The Java Developers Almanac 1.4

e1026. Removing a Node to a JTree Component

    // Create tree
    JTree tree = new JTree();
    DefaultTreeModel model = (DefaultTreeModel)tree.getModel();
    
    // Find node to remove
    int startRow = 0;
    String prefix = "b";
    TreePath path = tree.getNextMatch(prefix, startRow, Position.Bias.Forward);
    MutableTreeNode node = (MutableTreeNode)path.getLastPathComponent();
    
    // Remove node; if node has descendants, all descendants are removed as well
    model.removeNodeFromParent(node);
    
    // The root cannot be removed with removeNodeFromParent();
    // use the following to remove the root
    model.setRoot(null);

Related Examples

e1023. Visiting All the Nodes in a JTree Component
e1024. Finding a Node in a JTree Component
e1025. Adding a Node to a JTree Component
e1027. Converting a Node in a JTree Component to a TreePath
e1028. Converting All Nodes in a JTree Component to a TreePath Array

See also: Events    Layout    Node Expansion    Selections

© 2002 Addison-Wesley.