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java.awt
abstract public class: Component [javadoc | source]
java.lang.Object
   java.awt.Component

All Implemented Interfaces:
    MenuContainer, Serializable, ImageObserver

A component is an object having a graphical representation that can be displayed on the screen and that can interact with the user. Examples of components are the buttons, checkboxes, and scrollbars of a typical graphical user interface.

The Component class is the abstract superclass of the nonmenu-related Abstract Window Toolkit components. Class Component can also be extended directly to create a lightweight component. A lightweight component is a component that is not associated with a native window. On the contrary, a heavyweight component is associated with a native window. The #isLightweight() method may be used to distinguish between the two kinds of the components.

Lightweight and heavyweight components may be mixed in a single component hierarchy. However, for correct operating of such a mixed hierarchy of components, the whole hierarchy must be valid. When the hierarchy gets invalidated, like after changing the bounds of components, or adding/removing components to/from containers, the whole hierarchy must be validated afterwards by means of the Container#validate() method invoked on the top-most invalid container of the hierarchy.

Serialization

It is important to note that only AWT listeners which conform to the Serializable protocol will be saved when the object is stored. If an AWT object has listeners that aren't marked serializable, they will be dropped at writeObject time. Developers will need, as always, to consider the implications of making an object serializable. One situation to watch out for is this:
   import java.awt.*;
   import java.awt.event.*;
   import java.io.Serializable;

   class MyApp implements ActionListener, Serializable
   {
       BigObjectThatShouldNotBeSerializedWithAButton bigOne;
       Button aButton = new Button();

       MyApp()
       {
           // Oops, now aButton has a listener with a reference
           // to bigOne!
           aButton.addActionListener(this);
       }

       public void actionPerformed(ActionEvent e)
       {
           System.out.println("Hello There");
       }
   }
In this example, serializing aButton by itself will cause MyApp and everything it refers to to be serialized as well. The problem is that the listener is serializable by coincidence, not by design. To separate the decisions about MyApp and the ActionListener being serializable one can use a nested class, as in the following example:
   import java.awt.*;
   import java.awt.event.*;
   import java.io.Serializable;

   class MyApp java.io.Serializable
   {
        BigObjectThatShouldNotBeSerializedWithAButton bigOne;
        Button aButton = new Button();

        static class MyActionListener implements ActionListener
        {
            public void actionPerformed(ActionEvent e)
            {
                System.out.println("Hello There");
            }
        }

        MyApp()
        {
            aButton.addActionListener(new MyActionListener());
        }
   }

Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

For details on the focus subsystem, see How to Use the Focus Subsystem, a section in The Java Tutorial, and the Focus Specification for more information.

Nested Class Summary:
static class  Component.AWTTreeLock   
public enum class  Component.BaselineResizeBehavior  Enumeration of the common ways the baseline of a component can change as the size changes. The baseline resize behavior is primarily for layout managers that need to know how the position of the baseline changes as the component size changes. In general the baseline resize behavior will be valid for sizes greater than or equal to the minimum size (the actual minimum size; not a developer specified minimum size). For sizes smaller than the minimum size the baseline may change in a way other than the baseline resize behavior indicates. Similarly, as the size approaches Integer.MAX_VALUE and/or Short.MAX_VALUE the baseline may change in a way other than the baseline resize behavior indicates. 
protected class  Component.FlipBufferStrategy  Inner class for flipping buffers on a component. That component must be a Canvas or Window
protected class  Component.BltBufferStrategy  Inner class for blitting offscreen surfaces to a component. 
abstract protected class  Component.AccessibleAWTComponent  Inner class of Component used to provide default support for accessibility. This class is not meant to be used directly by application developers, but is instead meant only to be subclassed by component developers.

The class used to obtain the accessible role for this object. 

Field Summary
transient  ComponentPeer peer    The peer of the component. The peer implements the component's behavior. The peer is set when the Component is added to a container that also is a peer. 
transient  Container parent    The parent of the object. It may be null for top-level components. 
transient  AppContext appContext    The AppContext of the component. Applets/Plugin may change the AppContext. 
 int x    The x position of the component in the parent's coordinate system. 
 int y    The y position of the component in the parent's coordinate system. 
 int width    The width of the component. 
 int height    The height of the component. 
 Color foreground    The foreground color for this component. foreground can be null. 
 Color background    The background color for this component. background can be null. 
 Font font    The font used by this component. The font can be null. 
 Font peerFont    The font which the peer is currently using. (null if no peer exists.) 
 Cursor cursor    The cursor displayed when pointer is over this component. This value can be null. 
 Locale locale    The locale for the component. 
transient  BufferStrategy bufferStrategy    A reference to a BufferStrategy object used to manipulate the buffers on this component. 
 boolean ignoreRepaint    True when the object should ignore all repaint events. 
 boolean visible    True when the object is visible. An object that is not visible is not drawn on the screen. 
 boolean enabled    True when the object is enabled. An object that is not enabled does not interact with the user. 
 DropTarget dropTarget    The DropTarget associated with this component. 
 Vector popups   
    Also see:
    add
    serial:
 
