# Uses of Interface
java.awt.event.HierarchyListener

Packages that use HierarchyListener
Package
Description
java.awt
Contains all of the classes for creating user interfaces and for painting graphics and images.

- ## Uses of HierarchyListener in java.awt

  Classes in java.awt that implement HierarchyListener
  Modifier and Type
  Class
  Description
  `class`
  `AWTEventMulticaster`
  `AWTEventMulticaster` implements efficient and thread-safe multi-cast event dispatching for the AWT events defined in the `java.awt.event` package.
  Methods in java.awt that return HierarchyListener
  Modifier and Type
  Method
  Description
  `static HierarchyListener`
  AWTEventMulticaster.`add(HierarchyListener a, HierarchyListener b)`
  Adds hierarchy-listener-a with hierarchy-listener-b and returns the resulting multicast listener.
  `HierarchyListener[]`
  Component.`getHierarchyListeners()`
  Returns an array of all the hierarchy listeners registered on this component.
  `static HierarchyListener`
  AWTEventMulticaster.`remove(HierarchyListener l, HierarchyListener oldl)`
  Removes the old hierarchy-listener from hierarchy-listener-l and returns the resulting multicast listener.
  Methods in java.awt with parameters of type HierarchyListener
  Modifier and Type
  Method
  Description
  `static HierarchyListener`
  AWTEventMulticaster.`add(HierarchyListener a, HierarchyListener b)`
  Adds hierarchy-listener-a with hierarchy-listener-b and returns the resulting multicast listener.
  `void`
  Component.`addHierarchyListener(HierarchyListener l)`
  Adds the specified hierarchy listener to receive hierarchy changed events from this component when the hierarchy to which this container belongs changes.
  `static HierarchyListener`
  AWTEventMulticaster.`remove(HierarchyListener l, HierarchyListener oldl)`
  Removes the old hierarchy-listener from hierarchy-listener-l and returns the resulting multicast listener.
  `void`
  Component.`removeHierarchyListener(HierarchyListener l)`
  Removes the specified hierarchy listener so that it no longer receives hierarchy changed events from this component.