[Chapter 20] 20.9 java.awt.event.ContainerEvent (JDK 1.1)

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| Chapter 20 The java.awt.event Package |

## 20.9 java.awt.event.ContainerEvent (JDK 1.1)

###

An event of this type serves as notification that the source `Container` has had a child added to it or removed from it. Note that this event is a notification only; the AWT adds or removes the child internally, and the recipient of this event need take no action itself.

`getChild()` returns the child `Component` that was added or removed, and `getContainer()` returns the `Container` that it was added to or removed from. `getContainer()` is simply a convenient alternative to `getSource()`.

`getID()` returns the constant `COMPONENT_ADDED` or `COMPONENT_REMOVED` to indicate whether the specified child was added or removed.

    public class ContainerEvent extends ComponentEvent {
        // Public Constructor
                public ContainerEvent(Component source, int id, Component child);
        // Constants
                public static final int COMPONENT_ADDED;
                public static final int COMPONENT_REMOVED;
                public static final int CONTAINER_FIRST;
                public static final int CONTAINER_LAST;
        // Public Instance Methods
                public Component getChild();
                public Container getContainer();
                public String paramString();  // Overrides ComponentEvent
    }

### Hierarchy:

`Object->EventObject(Serializable)->AWTEvent->ComponentEvent->ContainerEvent`

### Passed To:

`AWTEventMulticaster.componentAdded(), AWTEventMulticaster.componentRemoved(), Container.processContainerEvent(), ContainerAdapter.componentAdded(), ContainerAdapter.componentRemoved(), ContainerListener.componentAdded(), ContainerListener.componentRemoved()`

java.awt.event.ContainerAdapter (JDK 1.1) |  | java.awt.event.ContainerListener (JDK 1.1)