 Set[] focusTraversalKeys    The focus traversal keys. These keys will generate focus traversal behavior for Components for which focus traversal keys are enabled. If a value of null is specified for a traversal key, this Component inherits that traversal key from its parent. If all ancestors of this Component have null specified for that traversal key, then the current KeyboardFocusManager's default traversal key is used. 
static final  Object LOCK    The locking object for AWT component-tree and layout operations. 
 Dimension minSize    Minimum size. (This field perhaps should have been transient).
    serial:
 
 boolean minSizeSet    Whether or not setMinimumSize has been invoked with a non-null value. 
 Dimension prefSize    Preferred size. (This field perhaps should have been transient).
    serial:
 
 boolean prefSizeSet    Whether or not setPreferredSize has been invoked with a non-null value. 
 Dimension maxSize    Maximum size
    serial:
 
 boolean maxSizeSet    Whether or not setMaximumSize has been invoked with a non-null value. 
transient  ComponentOrientation componentOrientation    The orientation for this component. 
 boolean newEventsOnly    newEventsOnly will be true if the event is one of the event types enabled for the component. It will then allow for normal processing to continue. If it is false the event is passed to the component's parent and up the ancestor tree until the event has been consumed. 
transient  ComponentListener componentListener     
transient  FocusListener focusListener     
transient  HierarchyListener hierarchyListener     
transient  HierarchyBoundsListener hierarchyBoundsListener     
transient  KeyListener keyListener     
transient  MouseListener mouseListener     
transient  MouseMotionListener mouseMotionListener     
transient  MouseWheelListener mouseWheelListener     
transient  InputMethodListener inputMethodListener     
transient  RuntimeException windowClosingException     
static final  String actionListenerK    Internal, constants for serialization 
static final  String adjustmentListenerK     
static final  String componentListenerK     
static final  String containerListenerK     
static final  String focusListenerK     
static final  String itemListenerK     
static final  String keyListenerK     
static final  String mouseListenerK     
static final  String mouseMotionListenerK     
static final  String mouseWheelListenerK     
static final  String textListenerK     
static final  String ownedWindowK     
static final  String windowListenerK     
static final  String inputMethodListenerK     
static final  String hierarchyListenerK     
static final  String hierarchyBoundsListenerK     
static final  String windowStateListenerK     
static final  String windowFocusListenerK     
 long eventMask    The eventMask is ONLY set by subclasses via enableEvents. The mask should NOT be set when listeners are registered so that we can distinguish the difference between when listeners request events and subclasses request them. One bit is used to indicate whether input methods are enabled; this bit is set by enableInputMethods and is on by default. 
static  boolean isInc    Static properties for incremental drawing. 
static  int incRate     
public static final  float TOP_ALIGNMENT    Ease-of-use constant for getAlignmentY(). Specifies an alignment to the top of the component. 
public static final  float CENTER_ALIGNMENT    Ease-of-use constant for getAlignmentY and getAlignmentX. Specifies an alignment to the center of the component 
public static final  float BOTTOM_ALIGNMENT    Ease-of-use constant for getAlignmentY. Specifies an alignment to the bottom of the component. 
public static final  float LEFT_ALIGNMENT    Ease-of-use constant for getAlignmentX. Specifies an alignment to the left side of the component. 
public static final  float RIGHT_ALIGNMENT    Ease-of-use constant for getAlignmentX. Specifies an alignment to the right side of the component. 
 boolean isPacked     
transient  boolean backgroundEraseDisabled     
transient  EventQueueItem[] eventCache     
 AccessibleContext accessibleContext     
Constructor:
 protected Component() 
Method from java.awt.Component Summary:
action,   add,   addComponentListener,   addFocusListener,   addHierarchyBoundsListener,   addHierarchyListener,   addInputMethodListener,   addKeyListener,   addMouseListener,   addMouseMotionListener,   addMouseWheelListener,   addNotify,   addPropertyChangeListener,   addPropertyChangeListener,   adjustListeningChildrenOnParent,   applyComponentOrientation,   applyCompoundShape,   applyCurrentShape,   areBoundsValid,   areFocusTraversalKeysSet,   areInputMethodsEnabled,   autoProcessMouseWheel,   bounds,   canBeFocusOwner,   canBeFocusOwnerRecursively,   checkGD,   checkImage,   checkImage,   checkTreeLock,   checkWindowClosingException,   clearCurrentFocusCycleRootOnHide,   clearMostRecentFocusOwnerOnHide,   coalesceEvents,   constructComponentName,   contains,   contains,   containsFocus,   countHierarchyMembers,   createBufferStrategy,   createBufferStrategy,   createHierarchyEvents,   createImage,   createImage,   createVolatileImage,   createVolatileImage,   deliverEvent,   disable,   disableEvents,   dispatchEvent,   dispatchEventImpl,   dispatchMouseWheelToAncestor,   doLayout,   enable,   enable,   enableEvents,   enableInputMethods,   eventEnabled,   eventTypeEnabled,   findUnderMouseInWindow,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   firePropertyChange,   getAccessControlContext,   getAccessibleContext,   getAccessibleIndexInParent,   getAccessibleStateSet,   getAlignmentX,   getAlignmentY,   getBackBuffer,   getBackground,   getBaseline,   getBaselineResizeBehavior,   getBounds,   getBounds,   getBoundsOp,   getBufferStrategy,   getColorModel,   getComponentAt,   getComponentAt,   getComponentListeners,   getComponentOrientation,   getContainer,   getContainingWindow,   getCursor,   getCursor_NoClientCode,   getDropTarget,   getFocusCycleRootAncestor,   getFocusListeners,   getFocusTraversalKeys,   getFocusTraversalKeysEnabled,   getFocusTraversalKeys_NoIDCheck,   getFont,   getFontMetrics,   getFont_NoClientCode,   getForeground,   getGraphics,   getGraphicsConfiguration,   getGraphicsConfiguration_NoClientCode,   getGraphics_NoClientCode,   getHWPeerAboveMe,   getHeight,   getHierarchyBoundsListeners,   getHierarchyListeners,   getIgnoreRepaint,   getInputContext,   getInputMethodListeners,   getInputMethodRequests,   getKeyListeners,   getListeners,   getLocale,   getLocation,   getLocation,   getLocationOnScreen,   getLocationOnScreen_NoTreeLock,   getLocationOnWindow,   getMaximumSize,   getMinimumSize,   getMouseListeners,   getMouseMotionListeners,   getMousePosition,   getMouseWheelListeners,   getName,   getNativeContainer,   getNextFocusCandidate,   getNormalShape,   getObjectLock,   getOpaqueShape,   getParent,   getParent_NoClientCode,   getPeer,   getPreferredSize,   getPropertyChangeListeners,   getPropertyChangeListeners,   getSiblingIndexAbove,   getSiblingIndexBelow,   getSize,   getSize,   getToolkit,   getToolkitImpl,   getTraversalRoot,   getTreeLock,   getWidth,   getX,   getY,   gotFocus,   handleEvent,   hasFocus,   hide,   imageUpdate,   initializeFocusTraversalKeys,   inside,   invalidate,   invalidateIfValid,   invalidateParent,   isAutoFocusTransferOnDisposal,   isBackgroundSet,   isCoalescingEnabled,   isCursorSet,   isDisplayable,   isDoubleBuffered,   isEnabled,   isEnabledImpl,   isFocusCycleRoot,   isFocusOwner,   isFocusTraversable,   isFocusTraversableOverridden,   isFocusable,   isFontSet,   isForegroundSet,   isInstanceOf,   isLightweight,   isMaximumSizeSet,   isMinimumSizeSet,   isMixingNeeded,   isNonOpaqueForMixing,   isOpaque,   isPreferredSizeSet,   isRecursivelyVisible,   isSameOrAncestorOf,   isShowing,   isValid,   isVisible,   isVisible_NoClientCode,   keyDown,   keyUp,   layout,   lightweightPaint,   lightweightPrint,   list,   list,   list,   list,   list,   locate,   location,   lostFocus,   minimumSize,   mixOnHiding,   mixOnReshaping,   mixOnShowing,   mixOnValidating,   mixOnZOrderChanging,   mouseDown,   mouseDrag,   mouseEnter,   mouseExit,   mouseMove,   mouseUp,   move,   nextFocus,   numListening,   paint,   paintAll,   paintHeavyweightComponents,   paramString,   pointRelativeToComponent,   postEvent,   postsOldMouseEvents,   preferredSize,   prepareImage,   prepareImage,   print,   printAll,   printHeavyweightComponents,   processComponentEvent,   processEvent,   processFocusEvent,   processHierarchyBoundsEvent,   processHierarchyEvent,   processInputMethodEvent,   processKeyEvent,   processMouseEvent,   processMouseMotionEvent,   processMouseWheelEvent,   relocateComponent,   remove,   removeComponentListener,   removeFocusListener,   removeHierarchyBoundsListener,   removeHierarchyListener,   removeInputMethodListener,   removeKeyListener,   removeMouseListener,   removeMouseMotionListener,   removeMouseWheelListener,   removeNotify,   removePropertyChangeListener,   removePropertyChangeListener,   repaint,   repaint,   repaint,   repaint,   requestFocus,   requestFocus,   requestFocus,   requestFocus,   requestFocusHelper,   requestFocusHelper,   requestFocusInWindow,   requestFocusInWindow,   requestFocusInWindow,   requestFocusInWindow,   reshape,   resize,   resize,   revalidate,   setAutoFocusTransferOnDisposal,   setBackground,   setBounds,   setBounds,   setBoundsOp,   setComponentOrientation,   setCursor,   setDropTarget,   setEnabled,   setFocusTraversalKeys,   setFocusTraversalKeysEnabled,   setFocusTraversalKeys_NoIDCheck,   setFocusable,   setFont,   setForeground,   setGraphicsConfiguration,   setIgnoreRepaint,   setLocale,   setLocation,   setLocation,   setMaximumSize,   setMinimumSize,   setName,   setPreferredSize,   setRequestFocusController,   setSize,   setSize,   setVisible,   show,   show,   size,   subtractAndApplyShape,   subtractAndApplyShapeBelowMe,   toString,   transferFocus,   transferFocus,   transferFocusBackward,   transferFocusBackward,   transferFocusUpCycle,   update,   updateCursorImmediately,   updateGraphicsData,   updateZOrder,   validate
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from java.awt.Component Detail:
 public boolean action(Event evt,
    Object what) 
Deprecated! As - of JDK version 1.1, should register this component as ActionListener on component which fires action events.

