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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: JTree add / remove nodes
Date: Thu, 05 Mar 2015 09:17:28 -0500
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On 03/05/2015 02:12 AM, Philipp Kraus wrote:
> Hello,
>
>
> I have got a tree dataset and I would like to visualize the data with a
> JTree component. The user should only brows in the tree, so no
> modifcation on the nodes is needed.

JTree.DynamicUtilTreeNode has a static
createChildren(DefaultMutableTreeNode parent, Object children)
method which is convenient for this.

>
> But I don't understand, which I can add and remove nodes from the tree.
> I have created this data
>
>
> *protected *DefaultMutableTreeNode *m_root *= *new
> *DefaultMutableTreeNode( *"myRoot" *);
> *protected final *JTree *m_tree *= *new *JTree( *m_root *);
> *protected final *TreeModel *m_model *= *new *DefaultTreeModel( *m_root *);
>
> and an empty tree is shown.
 >
 > But how can I add at this new nodes?
> My data are path strings like "root / subnode / subsubnode / leaf", so can I
> addthe full path to my tree which node / leaf creation on the fly?

> So I would push the the string to the tree and all parts should be created if
> it not exists. At the same way I get a path which should remove from the tree.

Now your tree has become dynamic?
You are responsible for implementing these behaviors
upon the TreeModel and MutableTreeNode interfaces.

>
> I'm a little bit overwhelmed with the JTree.
>