《Java2图形设计卷II：Swing》配套光盘源码

				import java.awt.*;
				import java.awt.event.*;
				import javax.swing.*;
				import javax.swing.event.*;
				import javax.swing.table.*;
				import java.util.*;
				
				public class Test extends JFrame {
					JTable table = new JTable(new Object[][] {
								{"apple", "$.39"}, 		{"mango", "$.49"},
								{"papaya", "$1.19"}, 	{"lemon", "$.19"},
								{"orange", "$.59"}, 	{"watermelon", "$.39"},
								{"tangerine", "$1.09"}, {"cherry", "$.79"},
								{"banana", "$.29"}, 	{"lime", "$.33"},
								{"grapefruit", "$.69"}, {"grapes", "$.49"},
							},
							new Object[] { "Item", "Price/Lb." });	
						
					public Test() {
						TableColumn column = table.getColumn("Price/Lb.");
						TableCellRenderer renderer = column.getHeaderRenderer();
				
						column.setHeaderRenderer(new RendererDecorator(renderer));
				
						getContentPane().add(new JScrollPane(table),
											 				BorderLayout.CENTER);
					}
					public static void main(String args[]) {
						GJApp.launch(
							new Test(), "A Renderer Decorator", 300,300,450,182);
					}
				}
				class RendererDecorator implements TableCellRenderer {
					TableCellRenderer realRenderer;	
					JPanel panel;
					JLabel iconLabel = new JLabel(new ImageIcon("money.gif"));
				
					public RendererDecorator(TableCellRenderer r) {
						realRenderer = r;
						iconLabel.setBorder(BorderFactory.createEtchedBorder());
					}
					public Component getTableCellRendererComponent(
											JTable table, Object value,
											boolean isSelected, boolean hasFocus,
											int row, int col) {
						Component c = realRenderer.getTableCellRendererComponent(
												table, value, isSelected, 
												hasFocus, row, col);
						embellishComponent(c);
						return panel;
					}
					private void embellishComponent(Component c) {
						if(panel == null) {
							panel = new JPanel();
				
							panel.setLayout(new BorderLayout());
							panel.add(c, BorderLayout.CENTER);
							panel.add(iconLabel, BorderLayout.WEST);
						}
					}
				}
				class GJApp extends WindowAdapter {
					static private JPanel statusArea = new JPanel();
					static private JLabel status = new JLabel(" ");
					static private ResourceBundle resources;
				
					public static void launch(final JFrame f, String title,
											  final int x, final int y, 
											  final int w, int h) {
						launch(f,title,x,y,w,h,null);	
					}
					public static void launch(final JFrame f, String title,
											  final int x, final int y, 
											  final int w, int h,
											  String propertiesFilename) {
						f.setTitle(title);
						f.setBounds(x,y,w,h);
						f.setVisible(true);
				
						statusArea.setBorder(BorderFactory.createEtchedBorder());
						statusArea.setLayout(new FlowLayout(FlowLayout.LEFT,0,0));
						statusArea.add(status);
						status.setHorizontalAlignment(JLabel.LEFT);
				
						f.setDefaultCloseOperation(
											WindowConstants.DISPOSE_ON_CLOSE);
				
						if(propertiesFilename != null) {
							resources = ResourceBundle.getBundle(
										propertiesFilename, Locale.getDefault());
						}
				
						f.addWindowListener(new WindowAdapter() {
							public void windowClosed(WindowEvent e) {
								System.exit(0);
							}
						});
					}
					static public JPanel getStatusArea() {
						return statusArea;
					}
					static public void showStatus(String s) {
						status.setText(s);
					}
					static Object getResource(String key) {
						if(resources != null) {
							return resources.getString(key);
						}
						return null;
					}
				}