Make all leaf visible in JTree

Question

I haved tryied to make my jtree totaly expanded but with no success.
The code belowe is what i tride with, butt all my leafs do not expand just to
the las node.
Are there realy no method for this?
* expandAll
* Expands / collaps a tree.
public void expandAll(JTree tree, boolean expand) {
TreeNode root = (TreeNode)tree.getModel().getRoot();
// Traverse tree from root
expandAll(tree, new TreePath(root), expand);
private void expandAll(JTree tree, TreePath parent, boolean expand) {
// Traverse children
TreeNode node = (TreeNode)parent.getLastPathComponent();
if (node.getChildCount() >= 0) {
for (Enumeration e=node.children();
e.hasMoreElements(); ) {
TreeNode n = (TreeNode)e.nextElement();
TreePath path = parent.pathByAddingChild(n);
expandAll(tree, path, expand);
// Expansion or collapse must be done bottom-up
if (expand) {
tree.expandPath(parent);
} else {
tree.collapsePath(parent);
System.out.println("c "+parent);
/**********************************************************/

Answer 1

This code works for me. I hope it works for you also.
I have a JTree called myTree with a TreeModel called myTreeModel. The solution has two methods. The first method "expandTree()" is what you call to show all the branches. This method will get the root node from the tree model and then call the method that exands all the paths, "expandEntireTree(TreeNode)". This recursive method will call itself for each of it's children.
Good luck,
Kevin Ford
public void expandTree() {
     expandEntireTree((DefaultMutableTreeNode) myTreeModel.getRoot());
private void expandEntireTree(TreeNode tNode) {
     TreePath tp=new TreePath(((DefaultMutableTreeNode)tNode).getPath());
     myTree.expandPath(tp);
     for(int i = 0; i < tNode.getChildCount(); i++) {
          expandEntireTree(tNode.getChildAt(i));
}