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Cloning nodes in JTree

Hi I have a basic tree.

Now I want to create Tree A and Tree B which will
have the nodes of basic tree and some additional
nodes.

I get the nodes of the basic tree by
DefaultMutableTreeNode rootNode = (DefaultMutableTreeNode)basicTree. getModel().getRoot();

Enumeration enum = rootNode.children();
childCount = rootNode.getChildCount();

The problem is once I add these nodes to Tree A
I cannot add these nodes to Tree B.

infact after adding the nodes to Tree A
if I do : childCount = rootNode.getChildCount();
I get childCount = 0;

I dont know how the basic tree gets affected
I think I have to do deep cloning and then
work on the cloned node.

Any suggestions?

If I can see come code snippet of deep cloning
a node . it will be helpful

Structure of tree example:

fab ---- root node
name ----node
address --node
city --node

each of the children name, address, city
have multiple nodes.
I want to copy all the children of
the root node to multiple trees.

Mick Barry

Well without seeing the code that's adding nodes it's a bit hard to help.
Sounds though, like what you need to do is create new instance of the node from tree A, to add to the tree B.

Igor Bazarny

Here is deepClone sample:

MutableTreeNode deepClone(MutableTreeNode root){
MutableTreeNode newRoot = (MutableTreeNode)root.clone();
// Take care of user object cloning, if necessary.
for(Enumeration childEnum = root.children(); childEnum.hasMoreElements();){
newRoot.add(deepClone((MutableTreeNode)childEnum.nextElement()));
}
}

Regards,
Igor Bazarny,
Brainbench MVP for Java 1
www.brainbench.com

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Igor Bazarny

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Igor Bazarny

sanjay_thakur,

Most typical grades are A and B here. People typically explain source of dissatisfaction when assign "C" grade to answer. If you have more questions anyone will try to make explanation more clear.

Thanks,
Igor Bazarny