🚀 go-pugleaf

Dear Stephan,

The trick is that you must not call methods of the TreeNode but of the
TreeModel:

DefaultTreeModel myTreeModel = new DefaultTreeModel();
...
myTreeModel.removeNodeFromParent(selectedNode);

good luck,

Sjaak Wolfert



Stephan Grimm wrote in message <37427B5A.B85EEA55@mgm-edv.de>...
>I have some problems in removing a TreeNode from a JTree.
>I'm using DefaultMutableTreeNode as class for the Node-Objects and tried
>the following remove-Operations:
>
>DefaultMutableTreeNode TreeNode=
>(DefaultMutableTreeNode)path.getLastPathComponent();
>DefaultMutableTreeNode parentTreeNode=
>(DefaultMutableTreeNode)path.getParentPath().getLastPathComponent();
>
>    // neither
> parentTreeNode.remove(index); //with index represents treeNode
>    // nor
> treeNode.removeFromParent();
>    // nor
> parentTreeNode.remove(treeNode);
>    // did remove anything
>
>All these remove-methods do not any modification to the JTree-Object, it
>doesn't change its structure and the nodes to remove remain at their
>places.
>Those methods don't return a value so that I could get aware of a
>fault-case.
>Could anyone explain me what is the mistake ?
>
>--
>
>
>
>-Stephan Grimm-
>
><Stephan.Grimm@mgm-edv.de>
><grst0018@fh-karlsruhe.de>
>
>GERMANY
>
>