Help with developing a dynamic JTree

Question

Hi,
I have developed a webspider that clicks on links in a website. The current url that is bein processed is stored in a string call msg. At the moment I have developed a JTree that use msg to create its nodes. But it is desplaying as follows:
root|
|-url 1
|-url 1a
| -url 2
| - url 2a
I would like my JTree to be displayed as follows:
root|
|-url 1
| |-url 1a
| -url 2
| - url 2a
So that the jtree represents the structure of the website.
How would I go about tackling this so that my tree would display like this?
here is the code that I have written for adding the string msg, which is a url to the tree:
//this method will update the currently processing field on the GUI
public class CurrentlyProcessing implements Runnable
public String msg;
//public String msgInfo = msg;
public void run()
current.setText("Currently Processing: " + msg );
addObject(msg);
//add a node to the tree
public DefaultMutableTreeNode addObject (Object child)
DefaultMutableTreeNode parentNode = null;
return addObject(parentNode, child, true);
public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,Object child,boolean shouldBeVisible)
DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(child);
if (parent == null)
parent = rootNode;
treeModel.insertNodeInto(childNode, parent, parent.getChildCount());
if (shouldBeVisible)
tree.scrollPathToVisible(new TreePath(childNode.getPath()));
return childNode;
Also would it be possible to select a node and manipulate the url to view the webpage?
mr v

Answer 1

I mean it displays like this:
root|
|-url 1
|-url 1a
| -url 2
| - url 2a
I would like my JTree to be displayed as follows:
root|
|-url 1
| |-url 1a
| -url 2
| | - url 2a