Class ContainerAdapter
- java.lang.Object
-
- java.awt.event.ContainerAdapter
- All Implemented Interfaces:
-
ContainerListener
,EventListener
public abstract class ContainerAdapter extends Object implements ContainerListener
An abstract adapter class for receiving container events. The methods in this class are empty. This class exists as convenience for creating listener objects.
Extend this class to create a ContainerEvent
listener and override the methods for the events of interest. (If you implement the ContainerListener
interface, you have to define all of the methods in it. This abstract class defines null methods for them all, so you can only have to define methods for events you care about.)
Create a listener object using the extended class and then register it 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.
- Since:
- 1.1
- See Also:
-
ContainerEvent
,ContainerListener
, Tutorial: Writing a Container Listener
Constructor Summary
Constructor | Description |
---|---|
ContainerAdapter() |
Method Summary
Modifier and Type | Method | 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. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
ContainerAdapter
public ContainerAdapter()
Method Detail
componentAdded
public void componentAdded(ContainerEvent e)
Invoked when a component has been added to the container.
- Specified by:
-
componentAdded
in interfaceContainerListener
- Parameters:
-
e
- the event to be processed
componentRemoved
public void componentRemoved(ContainerEvent e)
Invoked when a component has been removed from the container.
- Specified by:
-
componentRemoved
in interfaceContainerListener
- Parameters:
-
e
- the event to be processed