public interface ContainerListener extends EventListener
ContainerAdapter
class
(overriding only the methods of interest).
The listener object created from that class is then registered with a
component using the component's addContainerListener
method. When the container's contents change because a component
has been added or removed, the relevant method in the listener object
is invoked, and the ContainerEvent
is passed to it.
Container events are provided for notification purposes ONLY;
The AWT will automatically handle add and remove operations
internally so the program works properly regardless of
whether the program registers a ContainerListener
or not.
ContainerAdapter
,
ContainerEvent
,
Tutorial: Writing a Container ListenerModifier and Type | Method and Description |
---|---|
void |
componentAdded(ContainerEvent e)
Invoked when a component has been added to the container.
|
void |
componentRemoved(ContainerEvent e)
Invoked when a component has been removed from the container.
|
void componentAdded(ContainerEvent e)
void componentRemoved(ContainerEvent e)
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2017, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.