Folder's First in JTree

[claude jones]

Hello,
I am adding folders and leaves to a JTree dynamical. The problem I am having is the placement of the folders when adding them to the tree.
For example, if I had 4 leaves and 4 folders under a rootNode, I would like all folders first and the leaves following.
Good:
RootNode
- Folder 1
- Folder 2
- Folder 3
- Folder 4
- Leaf 1
- Leaf 2
- Leaf 3
- Leaf 4
Bad:
RootNode
- Folder 1
- Leaf 1
- Leaf 2
- Leaf 3
- Folder 2
- Folder 3
- Leaf 4
- Folder 4

[Manfred Leonhardt]

Hi Claude,
I think your app will have to reorder the items because the JTree doesn't see any difference between a folder and a leaf.
Regards,
Manfred.

[Renee Zhang]

When you say "Folder", you mean there are children under the "Folder" treeNode?
If it is, then you can divide all nodes into 2 groups by calling node.isleaf() method, then order it.
Good Luck!

[claude jones]

Thanks Manfred, I was afraid of that.

[claude jones]

Thanks Renee, that sounds like the solution.