 public  void add(PopupMenu popup) 
    Adds the specified popup menu to the component.
 public synchronized  void addComponentListener(ComponentListener l) 
    Adds the specified component listener to receive component events from this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addFocusListener(FocusListener l) 
    Adds the specified focus listener to receive focus events from this component when this component gains input focus. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void addHierarchyBoundsListener(HierarchyBoundsListener l) 
    Adds the specified hierarchy bounds listener to receive hierarchy bounds events from this component when the hierarchy to which this container belongs changes. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void addHierarchyListener(HierarchyListener l) 
    Adds the specified hierarchy listener to receive hierarchy changed events from this component when the hierarchy to which this container belongs changes. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addInputMethodListener(InputMethodListener l) 
    Adds the specified input method listener to receive input method events from this component. A component will only receive input method events from input methods if it also overrides getInputMethodRequests to return an InputMethodRequests instance. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addKeyListener(KeyListener l) 
    Adds the specified key listener to receive key events from this component. If l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addMouseListener(MouseListener l) 
    Adds the specified mouse listener to receive mouse events from this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addMouseMotionListener(MouseMotionListener l) 
    Adds the specified mouse motion listener to receive mouse motion events from this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void addMouseWheelListener(MouseWheelListener l) 
    Adds the specified mouse wheel listener to receive mouse wheel events from this component. Containers also receive mouse wheel events from sub-components.

    For information on how mouse wheel events are dispatched, see the class description for MouseWheelEvent .

    If l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void addNotify() 
    Makes this Component displayable by connecting it to a native screen resource. This method is called internally by the toolkit and should not be called directly by programs.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void addPropertyChangeListener(PropertyChangeListener listener) 
    Adds a PropertyChangeListener to the listener list. The listener is registered for all bound properties of this class, including the following:
    • this Component's font ("font")
    • this Component's background color ("background")
    • this Component's foreground color ("foreground")
    • this Component's focusability ("focusable")
    • this Component's focus traversal keys enabled state ("focusTraversalKeysEnabled")
    • this Component's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
    • this Component's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
    • this Component's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
    • this Component's preferred size ("preferredSize")
    • this Component's minimum size ("minimumSize")
    • this Component's maximum size ("maximumSize")
    • this Component's name ("name")
    Note that if this Component is inheriting a bound property, then no event will be fired in response to a change in the inherited property.

    If listener is null, no exception is thrown and no action is performed.

 public  void addPropertyChangeListener(String propertyName,
    PropertyChangeListener listener) 
    Adds a PropertyChangeListener to the listener list for a specific property. The specified property may be user-defined, or one of the following:
    • this Component's font ("font")
    • this Component's background color ("background")
    • this Component's foreground color ("foreground")
    • this Component's focusability ("focusable")
    • this Component's focus traversal keys enabled state ("focusTraversalKeysEnabled")
    • this Component's Set of FORWARD_TRAVERSAL_KEYS ("forwardFocusTraversalKeys")
    • this Component's Set of BACKWARD_TRAVERSAL_KEYS ("backwardFocusTraversalKeys")
    • this Component's Set of UP_CYCLE_TRAVERSAL_KEYS ("upCycleFocusTraversalKeys")
    Note that if this Component is inheriting a bound property, then no event will be fired in response to a change in the inherited property.

    If propertyName or listener is null, no exception is thrown and no action is taken.

  void adjustListeningChildrenOnParent(long mask,
    int num) 
 public  void applyComponentOrientation(ComponentOrientation orientation) 
    Sets the ComponentOrientation property of this component and all components contained within it.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

  void applyCompoundShape(Region shape) 
    Applies the shape to the component
  void applyCurrentShape() 
 final boolean areBoundsValid() 
    Check whether we can trust the current bounds of the component. The return value of false indicates that the container of the component is invalid, and therefore needs to be layed out, which would probably mean changing the bounds of its children. Null-layout of the container or absence of the container mean the bounds of the component are final and can be trusted.
 public boolean areFocusTraversalKeysSet(int id) 
    Returns whether the Set of focus traversal keys for the given focus traversal operation has been explicitly defined for this Component. If this method returns false, this Component is inheriting the Set from an ancestor, or from the current KeyboardFocusManager.
 boolean areInputMethodsEnabled() 
  void autoProcessMouseWheel(MouseWheelEvent e) 
 public Rectangle bounds() 
Deprecated! As - of JDK version 1.1, replaced by getBounds().

 final boolean canBeFocusOwner() 
 final boolean canBeFocusOwnerRecursively() 
    Checks that this component meets the prerequesites to be focus owner: - it is enabled, visible, focusable - it's parents are all enabled and showing - top-level window is focusable - if focus cycle root has DefaultFocusTraversalPolicy then it also checks that this policy accepts this component as focus owner
  void checkGD(String stringID) 
    Checks that this component's GraphicsDevice idString matches the string argument.
 public int checkImage(Image image,
    ImageObserver observer) 
    Returns the status of the construction of a screen representation of the specified image.

    This method does not cause the image to begin loading. An application must use the prepareImage method to force the loading of an image.

    Information on the flags returned by this method can be found with the discussion of the ImageObserver interface.

 public int checkImage(Image image,
    int width,
    int height,
    ImageObserver observer) 
    Returns the status of the construction of a screen representation of the specified image.

    This method does not cause the image to begin loading. An application must use the prepareImage method to force the loading of an image.

    The checkImage method of Component calls its peer's checkImage method to calculate the flags. If this component does not yet have a peer, the component's toolkit's checkImage method is called instead.

    Information on the flags returned by this method can be found with the discussion of the ImageObserver interface.

 final  void checkTreeLock() 
 boolean checkWindowClosingException() 
  void clearCurrentFocusCycleRootOnHide() 
  void clearMostRecentFocusOwnerOnHide() 
 protected AWTEvent coalesceEvents(AWTEvent existingEvent,
    AWTEvent newEvent) 
    Potentially coalesce an event being posted with an existing event. This method is called by EventQueue.postEvent if an event with the same ID as the event to be posted is found in the queue (both events must have this component as their source). This method either returns a coalesced event which replaces the existing event (and the new event is then discarded), or null to indicate that no combining should be done (add the second event to the end of the queue). Either event parameter may be modified and returned, as the other one is discarded unless null is returned.

    This implementation of coalesceEvents coalesces two event types: mouse move (and drag) events, and paint (and update) events. For mouse move events the last event is always returned, causing intermediate moves to be discarded. For paint events, the new event is coalesced into a complex RepaintArea in the peer. The new AWTEvent is always returned.

 String constructComponentName() 
    Constructs a name for this component. Called by getName when the name is null.
 public boolean contains(Point p) 
    Checks whether this component "contains" the specified point, where the point's x and y coordinates are defined to be relative to the coordinate system of this component.
 public boolean contains(int x,
    int y) 
    Checks whether this component "contains" the specified point, where x and y are defined to be relative to the coordinate system of this component.
 boolean containsFocus() 
 int countHierarchyMembers() 
  void createBufferStrategy(int numBuffers) 
    Creates a new strategy for multi-buffering on this component. Multi-buffering is useful for rendering performance. This method attempts to create the best strategy available with the number of buffers supplied. It will always create a BufferStrategy with that number of buffers. A page-flipping strategy is attempted first, then a blitting strategy using accelerated buffers. Finally, an unaccelerated blitting strategy is used.

    Each time this method is called, the existing buffer strategy for this component is discarded.

  void createBufferStrategy(int numBuffers,
    BufferCapabilities caps) throws AWTException 
    Creates a new strategy for multi-buffering on this component with the required buffer capabilities. This is useful, for example, if only accelerated memory or page flipping is desired (as specified by the buffer capabilities).

    Each time this method is called, dispose will be invoked on the existing BufferStrategy.

 int createHierarchyEvents(int id,
    Component changed,
    Container changedParent,
    long changeFlags,
    boolean enabledOnToolkit) 
 public Image createImage(ImageProducer producer) 
    Creates an image from the specified image producer.
 public Image createImage(int width,
    int height) 
    Creates an off-screen drawable image to be used for double buffering.
 public VolatileImage createVolatileImage(int width,
    int height) 
    Creates a volatile off-screen drawable image to be used for double buffering.
 public VolatileImage createVolatileImage(int width,
    int height,
    ImageCapabilities caps) throws AWTException 
    Creates a volatile off-screen drawable image, with the given capabilities. The contents of this image may be lost at any time due to operating system issues, so the image must be managed via the VolatileImage interface.
 public  void deliverEvent(Event e) 
Deprecated! As - of JDK version 1.1, replaced by dispatchEvent(AWTEvent e).

 public  void disable() 
Deprecated! As - of JDK version 1.1, replaced by setEnabled(boolean).

 protected final  void disableEvents(long eventsToDisable) 
    Disables the events defined by the specified event mask parameter from being delivered to this component.
 public final  void dispatchEvent(AWTEvent e) 
    Dispatches an event to this component or one of its sub components. Calls processEvent before returning for 1.1-style events which have been enabled for the Component.
  void dispatchEventImpl(AWTEvent e) 
 boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) 
 public  void doLayout() 
    Prompts the layout manager to lay out this component. This is usually called when the component (more specifically, container) is validated.
 public  void enable() 
Deprecated! As - of JDK version 1.1, replaced by setEnabled(boolean).

 public  void enable(boolean b) 
Deprecated! As - of JDK version 1.1, replaced by setEnabled(boolean).

 protected final  void enableEvents(long eventsToEnable) 
    Enables the events defined by the specified event mask parameter to be delivered to this component.

    Event types are automatically enabled when a listener for that event type is added to the component.

    This method only needs to be invoked by subclasses of Component which desire to have the specified event types delivered to processEvent regardless of whether or not a listener is registered.

 public  void enableInputMethods(boolean enable) 
    Enables or disables input method support for this component. If input method support is enabled and the component also processes key events, incoming events are offered to the current input method and will only be processed by the component or dispatched to its listeners if the input method does not consume them. By default, input method support is enabled.
 boolean eventEnabled(AWTEvent e) 
 boolean eventTypeEnabled(int type) 
 Component findUnderMouseInWindow(PointerInfo pi) 
    Assuming that mouse location is stored in PointerInfo passed to this method, it finds a Component that is in the same Window as this Component and is located under the mouse pointer. If no such Component exists, null is returned. NOTE: this method should be called under the protection of tree lock, as it is done in Component.getMousePosition() and Container.getMousePosition(boolean).
 protected  void firePropertyChange(String propertyName,
    Object oldValue,
    Object newValue) 
    Support for reporting bound property changes for Object properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.
 protected  void firePropertyChange(String propertyName,
    boolean oldValue,
    boolean newValue) 
    Support for reporting bound property changes for boolean properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.
 protected  void firePropertyChange(String propertyName,
    int oldValue,
    int newValue) 
    Support for reporting bound property changes for integer properties. This method can be called when a bound property has changed and it will send the appropriate PropertyChangeEvent to any registered PropertyChangeListeners.
 public  void firePropertyChange(String propertyName,
    byte oldValue,
    byte newValue) 
    Reports a bound property change.
 public  void firePropertyChange(String propertyName,
    char oldValue,
    char newValue) 
    Reports a bound property change.
 public  void firePropertyChange(String propertyName,
    short oldValue,
    short newValue) 
    Reports a bound property change.
 public  void firePropertyChange(String propertyName,
    long oldValue,
    long newValue) 
    Reports a bound property change.
 public  void firePropertyChange(String propertyName,
    float oldValue,
    float newValue) 
    Reports a bound property change.
 public  void firePropertyChange(String propertyName,
    double oldValue,
    double newValue) 
    Reports a bound property change.
 final AccessControlContext getAccessControlContext() 
 public AccessibleContext getAccessibleContext() 
    Gets the AccessibleContext associated with this Component. The method implemented by this base class returns null. Classes that extend Component should implement this method to return the AccessibleContext associated with the subclass.
 int getAccessibleIndexInParent() 
    Gets the index of this object in its accessible parent. If this object does not have an accessible parent, returns -1.
 AccessibleStateSet getAccessibleStateSet() 
    Gets the current state set of this object.
 public float getAlignmentX() 
    Returns the alignment along the x axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
 public float getAlignmentY() 
    Returns the alignment along the y axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
 Image getBackBuffer() 
 public Color getBackground() 
    Gets the background color of this component.
 public int getBaseline(int width,
    int height) 
    Returns the baseline. The baseline is measured from the top of the component. This method is primarily meant for LayoutManagers to align components along their baseline. A return value less than 0 indicates this component does not have a reasonable baseline and that LayoutManagers should not align this component on its baseline.

    The default implementation returns -1. Subclasses that support baseline should override appropriately. If a value >= 0 is returned, then the component has a valid baseline for any size >= the minimum size and getBaselineResizeBehavior can be used to determine how the baseline changes with size.

 public BaselineResizeBehavior getBaselineResizeBehavior() 
    Returns an enum indicating how the baseline of the component changes as the size changes. This method is primarily meant for layout managers and GUI builders.

    The default implementation returns BaselineResizeBehavior.OTHER. Subclasses that have a baseline should override appropriately. Subclasses should never return null; if the baseline can not be calculated return BaselineResizeBehavior.OTHER. Callers should first ask for the baseline using getBaseline and if a value >= 0 is returned use this method. It is acceptable for this method to return a value other than BaselineResizeBehavior.OTHER even if getBaseline returns a value less than 0.

 public Rectangle getBounds() 
    Gets the bounds of this component in the form of a Rectangle object. The bounds specify this component's width, height, and location relative to its parent.
 public Rectangle getBounds(Rectangle rv) 
    Stores the bounds of this component into "return value" rv and return rv. If rv is null a new Rectangle is allocated. This version of getBounds is useful if the caller wants to avoid allocating a new Rectangle object on the heap.
 int getBoundsOp() 
    Should only be used in subclass getBounds to check that part of bounds is actualy changing
 BufferStrategy getBufferStrategy() 
 public ColorModel getColorModel() 
    Gets the instance of ColorModel used to display the component on the output device.
 public Component getComponentAt(Point p) 
    Returns the component or subcomponent that contains the specified point.
 public Component getComponentAt(int x,
    int y) 
    Determines if this component or one of its immediate subcomponents contains the (xy) location, and if so, returns the containing component. This method only looks one level deep. If the point (xy) is inside a subcomponent that itself has subcomponents, it does not go looking down the subcomponent tree.

    The locate method of Component simply returns the component itself if the (xy) coordinate location is inside its bounding box, and null otherwise.

 public synchronized ComponentListener[] getComponentListeners() 
    Returns an array of all the component listeners registered on this component.
 public ComponentOrientation getComponentOrientation() 
    Retrieves the language-sensitive orientation that is to be used to order the elements or text within this component. LayoutManager and Component subclasses that wish to respect orientation should call this method to get the component's orientation before performing layout or drawing.
 Container getContainer() 
 Window getContainingWindow() 
    Returns the Window ancestor of the component.
 public Cursor getCursor() 
    Gets the cursor set in the component. If the component does not have a cursor set, the cursor of its parent is returned. If no cursor is set in the entire hierarchy, Cursor.DEFAULT_CURSOR is returned.
 final Cursor getCursor_NoClientCode() 
 public synchronized DropTarget getDropTarget() 
    Gets the DropTarget associated with this Component.
 public Container getFocusCycleRootAncestor() 
    Returns the Container which is the focus cycle root of this Component's focus traversal cycle. Each focus traversal cycle has only a single focus cycle root and each Component which is not a Container belongs to only a single focus traversal cycle. Containers which are focus cycle roots belong to two cycles: one rooted at the Container itself, and one rooted at the Container's nearest focus-cycle-root ancestor. For such Containers, this method will return the Container's nearest focus-cycle- root ancestor.
 public synchronized FocusListener[] getFocusListeners() 
    Returns an array of all the focus listeners registered on this component.
 public Set<AWTKeyStroke> getFocusTraversalKeys(int id) 
    Returns the Set of focus traversal keys for a given traversal operation for this Component. (See setFocusTraversalKeys for a full description of each key.)

    If a Set of traversal keys has not been explicitly defined for this Component, then this Component's parent's Set is returned. If no Set has been explicitly defined for any of this Component's ancestors, then the current KeyboardFocusManager's default Set is returned.

 public boolean getFocusTraversalKeysEnabled() 
    Returns whether focus traversal keys are enabled for this Component. Components for which focus traversal keys are disabled receive key events for focus traversal keys. Components for which focus traversal keys are enabled do not see these events; instead, the events are automatically converted to traversal operations.
 final Set getFocusTraversalKeys_NoIDCheck(int id) 
 public Font getFont() 
    Gets the font of this component.
 public FontMetrics getFontMetrics(Font font) 
    Gets the font metrics for the specified font. Warning: Since Font metrics are affected by the FontRenderContext and this method does not provide one, it can return only metrics for the default render context which may not match that used when rendering on the Component if Graphics2D functionality is being used. Instead metrics can be obtained at rendering time by calling Graphics#getFontMetrics() or text measurement APIs on the Font class.
 final Font getFont_NoClientCode() 
 public Color getForeground() 
    Gets the foreground color of this component.
 public Graphics getGraphics() 
    Creates a graphics context for this component. This method will return null if this component is currently not displayable.
 public GraphicsConfiguration getGraphicsConfiguration() 
    Gets the GraphicsConfiguration associated with this Component. If the Component has not been assigned a specific GraphicsConfiguration, the GraphicsConfiguration of the Component object's top-level container is returned. If the Component has been created, but not yet added to a Container, this method returns null.
 final GraphicsConfiguration getGraphicsConfiguration_NoClientCode() 
 final Graphics getGraphics_NoClientCode() 
 final ComponentPeer getHWPeerAboveMe() 
 public int getHeight() 
    Returns the current height of this component. This method is preferable to writing component.getBounds().height, or component.getSize().height because it doesn't cause any heap allocations.
 public synchronized HierarchyBoundsListener[] getHierarchyBoundsListeners() 
    Returns an array of all the hierarchy bounds listeners registered on this component.
 public synchronized HierarchyListener[] getHierarchyListeners() 
    Returns an array of all the hierarchy listeners registered on this component.
 public boolean getIgnoreRepaint() 
 public InputContext getInputContext() 
    Gets the input context used by this component for handling the communication with input methods when text is entered in this component. By default, the input context used for the parent component is returned. Components may override this to return a private input context.
 public synchronized InputMethodListener[] getInputMethodListeners() 
    Returns an array of all the input method listeners registered on this component.
 public InputMethodRequests getInputMethodRequests() 
    Gets the input method request handler which supports requests from input methods for this component. A component that supports on-the-spot text input must override this method to return an InputMethodRequests instance. At the same time, it also has to handle input method events.
 public synchronized KeyListener[] getKeyListeners() 
    Returns an array of all the key listeners registered on this component.
 public T[] getListeners(Class<T> listenerType) 
    Returns an array of all the objects currently registered as FooListeners upon this Component. FooListeners are registered using the addFooListener method.

    You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a Component c for its mouse listeners with the following code:

    MouseListener[] mls = (MouseListener[])(c.getListeners(MouseListener.class));
    If no such listeners exist, this method returns an empty array.
 public Locale getLocale() 
    Gets the locale of this component.
 public Point getLocation() 
    Gets the location of this component in the form of a point specifying the component's top-left corner. The location will be relative to the parent's coordinate space.

    Due to the asynchronous nature of native event handling, this method can return outdated values (for instance, after several calls of setLocation() in rapid succession). For this reason, the recommended method of obtaining a component's position is within java.awt.event.ComponentListener.componentMoved(), which is called after the operating system has finished moving the component.

 public Point getLocation(Point rv) 
    Stores the x,y origin of this component into "return value" rv and return rv. If rv is null a new Point is allocated. This version of getLocation is useful if the caller wants to avoid allocating a new Point object on the heap.
 public Point getLocationOnScreen() 
    Gets the location of this component in the form of a point specifying the component's top-left corner in the screen's coordinate space.
 final Point getLocationOnScreen_NoTreeLock() 
 Point getLocationOnWindow() 
 public Dimension getMaximumSize() 
    Gets the maximum size of this component.
 public Dimension getMinimumSize() 
    Gets the mininimum size of this component.
 public synchronized MouseListener[] getMouseListeners() 
    Returns an array of all the mouse listeners registered on this component.
 public synchronized MouseMotionListener[] getMouseMotionListeners() 
    Returns an array of all the mouse motion listeners registered on this component.
 public Point getMousePosition() throws HeadlessException 
    Returns the position of the mouse pointer in this Component's coordinate space if the Component is directly under the mouse pointer, otherwise returns null. If the Component is not showing on the screen, this method returns null even if the mouse pointer is above the area where the Component would be displayed. If the Component is partially or fully obscured by other Components or native windows, this method returns a non-null value only if the mouse pointer is located above the unobscured part of the Component.

    For Containers it returns a non-null value if the mouse is above the Container itself or above any of its descendants. Use Container#getMousePosition(boolean) if you need to exclude children.

    Sometimes the exact mouse coordinates are not important, and the only thing that matters is whether a specific Component is under the mouse pointer. If the return value of this method is null, mouse pointer is not directly above the Component.

 public synchronized MouseWheelListener[] getMouseWheelListeners() 
    Returns an array of all the mouse wheel listeners registered on this component.
 public String getName() 
    Gets the name of the component.
 Container getNativeContainer() 
 final Component getNextFocusCandidate() 
 final Region getNormalShape() 
    Returns the full shape of the component located in window coordinates
 Object getObjectLock() 
 Region getOpaqueShape() 
    Returns the "opaque shape" of the component. The opaque shape of a lightweight components is the actual shape that needs to be cut off of the heavyweight components in order to mix this lightweight component correctly with them. The method is overriden in the java.awt.Container to handle non-opaque containers containing opaque children. See 6637655 for details.
 public Container getParent() 
    Gets the parent of this component.
 final Container getParent_NoClientCode() 
 public ComponentPeer getPeer() 
Deprecated! As - of JDK version 1.1, programs should not directly manipulate peers; replaced by boolean isDisplayable().

 public Dimension getPreferredSize() 
    Gets the preferred size of this component.
 public PropertyChangeListener[] getPropertyChangeListeners() 
    Returns an array of all the property change listeners registered on this component.
 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 
    Returns an array of all the listeners which have been associated with the named property.
 final int getSiblingIndexAbove() 
 final int getSiblingIndexBelow() 
 public Dimension getSize() 
    Returns the size of this component in the form of a Dimension object. The height field of the Dimension object contains this component's height, and the width field of the Dimension object contains this component's width.
 public Dimension getSize(Dimension rv) 
    Stores the width/height of this component into "return value" rv and return rv. If rv is null a new Dimension object is allocated. This version of getSize is useful if the caller wants to avoid allocating a new Dimension object on the heap.
 public Toolkit getToolkit() 
    Gets the toolkit of this component. Note that the frame that contains a component controls which toolkit is used by that component. Therefore if the component is moved from one frame to another, the toolkit it uses may change.
 final Toolkit getToolkitImpl() 
 Container getTraversalRoot() 
 public final Object getTreeLock() 
    Gets this component's locking object (the object that owns the thread synchronization monitor) for AWT component-tree and layout operations.
 public int getWidth() 
    Returns the current width of this component. This method is preferable to writing component.getBounds().width, or component.getSize().width because it doesn't cause any heap allocations.
 public int getX() 
    Returns the current x coordinate of the components origin. This method is preferable to writing component.getBounds().x, or component.getLocation().x because it doesn't cause any heap allocations.
 public int getY() 
    Returns the current y coordinate of the components origin. This method is preferable to writing component.getBounds().y, or component.getLocation().y because it doesn't cause any heap allocations.
 public boolean gotFocus(Event evt,
    Object what) 
Deprecated! As - of JDK version 1.1, replaced by processFocusEvent(FocusEvent).

 public boolean handleEvent(Event evt) 
Deprecated! As - of JDK version 1.1 replaced by processEvent(AWTEvent).

 public boolean hasFocus() 
    Returns true if this Component is the focus owner. This method is obsolete, and has been replaced by isFocusOwner().
 public  void hide() 
Deprecated! As - of JDK version 1.1, replaced by setVisible(boolean).

 public boolean imageUpdate(Image img,
    int infoflags,
    int x,
    int y,
    int w,
    int h) 
    Repaints the component when the image has changed. This imageUpdate method of an ImageObserver is called when more information about an image which had been previously requested using an asynchronous routine such as the drawImage method of Graphics becomes available. See the definition of imageUpdate for more information on this method and its arguments.

