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Article View: borland.public.jbuilder.java.swing
Article #11531

removing a node from a JTree

#11531
From: Stephan Grimm
Date: Wed, 19 May 1999 00:00
34 lines
1437 bytes
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
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From: Stephan Grimm <Stephan.Grimm@mgm-edv.de>
Subject: removing a node from a JTree
Date: 1999/05/19
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