## Uses of Class
javax.swing.event.TreeExpansionEvent

- Packages that use TreeExpansionEvent
  Package | Description
  --- | ---
  javax.swing | Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.
  javax.swing.event | Provides for events fired by Swing components.
  javax.swing.plaf.basic | Provides user interface objects built according to the Basic look and feel.
  javax.swing.tree | Provides classes and interfaces for dealing with `javax.swing.JTree`.

- - ### Uses of TreeExpansionEvent in javax.swing

    Methods in javax.swing with parameters of type TreeExpansionEvent
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | JTree.AccessibleJTree.`treeCollapsed​(TreeExpansionEvent e)` | Tree Collapsed notification.
    `void` | JTree.AccessibleJTree.`treeExpanded​(TreeExpansionEvent e)` | Tree Model Expansion notification.

  - ### Uses of TreeExpansionEvent in javax.swing.event

    Methods in javax.swing.event with parameters of type TreeExpansionEvent
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | TreeExpansionListener.`treeCollapsed​(TreeExpansionEvent event)` | Called whenever an item in the tree has been collapsed.
    `void` | TreeExpansionListener.`treeExpanded​(TreeExpansionEvent event)` | Called whenever an item in the tree has been expanded.
    `void` | TreeWillExpandListener.`treeWillCollapse​(TreeExpansionEvent event)` | Invoked whenever a node in the tree is about to be collapsed.
    `void` | TreeWillExpandListener.`treeWillExpand​(TreeExpansionEvent event)` | Invoked whenever a node in the tree is about to be expanded.

  - ### Uses of TreeExpansionEvent in javax.swing.plaf.basic

    Methods in javax.swing.plaf.basic with parameters of type TreeExpansionEvent
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | BasicTreeUI.TreeExpansionHandler.`treeCollapsed​(TreeExpansionEvent event)` | Called whenever an item in the tree has been collapsed.
    `void` | BasicTreeUI.TreeExpansionHandler.`treeExpanded​(TreeExpansionEvent event)` | Called whenever an item in the tree has been expanded.

  - ### Uses of TreeExpansionEvent in javax.swing.tree

    Fields in javax.swing.tree declared as TreeExpansionEvent
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected TreeExpansionEvent` | ExpandVetoException.`event` | The event that the exception was created for.

    Constructors in javax.swing.tree with parameters of type TreeExpansionEvent
    Constructor | Description
    --- | ---
    `ExpandVetoException​(TreeExpansionEvent event)` | Constructs an ExpandVetoException object with no message.
    `ExpandVetoException​(TreeExpansionEvent event, String message)` | Constructs an ExpandVetoException object with the specified message.