《Java2图形设计卷II：Swing》配套光盘源码

				import java.awt.*;
				import java.awt.event.*;
				import javax.swing.*;
				
				public class Test extends JApplet {
					private JCheckBox checkBox = new JCheckBox("Editable");
					private JComboBox comboBox = new JComboBox();
				
					public void init() {
						Container contentPane = getContentPane();
				
						comboBox.addItem("Top");
						comboBox.addItem("Center");
						comboBox.addItem("Bottom");
				
						checkBox.setSelected(comboBox.isEditable());
				
						contentPane.setLayout(new FlowLayout());
						contentPane.add(checkBox);
						contentPane.add(comboBox);
				
						checkBox.addActionListener(new ActionListener() {
							public void actionPerformed(ActionEvent e) {
								comboBox.setEditable(checkBox.isSelected());
							}
						});
						comboBox.getEditor().addActionListener(
															new ActionListener() {
							public void actionPerformed(ActionEvent e) {
							System.out.println("here" + 
												comboBox.getSelectedItem());
							}
						});
					}
					public static void main(String args[]) {
						final JFrame f = new JFrame();
						JApplet applet = new Test();
				
						applet.init();
				
						f.setContentPane(applet.getContentPane());
						f.setBounds(100,100,308,199);
						f.setTitle("An Application");
						f.setVisible(true);
				
						f.setDefaultCloseOperation(
							WindowConstants.DISPOSE_ON_CLOSE);
				
						f.addWindowListener(new WindowAdapter() {
							public void windowClosed(WindowEvent e) {
								System.exit(0);
							}
						});
					}
				}