How do I remove a node from JTree?

The code below demonstrates how to delete a node from a JTree component.

package org.kodejava.swing;

import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class JTreeRemoveNode extends JFrame {
    public JTreeRemoveNode() throws HeadlessException {

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new JTreeRemoveNode().setVisible(true));

    private void initializeUI() {
        setSize(400, 400);

        DefaultMutableTreeNode root = new DefaultMutableTreeNode("Address Book");
        String[] names = new String[]{"Alice", "Bob", "Carol", "Mallory"};
        for (String name : names) {
            DefaultMutableTreeNode node = new DefaultMutableTreeNode(name);

        final JTree tree = new JTree(root);
        JScrollPane pane = new JScrollPane(tree);
        pane.setPreferredSize(new Dimension(400, 400));

        JButton removeButton = new JButton("Remove");
        removeButton.addActionListener(e -> {
            DefaultTreeModel model = (DefaultTreeModel) tree.getModel();

            TreePath[] paths = tree.getSelectionPaths();
            if (paths != null) {
                for (TreePath path : paths) {
                    DefaultMutableTreeNode node = (DefaultMutableTreeNode)
                    if (node.getParent() != null) {

        getContentPane().setLayout(new BorderLayout());
        getContentPane().add(tree, BorderLayout.CENTER);
        getContentPane().add(removeButton, BorderLayout.SOUTH);

Remove a node from JTree


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.