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

The following worked for me (called after setting the new model):

for (int i = 0; i < tree.getRowCount(); i++) {
    tree.expandRow(i);
}