/**
*
*/
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.JPanel;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
/**
* This class is to enumerate all the nodes of a tree in different ways ...
* 遍历树节点
* @author HAN
*
*/
public class JTree_3 extends JFrame {
/**
*
*/
private static final long serialVersionUID = -4405016910342910815L;
DefaultMutableTreeNode root;
/**
*
*/
public JTree_3() {
root = new DefaultMutableTreeNode("ROOT");
DefaultMutableTreeNode nodeA = new DefaultMutableTreeNode("nodeA");
DefaultMutableTreeNode nodeB = new DefaultMutableTreeNode("nodeB");
DefaultMutableTreeNode nodeC = new DefaultMutableTreeNode("nodeC");
root.add(nodeA);
root.add(nodeB);
root.add(nodeC);
DefaultMutableTreeNode nodeAA = new DefaultMutableTreeNode("nodeAA");
nodeA.add(nodeAA);
nodeA.add(nodeAB);
DefaultMutableTreeNode nodeCA = new DefaultMutableTreeNode("nodeCA");
DefaultMutableTreeNode nodeCB = new DefaultMutableTreeNode("nodeCB");
DefaultMutableTreeNode nodeCC = new DefaultMutableTreeNode("nodeCC");
nodeC.add(nodeCA);
nodeC.add(nodeCB);
nodeC.add(nodeCC);
DefaultMutableTreeNode nodeCBA = new DefaultMutableTreeNode("nodeCBA");
DefaultMutableTreeNode nodeCBB = new DefaultMutableTreeNode("nodeCBB");
nodeCB.add(nodeCBA);
nodeCB.add(nodeCBB);
DefaultTreeModel defaultTreeModel = new DefaultTreeModel(root);
JTree tree = new JTree(defaultTreeModel);
@SuppressWarnings("rawtypes")
Enumeration enumeration = root.preorderEnumeration();
while (enumeration.hasMoreElements()) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) enumeration.nextElement();
TreePath treePath = new TreePath(node.getPath());
tree.expandPath(treePath);
}
Container container = getContentPane();
container.add(tree, BorderLayout.WEST);
// Dimension dimension = container.getPreferredSize();
JPanel panel = new JPanel(new GridLayout(5, 1, 10, 10));
JButton b1 = new JButton("按前序遍历");
JButton b2 = new JButton("按后序遍历");
JButton b3 = new JButton("以广度优先遍历");
JButton b4 = new JButton("以深度优先遍历");
JButton b5 = new JButton("遍历直属子节点");
panel.add(b1);
panel.add(b2);
panel.add(b3);
panel.add(b4);
panel.add(b5);
container.add(panel, BorderLayout.CENTER);
b1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub