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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/AWTEvent.html below:

AWTEvent (Java SE 19 & JDK 19)

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ActionEvent, AdjustmentEvent, AncestorEvent, ComponentEvent, HierarchyEvent, InputMethodEvent, InternalFrameEvent, InvocationEvent, ItemEvent, TextEvent

The root event class for all AWT events. This class and its subclasses supersede the original java.awt.Event class. Subclasses of this root AWTEvent class defined outside of the java.awt.event package should define event ID values greater than the value defined by RESERVED_ID_MAX.

The event masks defined in this class are needed by Component subclasses which are using Component.enableEvents() to select for event types not selected by registered listeners. If a listener is registered on a component, the appropriate event mask is already set internally by the component.

The masks are also used to specify to which types of events an AWTEventListener should listen. The masks are bitwise-ORed together and passed to Toolkit.addAWTEventListener.

Since:

1.1

See Also:

• Component.enableEvents(long)
• Toolkit.addAWTEventListener(java.awt.event.AWTEventListener, long)
• ActionEvent
• AdjustmentEvent
• ComponentEvent
• ContainerEvent
• FocusEvent
• InputMethodEvent
• InvocationEvent
• ItemEvent
• HierarchyEvent
• KeyEvent
• MouseEvent
• MouseWheelEvent
• PaintEvent
• TextEvent
• WindowEvent
• Serialized Form

• Field Summary

  Fields

  static final long

  The event mask for selecting action events.

  static final long

  The event mask for selecting adjustment events.

  static final long

  The event mask for selecting component events.

  protected boolean

  Controls whether or not the event is sent back down to the peer once the source has processed it - false means it's sent to the peer; true means it's not.

  static final long

  The event mask for selecting container events.

  static final long

  The event mask for selecting focus events.

  static final long

  The event mask for selecting hierarchy bounds events.

  static final long

  The event mask for selecting hierarchy events.

  protected int

  static final long

  The event mask for selecting input method events.

  static final long

  The event mask for selecting invocation events.

  static final long

  The event mask for selecting item events.

  static final long

  The event mask for selecting key events.

  static final long

  The event mask for selecting mouse events.

  static final long

  The event mask for selecting mouse motion events.

  static final long

  The event mask for selecting mouse wheel events.

  static final long

  The event mask for selecting paint events.

  static final int

  The maximum value for reserved AWT event IDs.

  static final long

  The event mask for selecting text events.

  static final long

  The event mask for selecting window events.

  static final long

  The event mask for selecting window focus events.

  static final long

  The event mask for selecting window state events.

• Constructor Summary

  Constructors

  Constructs an AWTEvent object with the specified source object and type.

• Method Summary

  protected void

  Consumes this event, if this event can be consumed.

  int

  protected boolean

  Returns whether this event has been consumed.

  Returns a string representing the state of this Event.

  void

  Retargets an event to a new source.

  Returns a String representation of this object.

• Field Details
  • id

    protected int id

    The event's id.

    See Also:

    • getID()
    • AWTEvent(java.lang.Object, int)

  • consumed

    protected boolean consumed

    Controls whether or not the event is sent back down to the peer once the source has processed it - false means it's sent to the peer; true means it's not. Semantic events always have a 'true' value since they were generated by the peer in response to a low-level event.

    See Also:

    • consume()
    • isConsumed()

  • COMPONENT_EVENT_MASK

    public static final long COMPONENT_EVENT_MASK

    The event mask for selecting component events.

    See Also:

    • Constant Field Values

  • CONTAINER_EVENT_MASK

    public static final long CONTAINER_EVENT_MASK

    The event mask for selecting container events.

    See Also:

    • Constant Field Values

  • FOCUS_EVENT_MASK

    public static final long FOCUS_EVENT_MASK

    The event mask for selecting focus events.

    See Also:

    • Constant Field Values

  • KEY_EVENT_MASK

    public static final long KEY_EVENT_MASK

    The event mask for selecting key events.

    See Also:

    • Constant Field Values

  • MOUSE_EVENT_MASK

    public static final long MOUSE_EVENT_MASK

    The event mask for selecting mouse events.

    See Also:

    • Constant Field Values

  • MOUSE_MOTION_EVENT_MASK

    public static final long MOUSE_MOTION_EVENT_MASK

    The event mask for selecting mouse motion events.

    See Also:

    • Constant Field Values

  • WINDOW_EVENT_MASK

    public static final long WINDOW_EVENT_MASK

    The event mask for selecting window events.

    See Also:

    • Constant Field Values

  • ACTION_EVENT_MASK

    public static final long ACTION_EVENT_MASK

    The event mask for selecting action events.

    See Also:

    • Constant Field Values

  • ADJUSTMENT_EVENT_MASK

    public static final long ADJUSTMENT_EVENT_MASK

    The event mask for selecting adjustment events.

    See Also:

    • Constant Field Values

  • ITEM_EVENT_MASK

    public static final long ITEM_EVENT_MASK

    The event mask for selecting item events.

    See Also:

    • Constant Field Values

  • TEXT_EVENT_MASK

    public static final long TEXT_EVENT_MASK

    The event mask for selecting text events.

    See Also:

    • Constant Field Values

  • INPUT_METHOD_EVENT_MASK

    public static final long INPUT_METHOD_EVENT_MASK

    The event mask for selecting input method events.

    See Also:

    • Constant Field Values

  • PAINT_EVENT_MASK

    public static final long PAINT_EVENT_MASK

    The event mask for selecting paint events.

    See Also:

    • Constant Field Values

  • INVOCATION_EVENT_MASK

    public static final long INVOCATION_EVENT_MASK

    The event mask for selecting invocation events.

    See Also:

    • Constant Field Values

  • HIERARCHY_EVENT_MASK

    public static final long HIERARCHY_EVENT_MASK

    The event mask for selecting hierarchy events.

    See Also:

    • Constant Field Values

  • HIERARCHY_BOUNDS_EVENT_MASK

    public static final long HIERARCHY_BOUNDS_EVENT_MASK

    The event mask for selecting hierarchy bounds events.

    See Also:

    • Constant Field Values

  • MOUSE_WHEEL_EVENT_MASK

    public static final long MOUSE_WHEEL_EVENT_MASK

    The event mask for selecting mouse wheel events.

    Since:

    1.4

    See Also:

    • Constant Field Values

  • WINDOW_STATE_EVENT_MASK

    public static final long WINDOW_STATE_EVENT_MASK

    The event mask for selecting window state events.

    Since:

    1.4

    See Also:

    • Constant Field Values

  • WINDOW_FOCUS_EVENT_MASK

    public static final long WINDOW_FOCUS_EVENT_MASK

    The event mask for selecting window focus events.

    Since:

    1.4

    See Also:

    • Constant Field Values

  • RESERVED_ID_MAX

    public static final int RESERVED_ID_MAX

    The maximum value for reserved AWT event IDs. Programs defining their own event IDs should use IDs greater than this value.

    See Also:

    • Constant Field Values

• Constructor Details
  • AWTEvent

    Constructs an AWTEvent object from the parameters of a 1.0-style event.

    Parameters:

    event - the old-style event

  • AWTEvent public AWTEvent(Object source, int id)

    Constructs an AWTEvent object with the specified source object and type.

    Parameters:

    source - the object where the event originated

    id - the event type

• Method Details
  • setSource public void setSource(Object newSource)

    This method is intended to be used only by event targeting subsystems, such as client-defined KeyboardFocusManagers. It is not for general client use.

    Parameters:

    newSource - the new Object to which the event should be dispatched

    Since:

    1.4

  • getID

    public int getID()

    Returns the event type.

    Returns:

    the event's type id

  • toString

    Returns a String representation of this object.

    Overrides:

    toString in class EventObject

    Returns:

    a String representation of this EventObject

  • paramString

    Returns a string representing the state of this Event. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

    Returns:

    a string representation of this event

  • consume

    protected void consume()

    Consumes this event, if this event can be consumed. Only low-level, system events can be consumed

  • isConsumed

    protected boolean isConsumed()

    Returns whether this event has been consumed.

    Returns:

    true if this event has been consumed; otherwise false

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