Graphical User Interfaces - Java Concepts - page 1093

The following program builds up a small but typical menu and traps the action events
from the menu items. To keep the program readable, it is a good idea to use a separate
method for each menu or set of related menus. Have a look at the
createFaceItem method, which creates a menu item to change the font face. The
same listener class takes care of three cases, with the name parameters varying for
each menu item. The same strategy is used for the createSizeItem and
createStyleItem methods.

ch18/menu/FontViewer2.java

1 import javax.swing.JFrame;
2 3 /**
4 This program uses a menu to display font
effects.
5 */
6 public class FontViewer2
7 {
8 public static void main(String[] args)
9 {
10 JFrame frame = new FontViewer2Frame();
11 frame.setDefaultCloseOperation(JFrame.EXIT_ON_
12 frame.setVisible( true );
13 }
14 }

803
804

ch18/menu/FontViewer2Frame.java

1 import java.awt.BorderLayout;
2 import java.awt.Font;
3 import java.awt.GridLayout;
4 import java.awt.event.ActionEvent;
5 import java.awt.event.ActionListener;
6 import javax.swing.ButtonGroup;
7 import javax.swing.JButton;
8 import javax.swing.JCheckBox;
9 import javax.swing.JComboBox;
10 import javax.swing.JFrame;
11 import javax.swing.JLabel;
12 import javax.swing.JMenu;