在树中添加TreeSelectionListener,在它的valueChanged(TreeSelectionEvent se){JTree tree = se.getSource();
DefaultMutableNode selectNode = (DefaultMutableNode )tree.getLastSelectedPathComponent();
String str = selectNode.toString();
}
str即是你所要的。
DefaultMutableNode selectNode = (DefaultMutableNode )tree.getLastSelectedPathComponent();
String str = selectNode.toString();
}
str即是你所要的。
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import com.borland.jbcl.layout.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.util.Vector;/**
* Title:
* Description:
* Copyright: Copyright (c) 2002
* Company:
* @author
* @version 1.0
*/public class Frame1 extends JFrame {
XYLayout xYLayout1 = new XYLayout();
JComboBox jComboBox1 = new JComboBox();
JTextField jTextField1 = new JTextField();
Vector vecL=new Vector();
JTree jTree1;// = new JTree();
DefaultMutableTreeNode root; public Frame1() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
private void jbInit() throws Exception {
this.getContentPane().setLayout(xYLayout1);
/* for(int i=0;i<20;i++){
vecL.add(new String(Integer.toString(i)));
}
for(int i=0;i<20;i+=4){
System.out.println("!!!!!第"+i+"个元素 = "+vecL.elementAt(i)); }*/
creatTree();
jTree1 = new JTree(root);
jTree1.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
jTree1.addTreeSelectionListener(new SelListener());
jComboBox1.addItem("OK");
jComboBox1.addItem("NO");
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jComboBox1_actionPerformed(e);
System.out.println("Hello!");
}
});
this.getContentPane().add(jTree1, new XYConstraints(32, 32, 94, 131));
this.getContentPane().add(jComboBox1, new XYConstraints(189, 85, -1, -1));
this.getContentPane().add(jTextField1, new XYConstraints(166, 145, 183, -1));
} void jComboBox1_actionPerformed(ActionEvent e) { }
void creatTree()
{
root = new DefaultMutableTreeNode("C:"+"\\");
DefaultMutableTreeNode pro = new DefaultMutableTreeNode("Program Files"); DefaultMutableTreeNode game = new DefaultMutableTreeNode("Game"); DefaultMutableTreeNode age = new DefaultMutableTreeNode("age");
DefaultMutableTreeNode brood = new DefaultMutableTreeNode("brood");
game.add(age);
game.add(brood); root.add(game);
root.add(pro);
} class SelListener implements TreeSelectionListener{
public void valueChanged(TreeSelectionEvent se)
{
JTree tree = (JTree)se.getSource();
DefaultMutableTreeNode selNode = (DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
jTextField1.setText(selNode.toString()); }
}public static void main(String[] args){
try {
//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//UIManager.setLookAndFeel(new com.sun.java.swing.plaf.motif.MotifLookAndFeel());
//UIManager.setLookAndFeel(new javax.swing.plaf.multi.MultiLookAndFeel()); }
catch(Exception e) {
e.printStackTrace();
}
Frame1 frame=new Frame1();
frame.setSize(600,400);
frame.setLocation(100,100);
frame.show();
}
}