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- All Superinterfaces:
- EventListener
- All Known Implementing Classes:
- AWTEventMulticaster
public interface HierarchyListener extends EventListener
The listener interface for receiving hierarchy changed events. The class that is interested in processing a hierarchy changed event should implement this interface. The listener object created from that class is then registered with a Component using the Component'saddHierarchyListener
method. When the hierarchy to which the Component belongs changes, thehierarchyChanged
method in the listener object is invoked, and theHierarchyEvent
is passed to it.Hierarchy events are provided for notification purposes ONLY; The AWT will automatically handle changes to the hierarchy internally so that GUI layout, displayability, and visibility work properly regardless of whether a program registers a
HierarchyListener
or not.- Since:
- 1.3
- See Also:
HierarchyEvent
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Method Summary
Methods Modifier and Type Method and Description void
hierarchyChanged(HierarchyEvent e)
Called when the hierarchy has been changed.
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Method Detail
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hierarchyChanged
void hierarchyChanged(HierarchyEvent e)
Called when the hierarchy has been changed. To discern the actual type of change, callHierarchyEvent.getChangeFlags()
.- See Also:
HierarchyEvent.getChangeFlags()
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Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-java/awt/event/hierarchylistener.html
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