How can I use an invisible method in TreePath??

Question

Dear Friends:
I hope to use TreePath in following program to create another new TreePath with updated Object.
in following statement:
TreePath newObject = new TreePath(tree.getSelectionPath(),"NewPathHere");
I hope to keep same TreePath, but with new info.
anything wrong??
But it gets error:
The constructor TreePath(TreePath, Object) is not visible
Here the method is protected, I extends this TreePath class,
Why I cannot use this method to create a new TreePath with updated Info??
Regards
sunny
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.awt.*;
public class JTreeTraverse extends TreePath{
  public static void main(String args[]) {
    JFrame fm = new JFrame("JTree Traverse frame");
    String object[] = { "Cricket", "Hokey", "Football" };
    JTree tree = new JTree(object);
    tree.setRootVisible(true);
    TreeModel treemodel = tree.getModel();
    Object TraverseObject = treemodel.getRoot();
    if ((TraverseObject != null) && (TraverseObject instanceof
                 DefaultMutableTreeNode)) {
    TreeSelectionListener treeListener = new TreeSelectionListener() {
      public void valueChanged(TreeSelectionEvent treeSelectionEvent) {
        JTree tree = (JTree) treeSelectionEvent.getSource();
        TreePath object = tree.getSelectionPath();
        System.out.println(object);
        System.out.println(object.getPath());
        TreePath newObject = new TreePath(tree.getSelectionPath(),"NewPathHere");
        System.out.println(object);
        System.out.println(object.getPath());
    tree.addTreeSelectionListener(treeListener);
    JScrollPane scroll = new JScrollPane(tree);
    fm.getContentPane().add(scroll, BorderLayout.CENTER);
    fm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    fm.setSize(200, 200);
    fm.setVisible(true);
}

Answer 1

Dear Friends:
I hope to use TreePath in following program to create another new TreePath with updated Object.
in following statement:
TreePath newObject = new TreePath(tree.getSelectionPath(),"NewPathHere");
I hope to keep same TreePath, but with new info.
anything wrong??
But it gets error:
The constructor TreePath(TreePath, Object) is not visible
Here the method is protected, I extends this TreePath class,
Why I cannot use this method to create a new TreePath with updated Info??
Regards
sunny
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import java.awt.*;
public class JTreeTraverse extends TreePath{
  public static void main(String args[]) {
    JFrame fm = new JFrame("JTree Traverse frame");
    String object[] = { "Cricket", "Hokey", "Football" };
    JTree tree = new JTree(object);
    tree.setRootVisible(true);
    TreeModel treemodel = tree.getModel();
    Object TraverseObject = treemodel.getRoot();
    if ((TraverseObject != null) && (TraverseObject instanceof
                 DefaultMutableTreeNode)) {
    TreeSelectionListener treeListener = new TreeSelectionListener() {
      public void valueChanged(TreeSelectionEvent treeSelectionEvent) {
        JTree tree = (JTree) treeSelectionEvent.getSource();
        TreePath object = tree.getSelectionPath();
        System.out.println(object);
        System.out.println(object.getPath());
        TreePath newObject = new TreePath(tree.getSelectionPath(),"NewPathHere");
        System.out.println(object);
        System.out.println(object.getPath());
    tree.addTreeSelectionListener(treeListener);
    JScrollPane scroll = new JScrollPane(tree);
    fm.getContentPane().add(scroll, BorderLayout.CENTER);
    fm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    fm.setSize(200, 200);
    fm.setVisible(true);
}