 = (Graphics2D) g;
            for( int ii = 0 ; ii < 12 ; ii++ ) g2.draw( this.segArray.get(ii).circle);
            for( int ii = 0 ; ii < 12 ; ii++ ) g2.fill( this.segArray.get(ii).circle);
        }

public void runIt() {
            for( int ii = 0 ; ii < 120 ; ii++ ) {
                int jj = ii % 12;
                this.segArray.get(jj+0).turnOn(Color.blue);
                this.segArray.get(jj+11).turnOff();
                repaint();
            }
        }
    }

private void createAndShowGUI()
    {
        JFrame frame1;
        Container pane1;

JPanel panelTGC;
        final JButton buttonTGCtrigger;
        final WaitIndicator waitIndicatorTGCtrigger;
        final JButton buttonCancel;

buttonTGCtrigger        = new JButton("click me");
        waitIndicatorTGCtrigger = new WaitIndicator();
        waitIndicatorTGCtrigger.setPreferredSize( new Dimension(200,200));
        waitIndicatorTGCtrigger.setBackground(Color.GREEN);
        buttonCancel            = new JButton("Cancel");

buttonTGCtrigger.addActionListener( new ActionListener() {
            public void actionPerformed( ActionEvent e) {
                waitIndicatorTGCtrigger.runIt();
              }
        });

buttonCancel.addActionListener( new ActionListener() {
            public void actionPerformed( ActionEvent e) {
                System.exit(0);
              }
        });

//Create and set up the window.
        frame1 = new JFrame( "TinyTest");
        frame1.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);  // Exit when the window is closed.
        frame1.setBounds(200,200,900,500);   // in pixels

pane1 = frame1.getContentPane();
        pane1.setLayout( new BoxLayout(pane1, BoxLayout.Y_AXIS));

panelTGC = new JPanel();
        panelTGC.setLayout( new FlowLayout());

panelTGC.add( buttonTGCtrigger);
        panelTGC.add( waitIndicatorTGCtrigger);
        panelTGC.add( buttonCancel);

//now add panels to the pane

pane1.add( panelTGC);

//Display the window.
//      frame1.pack();
        frame1.setVisible(true);
    }

public static void main(String[] args)
    {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater( new Runnable() {
            public void run() {

WaitIndicatorTest theApp;

theApp = new WaitIndicatorTest();

theApp.createAndShowGUI();
            }
        });

}
}

As always, all hints, suggestions, comments, constructive critisms and especially examples are all welcome.

TIA,

Still-learning Steve

Where are you painting the elements in segArray?
You appear to be painting the circle 12 times.
There are all sorts of style and design issues, too.

I shall move this discussion to our GUIs forum.