// Method to build the dialog box for help.
private void buildDialogBox() {
// Set the JDialog window properties.
setTitle("Learning about Java");
setResizable(false);
setSize(dialogWidth, dialogHeight);
// Define behaviors of container.
c.setLayout(null);
c.setBackground(Color.cyan);
c.add(image);
c.add(okButton);
// Set the bounds for the image.
image.setBounds(
(dialogWidth / 2) - (imageWidth / 2),
(top + (offsetMargin / 2)),
imageWidth,
imageHeight);
// Set the behaviors, bounds and action listener for the button.
okButton.setBounds(
(dialogWidth / 2) - (buttonWidth / 2),
(imageHeight + (int) 1.5 * offsetMargin),
buttonWidth,
buttonHeight);
// Set the font to the platform default Font for the object with the
// properties of bold and font size of 11.
okButton.setFont(new Font(okButton.getFont().getName(), Font.BOLD, 11));
// Set foreground and background of JButton(s).
okButton.setForeground(Color.white);
okButton.setBackground(Color.blue);
// The class implements the ActionListener interface and therefore
// provides an implementation of the actionPerformed() method. When a
// class implements ActionListener, the instance handler returns an
// ActionListener. The ActionListener then performs actionPerformed()
// method on an ActionEvent.
okButton.addActionListener(this);
// Set the screen and display dialog window in relation to screen size.
dim = tk.getScreenSize();
setLocation((dim.width / 2) - (dialogWidth / 2), (dim.height / 2) - (dialogHeight / 2));
// Display the dialog.
show();
} // End of buildDialogBox method.
