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## java.awt.event
Interface HierarchyBoundsListener

All Superinterfaces:
  EventListener

All Known Implementing Classes:
  AWTEventMulticaster, HierarchyBoundsAdapter

public interface HierarchyBoundsListener
extends EventListener

The listener interface for receiving ancestor moved and resized events. The class that is interested in processing these events either implements this interface (and all the methods it contains) or extends the abstract `HierarchyBoundsAdapter` class (overriding only the method of interest). The listener object created from that class is then registered with a Component using the Component's `addHierarchyBoundsListener` method. When the hierarchy to which the Component belongs changes by the resizing or movement of an ancestor, the relevant method in the listener object is invoked, and the `HierarchyEvent` 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 works properly regardless of whether a program registers an `HierarchyBoundsListener` or not.

Since:
  1.3
See Also:
  `HierarchyBoundsAdapter`, `HierarchyEvent`

Method Summary
`void` | `ancestorMoved(HierarchyEvent e)` Called when an ancestor of the source is moved.
`void` | `ancestorResized(HierarchyEvent e)` Called when an ancestor of the source is resized.

Method Detail

### ancestorMoved

    public void ancestorMoved(HierarchyEvent e)

  Called when an ancestor of the source is moved.

### ancestorResized

    public void ancestorResized(HierarchyEvent e)

  Called when an ancestor of the source is resized.

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