Writing Classes - Java Software Solutions: Foundations of Program Design - page 184

LISTING 4.6
//********************************************************************
// SmilingFacePanel.java Author: Lewis/Loftus
//
// Demonstrates the use of a separate panel class.
//********************************************************************
import javax.swing.JPanel;
import java.awt.*;
public class SmilingFacePanel extends JPanel
{
private final int BASEX = 120, BASEY = 60; // base point for head
//-----------------------------------------------------------------
// Constructor: Sets up the main characteristics of this panel.
//-----------------------------------------------------------------
public SmilingFacePanel ()
{
setBackground (Color.blue);
setPreferredSize ( new Dimension(320, 200));
setFont (new Font("Arial", Font.BOLD, 16));
}
//-----------------------------------------------------------------
// Draws a face.
//-----------------------------------------------------------------
public void paintComponent (Graphics page)
{
super .paintComponent (page);
page.setColor (Color.yellow);
page.fillOval (BASEX, BASEY, 80, 80); // head
page.fillOval (BASEX-5, BASEY+20, 90, 40); // ears
page.setColor (Color.black);
page.drawOval (BASEX+20, BASEY+30, 15, 7); // eyes
page.drawOval (BASEX+45, BASEY+30, 15, 7);
page.fillOval (BASEX+25, BASEY+31, 5, 5); // pupils
page.fillOval (BASEX+50, BASEY+31, 5, 5);
page.drawArc (BASEX+20, BASEY+25, 15, 7, 0, 180); // eyebrows
page.drawArc (BASEX+45, BASEY+25, 15, 7, 0, 180);