Java JTree_1

package com.han;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;

public class JTree_1 extends JFrame {
    /**
     *
     */
    private static final long serialVersionUID = -2628449366554214781L;
    public JTree_1() {
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("根节点");
        DefaultMutableTreeNode nodeFirst = new DefaultMutableTreeNode("一级子节点A");
        root.add(nodeFirst);
        DefaultMutableTreeNode nodeSecond = new DefaultMutableTreeNode("二级子节点", false);
        nodeFirst.add(nodeSecond);
        root.add(new DefaultMutableTreeNode("一级子节点B"));
        JTree treeRoot = new JTree(root);
        getContentPane().add(treeRoot, BorderLayout.WEST);

        DefaultTreeModel defaultTreeModel = new DefaultTreeModel(root);
        JTree treeDefault = new JTree(defaultTreeModel);
        getContentPane().add(treeDefault, BorderLayout.CENTER);

        // recommended creating method
        DefaultTreeModel pointedTreeModel = new DefaultTreeModel(root, true);
        JTree treePointed = new JTree(pointedTreeModel);
        getContentPane().add(treePointed, BorderLayout.EAST);
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        JTree_1 instance = new JTree_1();
        instance.setVisible(true);
        instance.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        instance.pack();
    }

}

摘自 Gaowen_HAN的专栏

补充：软件开发 , Java ,