How do I auto-expand a JTree when setting a new TreeModel?

Question

I have a custom JTree and a custom JModel; I would for the JTree to \"auto-expand\" when I give it a new model. At the moment, it simply collapse a

Answer 1

There's also this non-recursive version.

private void expandAllNodes(JTree tree) {
    int j = tree.getRowCount();
    int i = 0;
    while(i < j) {
        tree.expandRow(i);
        i += 1;
        j = tree.getRowCount();
    }
}