- All Superinterfaces:
- EventListener
- All Known Implementing Classes:
- BasicTreeUI.TreeExpansionHandler,- JTree.AccessibleJTree
The listener that's notified when a tree expands or collapses
 a node.
 For further documentation and examples see
 How to Write a Tree Expansion Listener,
 a section in The Java Tutorial.
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Method SummaryModifier and TypeMethodDescriptionvoidtreeCollapsed(TreeExpansionEvent event) Called whenever an item in the tree has been collapsed.voidtreeExpanded(TreeExpansionEvent event) Called whenever an item in the tree has been expanded.
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Method Details- 
treeExpandedCalled whenever an item in the tree has been expanded.- Parameters:
- event- a- TreeExpansionEventcontaining a- TreePathobject for the expanded node
 
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treeCollapsedCalled whenever an item in the tree has been collapsed.- Parameters:
- event- a- TreeExpansionEventcontaining a- TreePathobject for the collapsed node
 
 
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