Forcing a JTree to only accept one type of node?

So I have a JTree and I want to make sure that all of its nodes are of the same, specific type (that type being a custom extension of DefaultMutableTreeNode).
The way to do this that initially crosses my mind is to extend JTree and override the add method and constructor to only accept nodes of this type (and just throw an exception if given a node if a different type). Then I realized that if someone connected up a bunch of some other kind of node but rooted it with the custom node, the custom JTree would accept it. Then I thought I'd probably have to override my node's add method so that you can't add nodes of other types to it either. This seems like a lot of work that I'd like to avoid if possible.
Does anyone see a more straightforward way of doing this?

Don't subclass JTree. Subclass DefaultTreeModel to only accept your kind of node, or probably better still, just write your own TreeModel. Making the modifications to TreeNode seems odd to me.

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Screen1.jpg
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cid:[email protected]
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Ph: +61 3 8683 1996 | Fax: +61 3 8683 1444 | Mob: 0407 485 228
Email: [email protected]
PO Box 321, South Melbourne | VIC 3205 | Australia
http://www.aurecongroup.com
http://www.aurecongroup.com/apac/groupentity/

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Message was edited by: R_Kelly

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Forcing a JTree to only accept one type of node?

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