Package Summary Overview Summary

class:TreeExpansionListener [NONE]

All Superinterfaces:

EventListener

All Known Implementing Classes:

BasicTreeUI.TreeExpansionHandler, JTree.AccessibleJTree
```
public interface TreeExpansionListener
extends EventListener
```
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.

method:treeExpanded(javax.swing.event.TreeExpansionEvent) [NONE]

treeExpanded
```
void treeExpanded(TreeExpansionEvent event)
```
Called whenever an item in the tree has been expanded.

Parameters:

event - a TreeExpansionEvent containing a TreePath object for the expanded node

method:treeCollapsed(javax.swing.event.TreeExpansionEvent) [NONE]

treeCollapsed
```
void treeCollapsed(TreeExpansionEvent event)
```
Called whenever an item in the tree has been collapsed.

Parameters:

event - a TreeExpansionEvent containing a TreePath object for the collapsed node

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