JTree Path expansion help

Question

Hi,
I have made my own jtree to load all the directories in the c drive. I am making a simple windows type browser. I allow users to select a driectory and create a new directory within it. The thing is, once this new directory is created it doesnt show up so i reinitialize the JTree to load all the directories again, and this time the new directory shows up in the directory it was created in. The problem is that before i reinitialize the tree again, i save a treepath for the directory the user is creating a new directory in., but after i reinitialize the tree i need to expand back to that path, i try using expandPath(savedTreePath) but its not working. Any ideas? Code is below.
private class NewFolderListener implements ActionListener {
          public void actionPerformed(ActionEvent evt) {
               DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode) tree
                         .getLastSelectedPathComponent();
               if (selectedNode == null) {
                    System.out.println("New folder not created");
                    return;
               File temp = (File) selectedNode.getUserObject();
               String newFolderPath = temp.getAbsolutePath() + "\\" + "New Folder";
               System.out.println(temp);
               temp = new File(newFolderPath);
               temp.mkdir();
                        TreePath tp = new TreePath(selectedNode.getPath);
               makeTree();
                         tree.expandPath(tp);
//Reinitialize tree method
private void makeTree() {
          try {
               //setLook();
               tree = new SimpleTree("C:\\");
               //location.setText("C:\\");
               splitPane.setLeftComponent(new JScrollPane(tree));
               tree.addTreeSelectionListener(new TreeSelectionListener() {
                   public void valueChanged(TreeSelectionEvent e) {
                       DefaultMutableTreeNode node = (DefaultMutableTreeNode)
                                          tree.getLastSelectedPathComponent();
                       if(node!=null){
                            MyFile mf = (MyFile)node.getUserObject();
                            location.setText(mf.getAbsolutePath());     
                            fselected = mf;
                       makeRightPane();
               tree.setExpandsSelectedPaths(true);
               //cp.validate();
          } catch (Exception e) {
     }Anyone have any idea what i am doing wrong?

Answer 1

Well ive tried using the tree model, calling methods
such as reload() reload(node) , but none of the
reloaded the new directory which was created for the
node.The reload() method is only useful when you have modified existing nodes.
Use other methods defined in DefaultTreeModel to change tree structure.