Moire Pattern Java Program

**strong text**What you are seeing in the screenshot are two sets of concentric circles. The centers of the circles are 100 pixels apart. The circles have a width of 5, and the diameter of a circle is 20 pixels larger than its next smallest one. Diameters range from 20 to 480 pixels.

Hint: You can change the width of the 'pen' used for drawing to 5 pixels with the line g2.setStroke(new BasicStroke(5)).

Hint: A circle is just an oval whose width and height are the same.

Make the program from this older code:

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Flower extends JPanel {

  public void paintComponent(Graphics g){
    final int centerX = 300; 
    final int centerY = 300;
    final int ovalWidth = 100; 
    Graphics2D g2 = (Graphics2D) g;




    g2.setColor(Color.black);
    g2.fillOval(centerX, centerY - ovalWidth / 2, 300, ovalWidth); 

    g2.rotate(Math.toRadians(15),centerX,centerY);

    g2.fillOval(centerX, centerY - ovalWidth / 2, 300, ovalWidth);
    g2.rotate(Math.toRadians(15),centerX,centerY);

    g2.fillOval(centerX, centerY - ovalWidth / 2, 300, ovalWidth);
    g2.rotate(Math.toRadians(15),centerX,centerY);

 }

  public static void main(String[] args) {
    JFrame frame = new JFrame("Window"); //frame is the window
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Flower panel = new Flower(); //panel is the graphics area where we can draw

    frame.add(panel); //put the panel inside the window
    frame.setSize(640,640); //set the window size to 640x640 pixels
    frame.setVisible(true); 
 }
}


![alt text][1]