package ch12;import javax.swing.*;import javax.swing.tree.DefaultMutableTreeNode;/** * Created by Jiqing on 2016/12/9. */public class SimpleJTree {    // 定义属性    JFrame jf = new JFrame("简单树");    JTree tree;    DefaultMutableTreeNode root;    DefaultMutableTreeNode guangdong;    DefaultMutableTreeNode guangxi;    DefaultMutableTreeNode foshan;    DefaultMutableTreeNode shantou;    DefaultMutableTreeNode guilin;    DefaultMutableTreeNode nanning;    // 初始化    public void init() {        // 创建节点        root = new DefaultMutableTreeNode("中国");        guangdong = new DefaultMutableTreeNode("广东");        guangxi = new DefaultMutableTreeNode("广西");        foshan = new DefaultMutableTreeNode("佛山");        shantou = new DefaultMutableTreeNode("汕头");        guilin = new DefaultMutableTreeNode("桂林");        nanning = new DefaultMutableTreeNode("南宁");        // 通过add()方法建立树节点之间的父子关系        guangdong.add(foshan);        guangdong.add(shantou);        guangxi.add(guilin);        guangxi.add(nanning);        root.add(guangdong);        root.add(guangxi);        // 以根节点创建树        tree = new JTree(root);        jf.add(new JScrollPane(tree));        jf.pack();        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设置关闭,会返回Process finished with exit code 0        jf.setVisible(true);    }    public static void main(String[] args) {        new SimpleJTree().init();    }}本文转自TBHacker博客园博客，原文链接：http://www.cnblogs.com/jiqing9006/p/6152849.html，如需转载请自行联系原作者