package com.zxl;import javax.swing.*; import javax.swing.tree.DefaultMutableTreeNode;/*** @Description: //TODO 樹形菜單* @Author: zhangxueliang* @Create: 2021-05-17 17:05* @Version: 1.0**/ public class JTreeDemo {public static void main(String[] args) {DefaultMutableTreeNode root = new DefaultMutableTreeNode("中國(guó)");DefaultMutableTreeNode hb = new DefaultMutableTreeNode("湖北");DefaultMutableTreeNode wh = new DefaultMutableTreeNode("武漢");DefaultMutableTreeNode xg = new DefaultMutableTreeNode("孝感");DefaultMutableTreeNode hn = new DefaultMutableTreeNode("湖南");DefaultMutableTreeNode cs = new DefaultMutableTreeNode("長(zhǎng)沙");root.add(hb);root.add(hn);hb.add(wh);hb.add(xg);hn.add(cs);JFrame jFrame = new JFrame();JTree jTree = new JTree(root);jFrame.add(jTree);jFrame.setVisible(true);jFrame.setSize(250, 250);jFrame.setLocationRelativeTo(null);jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);} }

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