One revision to my suggestion would be to not have a separate interface for branch vs. regular node. We can probably use the existing MyFaces TreeNode interface which has an isLeaf method. It turns out this is how its done in the Swing version of TreeNode so we should probably conform to that.
One question for Oliver would be why the children() method returns an Interrator instead of Enumeration as in the Swing version? Other than this method the TreeNode interface seems to match the Swing version. Also, would it be appropriate to just use the javax.swing.tree.TreeNode interface? If the interfaces are identical maybe we could just use the one in the java API. Its a little odd perhaps but I can't really think of a good reason not to do so. sean
