public class ContainerEvent extends ComponentEvent
Container events are provided for notification purposes ONLY; The AWT will automatically handle changes to the containers contents internally so that the program works properly regardless of whether the program is receiving these events or not.
 This low-level event is generated by a container object (such as a
 Panel) when a component is added to it or removed from it.
 The event is passed to every ContainerListener
 or ContainerAdapter object which registered to receive such
 events using the component's addContainerListener method.
 (ContainerAdapter objects implement the
 ContainerListener interface.) Each such listener object
 gets this ContainerEvent when the event occurs.
 
 An unspecified behavior will be caused if the id parameter
 of any particular ContainerEvent instance is not
 in the range from CONTAINER_FIRST to CONTAINER_LAST.
ContainerAdapter, 
ContainerListener, 
Tutorial: Writing a Container Listener, 
Serialized Form| Modifier and Type | Field and Description | 
|---|---|
| static int | COMPONENT_ADDEDThis event indicates that a component was added to the container. | 
| static int | COMPONENT_REMOVEDThis event indicates that a component was removed from the container. | 
| static int | CONTAINER_FIRSTThe first number in the range of ids used for container events. | 
| static int | CONTAINER_LASTThe last number in the range of ids used for container events. | 
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWNACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASKsource| Constructor and Description | 
|---|
| ContainerEvent(Component source,
              int id,
              Component child)Constructs a  ContainerEventobject. | 
| Modifier and Type | Method and Description | 
|---|---|
| Component | getChild()Returns the component that was affected by the event. | 
| Container | getContainer()Returns the originator of the event. | 
| String | paramString()Returns a parameter string identifying this event. | 
getComponentgetSourcepublic static final int CONTAINER_FIRST
public static final int CONTAINER_LAST
public static final int COMPONENT_ADDED
public static final int COMPONENT_REMOVED
public ContainerEvent(Component source, int id, Component child)
ContainerEvent object.
  This method throws an
 IllegalArgumentException if source
 is null.
source - The Component object (container)
               that originated the eventid - An integer indicating the type of event.
                     For information on allowable values, see
                     the class description for ContainerEventchild - the component that was added or removedIllegalArgumentException - if source is nullgetContainer(), 
AWTEvent.getID(), 
getChild()public Container getContainer()
Container object that originated
 the event, or null if the object is not a
 Container.public Component getChild()
public String paramString()
paramString in class ComponentEvent Submit a bug or feature 
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