JTREE LEAF...PLS help////

Question

Hm.. i got a problem here.I have created i JTRee and the sub item which is the leaves.How to extend all the leaf node once the Jtree is open

Answer 1

More dukes please :-)
Look at the last line that read tree.expandPath(...)
Note: sometimes DefaultMutableTreeNode.add() and remove() doesn't work well with the JTree so I've changed it to ((DefaultTableModel)jtree.getModel()).insertNodeInto(...) instead
    private void createNodes(JTree tree, DefaultMutableTreeNode top) {
        DefaultMutableTreeNode category = null;
        DefaultMutableTreeNode book = null;
        category = new DefaultMutableTreeNode("Chapter 1 ");
        ((DefaultTreeModel) tree.getModel()).insertNodeInto(category, top, top.getChildCount());
        book = new DefaultMutableTreeNode(new BookInfo("Lesson1-Overview",
        "AD1-1.html"));
        ((DefaultTreeModel) tree.getModel()).insertNodeInto(book, category, category.getChildCount());
        book = new DefaultMutableTreeNode(new BookInfo("Lesson2-Overview2",
        "AD1-2.html"));
        ((DefaultTreeModel) tree.getModel()).insertNodeInto(book, category, category.getChildCount());
        tree.expandPath(new TreePath(category.getPath()));
    }Don't forget the dukes :-)