Get child of DefaultMutableTreeNode

Hello.

I have a DefaultMutableTreeNode.

This DMTN has several children.

I want to do something like this:

Code:

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for(int i = 0; i< dmt.getChildCount(); i++){

[INDENT]System.out.println(dmt.getChildAt(i).getUserObject().toString());[/INDENT]

}

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Simple enough. However, apparently the method getChildAt(int) returns an object of type TreeNode rather than DefaultMutableTreeNode.

TreeNodes don't have a getUserObject() method.


ALSO, I am not allowed to cast a TreeNode to a DefaultMutableTreeNode.

Seriously java? Why can't I get the child of a DefaultMutableTreeNode as a DefaultMutableTreeNode.

Please let me know if there is a method of doing what I want to do (iterate through the children of my dmtn and do something with their userObject).

Quote:

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Originally Posted by PrinceSendai

ALSO, I am not allowed to cast a TreeNode to a DefaultMutableTreeNode.

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The getChildAt( ... ) method is defined in the interface TreeNode and that interface knows nothing about DefaultMutableTreeNodes; but you do: if all your nodes in the tree are DefaultMutableTreeNodes you can cast all you want.

kind regards,

Jos

Okay, I think my tree is not made of DefaultMutableTreeNodes.

I generated my tree from vectors, which ultimately use a custom-made object as values.

I wanted to work with this custom made object that I generated the tree from.

How do I work with the objects of the tree, given the fact that I generated it from vectors?

OR is there no way to retrieve the values from the tree once I have generated it from vectors?

Quote:

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Originally Posted by PrinceSendai

Okay, I think my tree is not made of DefaultMutableTreeNodes.

I generated my tree from vectors, which ultimately use a custom-made object as values.

I wanted to work with this custom made object that I generated the tree from.

How do I work with the objects of the tree, given the fact that I generated it from vectors?

OR is there no way to retrieve the values from the tree once I have generated it from vectors?

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I guess all your nodes are DefaultMutableTreeNodes; show us your code where the cast fails; I bet you have your parentheses wrong ...

kind regards,

Jos

Thanks. You were right. I think it was a parentheses issue. Now the cast works.