which class are you actually looking for?
-- See if you can find what you're looking for in the
1.3 API These are some of the "Tree" type classes listed there:
TreeCellEditor
TreeCellRenderer
TreeExpansionEvent
TreeExpansionListener
TreeMap
TreeModel
TreeModelEvent
TreeModelListener
TreeNode
TreePath
TreeSelectionEvent
TreeSelectionListener
TreeSelectionModel
TreeSet
TreeUI
TreeWillExpandListener