Copyright (c) SEMM NL All rights reserved.
Author : Paul Hamaker. Part of JavaLessons.com

We want to make a JTree,...

but first we have to create its stem and branches.

After setting up the tree-structure, we construct the JTree...

with the DefaultMutableTreeNode stem as argument.

By defining this method...

this class implements javax.swing.event.TreeSelectionListener,...

and, as such, it can be notified when the user makes a selection in the tree.

When the user selects, the JTree is asked for the selection and this is shown as a String.

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Insert as first node.

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Removing nodes.

.