Java JTree_5

package com.han;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;

public class JTree_5 extends JFrame {

    /**
     *
     */
    private static final long serialVersionUID = -7187852901157241733L;

    public JTree_5() {
        // TODO Auto-generated constructor stub
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("倾城爱家");
        DefaultMutableTreeNode nodeA = new DefaultMutableTreeNode("经理办公室");
        DefaultMutableTreeNode nodeB = new DefaultMutableTreeNode("人事部");
        DefaultMutableTreeNode nodeC = new DefaultMutableTreeNode("技术部");
        DefaultMutableTreeNode nodeD = new DefaultMutableTreeNode("服务部");
        DefaultMutableTreeNode nodeE = new DefaultMutableTreeNode("推广部");

        DefaultMutableTreeNode nodeCA = new DefaultMutableTreeNode("网络维护部");
        DefaultMutableTreeNode nodeCB = new DefaultMutableTreeNode("应用开发部");

        DefaultMutableTreeNode nodeDA = new DefaultMutableTreeNode("网络服务部");
        DefaultMutableTreeNode nodeDB = new DefaultMutableTreeNode("内勤开发部");

        root.add(nodeA);
        root.add(nodeB);
        root.add(nodeC);
        root.add(nodeD);
        root.add(nodeE);
        nodeC.add(nodeCA);
        nodeC.add(nodeCB);
        nodeD.add(nodeDA);
        nodeD.add(nodeDB);

        final DefaultTreeModel treeModel = new DefaultTreeModel(root, true);
        final JTree tree =new JTree(treeModel);

        Container container = getContentPane();
        container.add(tree, BorderLayout.CENTER);

        @SuppressWarnings("rawtypes")
        Enumeration enumeration = root.preorderEnumeration();
        while (enumeration.hasMoreElements()) {
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) enumeration.nextElement();
            tree.expandPath(new TreePath(node.getPath()));
        }

        JPanel panel = new JPanel(new GridLayout(1, 5, 10, 10));
        container.add(panel, BorderLayout.SOUTH);
        JLabel label = new JLabel("名称：");
        final JTextField textField = new JTextField("测试");
        JButton button1 = new JButton("添加");
        JButton button2 = new JButton("修改");
        JButton button3 = new JButton("删除");
        panel.add(label);
        panel.add(textField);
        panel.add(button1);
        panel.add(button2);
        panel.add(button3);

        // add
        button1.addActionListener(new ActionListener(){

            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                DefaultMutableTreeNode node = new DefaultMutableTreeNode(textField.getText());
                TreePath path = tree.getSelectionPath();
                DefaultMutableTreeNode parent = (DefaultMutableTreeNode) path.getLastPathComponent();
                treeModel.insertNodeInto(node, parent, parent.getChildCount());
                TreePath newNodePath = path.pathByAddingChild(node);
                if (!tree.isVisible(newNodePath)) {
                    tree.makeVisible(newNodePath);
                }
                tree.setSelectionPath(newNodePath);
            }

补充：软件开发 , Java ,