javax.swing.tree
Interfaces 
MutableTreeNode
RowMapper
TreeCellEditor
TreeCellRenderer
TreeModel
TreeNode
TreeSelectionModel
Classes 
AbstractLayoutCache
AbstractLayoutCache.NodeDimensions
DefaultMutableTreeNode
DefaultTreeCellEditor
DefaultTreeCellRenderer
DefaultTreeModel
DefaultTreeSelectionModel
FixedHeightLayoutCache
TreePath
VariableHeightLayoutCache
Exceptions 
ExpandVetoException