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| Chapter 21 java.awt.event Reference |

# ContainerListener

## Name

ContainerListener

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## Description

Objects that implement the `ContainerListener` interface can receive `ContainerEvent` objects. Listeners must first register themselves with objects that produce events. When events occur, they are then automatically propagated to all registered listeners.

## Interface Definition

    public abstract interface java.awt.event.ContainerListener
       extends java.util.EventListener {
      // Instance Methods
      public abstract void componentAdded (ContainerEvent e);
      public abstract void componentRemoved (ContainerEvent e);
    }

## Interface Methods

### componentAdded

#### public abstract void componentAdded (ContainerEvent e)

Parameters

  e

    The event that occurred.

Description

  Notifies the `ContainerListener` that a component has been added to the container.

### componentRemoved

#### public abstract void componentRemoved (ContainerEvent e)

Parameters

  e

    The event that occurred.

Description

  Notifies the `ContainerListener` that a component has been removed from the container.

## See Also

`Container` `Adapter`, `ContainerEvent`, `EventListener`

ContainerEvent |  | FocusAdapter