The Java Developers Almanac 1.4


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Home > List of Packages > javax.swing.tree  [15 examples] > Events  [2 examples]

e1033. Listening for Selection Events in a JTree Component

This example adds a listener for selection events to a tree component.
    
tree.addTreeSelectionListener(new TreeSelectionListener() {
        public void valueChanged(TreeSelectionEvent evt) {
            // Get all nodes whose selection status has changed
            TreePath[] paths = evt.getPaths();
    
            // Iterate through all affected nodes
            for (int i=0; i<paths.length; i++) {
                if (evt.isAddedPath(i)) {
                    // This node has been selected
                } else {
                    // This node has been deselected
                }
            }
        }
    });

 Related Examples
e1032. Listening for Expansion and Collapse Events in a JTree Component

See also: Layout    Node Expansion    Nodes    Selections   


© 2002 Addison-Wesley.