I figured it out. i used
tree.getTreeState().expandNode(destinationNode);
> From: swarn...@hotmail.com
> To: users@wicket.apache.org
> Subject: expandPath in AbstractTree
> Date: Thu, 19 Nov 2009 14:38:23 -0800
>
>
> I see that wicket 1.2 had expandPath in AbstractTree which i don't see
> anymore in 1.4. I want to use this so that I can expand some node (not the
> current node) can you please let me know how I can do this in 1.4
>
> expandPath
> public void expandPath(javax.swing.tree.TreePath path)
> Ensures that the node identified by the specified path is expanded and
> viewable. If the last item in the path is a leaf, this will have no
> effect.
>
>
> Parameters:path - the TreePath identifying a node
>
