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JTree not updating

Rik Sweeney
Ranch Hand

Joined: Sep 04, 2001
Posts: 36

I'm adding nodes to my JTree, but it is not being updated. If I add a node to the root, then the tree updates OK, but then if I add another, nothing happens. If I then add a node to the child of the node, then the tree updates OK and will show the node number as if all the other nodes have been added.

Anyway, here's the code

Does anyone know what I'm doing wrong?


Andr� Latour

Joined: May 22, 2006
Posts: 15
Hello Rik,

only an idea:

After you rebuild your tree, add the "new" rootElement to your DefaultTreeModel

something like this:

[ May 23, 2006: Message edited by: Andr� Latour ]
Rik Sweeney
Ranch Hand

Joined: Sep 04, 2001
Posts: 36
Thanks for the suggestion. I had a quick look in the constructor and changed it to

This solved the problem!
I agree. Here's the link:
subject: JTree not updating
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