JTree (TreeModel) vs (TreeNode)

Question

hellow,
I've got some troubles with a tree-view of my data model: I've created my own TreeModel, implemented the necessary methods, ...
Now, when I try to display the JTree with the TreeNode parameter (I parse the whole data tree) it works perfectly, but when I'm trying the TreeModel parameter, it only shows the root node (I tried "treeStructureChanged (event)" without result).
Does someone know what I might be forgetting ?
Can I add a treenodes manually (might give me a clue what I'm doing wrong in my implementation) ?
thx alot,
Jerry

Answer 1

public class X
static public TreeNode parseDataModel () { ... }
// parseDataModel() returns the tree root node.
tree = new JTree(parseDataModel());
treeView = new JScrollPane(tree);
frame.getContentPane().add(treeView, BorderLayout.WEST);
=> this works fine
public class MyTreeModel implements TreeModel { ... }
MyTreeModel mtm = new MyTreeModel();
JTree jTree = new JTree (mtm);
treeView = new JScrollPane(jTree);
frame.getContentPane().add(treeView, BorderLayout.WEST);
=> only shows the root node (double-clicking it has no effect; it has no 'folder' icon)