public class ComponentEvent extends AWTEvent
Component events are provided for notification purposes ONLY; The AWT will automatically handle component moves and resizes internally so that GUI layout works properly regardless of whether a program is receiving these events or not.
In addition to serving as the base class for other component-related events (InputEvent, FocusEvent, WindowEvent, ContainerEvent), this class defines the events that indicate changes in a component's size, position, or visibility.
This low-level event is generated by a component object (such as a
List) when the component is moved, resized, rendered invisible, or made
visible again. The event is passed to every
ComponentAdapter object which registered to receive such
events using the component's
ComponentAdapter objects implement the
ComponentListener interface.) Each such listener object
ComponentEvent when the event occurs.
An unspecified behavior will be caused if the
of any particular
ComponentEvent instance is not
in the range from
|Modifier and Type||Field and Description|
The first number in the range of ids used for component events.
This event indicates that the component was rendered invisible.
The last number in the range of ids used for component events.
This event indicates that the component's position changed.
This event indicates that the component's size changed.
This event indicates that the component was made visible.
ACTION_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_MASK
|Constructor and Description|
|Modifier and Type||Method and Description|
Returns the originator of the event.
Returns a parameter string identifying this event.
public static final int COMPONENT_FIRST
public static final int COMPONENT_LAST
public static final int COMPONENT_MOVED
public static final int COMPONENT_RESIZED
public static final int COMPONENT_SHOWN
public static final int COMPONENT_HIDDEN
public ComponentEvent(Component source, int id)
This method throws an
public Component getComponent()
Componentobject that originated the event, or
nullif the object is not a
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