《Java2图形设计卷II：Swing》配套光盘源码

				import javax.swing.*;
				import javax.swing.tree.*;
				import java.awt.*;
				import java.awt.event.*;
				import java.util.*;
				
				public class Test extends JApplet {
					public void init() {
						JTree tree = new JTree();
						JScrollPane scrollPane = new JScrollPane(tree);
						JComboBox combo = new JComboBox();
				
						combo.addItem("red");
						combo.addItem("blue");
						combo.addItem("green");
						combo.addItem("orange");
						combo.addItem("yellow");
						combo.addItem("magenta");
				
						tree.setCellEditor(new DefaultTreeCellEditor(
							tree, new DefaultTreeCellRenderer(),
							new ColorEditor(tree, combo)));
				
						tree.setEditable(true);
				
						getContentPane().add(scrollPane);
					}
				}
				class ColorEditor extends DefaultCellEditor {
					private JTree tree;
				
					public ColorEditor(JTree tree, JComboBox comboBox) {
						super(comboBox);
						this.tree = tree;
					}
					public boolean isCellEditable(EventObject e) {
						boolean rv = false;  // return value
				
						if(e instanceof MouseEvent) {
							MouseEvent me = (MouseEvent)e;
				
							if(me.getClickCount() == 3) {
								TreePath path =
									tree.getPathForLocation(me.getX(), me.getY());	
				
								if(path.getPathCount() == 1) // root node
									return false;
				
								DefaultMutableTreeNode node = 
									(DefaultMutableTreeNode)
												   path.getLastPathComponent();		
												   
								rv = node.getParent().toString().equals("colors");
							}
						}
						return rv;
					}
				}