JTree - hidding root when showing the rest of the tree

Question

How can I hide only the root element when displaying the rest of a tree ?

Answer 1

Hi Zauz,
I unterstand your argumentation, but I have a problem with the implementation. Maybe you can show me your answer at a simple example:
DefaultMutableTreeNode root = new DefaultMutableTreeNode("world");
DefaultMutableTreeNode country1 = new DefaultMutableTreeNode("france"); // Chield 1
DefaultMutableTreeNode country2 = new DefaultMutableTreeNode("germany"); //Chield 2
DefaultMutableTreeNode country3 = new DefaultMutableTreeNode("norway"); //Chield 3
DefaultMutableTreeNode town1 = new DefaultMutableTreeNode("Frankfurt");
DefaultMutableTreeNode town2 = new DefaultMutableTreeNode("Berlin");
JTreetree = new JTree(root);
root.add(country1);
root.add(country2);
root.add(country3);
country2.add(town1);
country2.add(town2);
tree.expandRow(2); // 3 countries -1 = 2 children ????
tree.setRootVisible(false); // result 0 tree invisible ???