Java: Example - Drawing a Face v2

/** Face.java - Example app with graphics component.
  @author Fred Swartz 
  @version 1996 ... 2002-10-24
*/

import javax.swing.*;

////////////////////////////////////////////////////////////////// Face
public class Face {
    // =========================================================== main
    public static void main(String[] args) {
        JFrame window = new FaceWindow();
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
    }//end main
}//end class Face

/** FaceWindow.java - Window (JFrame) containing only one component.
  @author Fred Swartz 
  @version 1996 ... 2002-10-24
*/

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

//////////////////////////////////////////////////////////// FaceWindow
class FaceWindow extends JFrame {
    // ==================================================== constructor
    FaceWindow() {
        Container content = this.getContentPane();  // get content pane
        content.setLayout(new BorderLayout());      // set its layout
        PacLady drawing = new PacLady();            // Create a PacLady
        content.add(drawing, BorderLayout.CENTER);  // center expands
        
        this.setTitle("Ms Paclady");
        this.pack();             // finalize window layout
    }//end constructor
}//endclass FaceWindow 

/** PacLady.java - Graphical component extending JPanel.
  @author Fred Swartz 
  @version 1996 ... 2002-10-24
*/

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

///////////////////////////////////////////////////////// class PacLady
    // This class extends JPanel and overrides paintComponent to
    // create a component for drawing - in this case a face.
public class PacLady extends JPanel {
    // =================================================== constructor
    PacLady() {
        this.setBackground(Color.lightGray);
        this.setPreferredSize(new Dimension(400, 400));  // size
    }//end constructor
    
    //===========================================//===== paintComponent
    public void paintComponent(Graphics g) {
        // This method is called to redraw window
        super.paintComponent(g);  // MUST be first line      
        //--- Draw the head with open mouth and 8 pixel border
        g.setColor(Color.pink);
        g.fillArc(8, 8, 384, 384, 30, 300);       
        //--- Draw the eye
        g.setColor(Color.magenta);
        g.fillOval(230, 72, 60, 60);
    }//end paintComponent
}//endclass PacLady