    The imageUpdate method of Component incrementally draws an image on the component as more of the bits of the image are available.

    If the system property awt.image.incrementaldraw is missing or has the value true, the image is incrementally drawn. If the system property has any other value, then the image is not drawn until it has been completely loaded.

    Also, if incremental drawing is in effect, the value of the system property awt.image.redrawrate is interpreted as an integer to give the maximum redraw rate, in milliseconds. If the system property is missing or cannot be interpreted as an integer, the redraw rate is once every 100ms.

    The interpretation of the x, y, width, and height arguments depends on the value of the infoflags argument.

  void initializeFocusTraversalKeys() 
 public boolean inside(int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by contains(int, int).

 public  void invalidate() 
    Invalidates this component and its ancestors.

    By default, all the ancestors of the component up to the top-most container of the hierarchy are marked invalid. If the {@code java.awt.smartInvalidate} system property is set to {@code true}, invalidation stops on the nearest validate root of this component. Marking a container invalid indicates that the container needs to be laid out.

    This method is called automatically when any layout-related information changes (e.g. setting the bounds of the component, or adding the component to a container).

    This method might be called often, so it should work fast.

 final  void invalidateIfValid() 
    Invalidates the component unless it is already invalid.
  void invalidateParent() 
    Invalidates the parent of this component if any. This method MUST BE invoked under the TreeLock.
 boolean isAutoFocusTransferOnDisposal() 
 public boolean isBackgroundSet() 
    Returns whether the background color has been explicitly set for this Component. If this method returns false, this Component is inheriting its background color from an ancestor.
 final boolean isCoalescingEnabled() 
    Indicates whether coalesceEvents may do something.
 public boolean isCursorSet() 
    Returns whether the cursor has been explicitly set for this Component. If this method returns false, this Component is inheriting its cursor from an ancestor.
 public boolean isDisplayable() 
    Determines whether this component is displayable. A component is displayable when it is connected to a native screen resource.

    A component is made displayable either when it is added to a displayable containment hierarchy or when its containment hierarchy is made displayable. A containment hierarchy is made displayable when its ancestor window is either packed or made visible.

    A component is made undisplayable either when it is removed from a displayable containment hierarchy or when its containment hierarchy is made undisplayable. A containment hierarchy is made undisplayable when its ancestor window is disposed.

 public boolean isDoubleBuffered() 
    Returns true if this component is painted to an offscreen image ("buffer") that's copied to the screen later. Component subclasses that support double buffering should override this method to return true if double buffering is enabled.
 public boolean isEnabled() 
    Determines whether this component is enabled. An enabled component can respond to user input and generate events. Components are enabled initially by default. A component may be enabled or disabled by calling its setEnabled method.
 final boolean isEnabledImpl() 
 public boolean isFocusCycleRoot(Container container) 
    Returns whether the specified Container is the focus cycle root of this Component's focus traversal cycle. Each focus traversal cycle has only a single focus cycle root and each Component which is not a Container belongs to only a single focus traversal cycle.
 public boolean isFocusOwner() 
    Returns true if this Component is the focus owner.
 public boolean isFocusTraversable() 
Deprecated! As - of 1.4, replaced by isFocusable().

    Returns whether this Component can become the focus owner.
 final boolean isFocusTraversableOverridden() 
 public boolean isFocusable() 
    Returns whether this Component can be focused.
 public boolean isFontSet() 
    Returns whether the font has been explicitly set for this Component. If this method returns false, this Component is inheriting its font from an ancestor.
 public boolean isForegroundSet() 
    Returns whether the foreground color has been explicitly set for this Component. If this method returns false, this Component is inheriting its foreground color from an ancestor.
 static boolean isInstanceOf(Object obj,
    String className) 
    Checks that the given object is instance of the given class.
 public boolean isLightweight() 
    A lightweight component doesn't have a native toolkit peer. Subclasses of Component and Container, other than the ones defined in this package like Button or Scrollbar, are lightweight. All of the Swing components are lightweights.

    This method will always return false if this component is not displayable because it is impossible to determine the weight of an undisplayable component.

 public boolean isMaximumSizeSet() 
    Returns true if the maximum size has been set to a non-null value otherwise returns false.
 public boolean isMinimumSizeSet() 
    Returns whether or not setMinimumSize has been invoked with a non-null value.
 final boolean isMixingNeeded() 
 final boolean isNonOpaqueForMixing() 
 public boolean isOpaque() 
    Returns true if this component is completely opaque, returns false by default.

    An opaque component paints every pixel within its rectangular region. A non-opaque component paints only some of its pixels, allowing the pixels underneath it to "show through". A component that does not fully paint its pixels therefore provides a degree of transparency.

    Subclasses that guarantee to always completely paint their contents should override this method and return true.

 public boolean isPreferredSizeSet() 
    Returns true if the preferred size has been set to a non-null value otherwise returns false.
 boolean isRecursivelyVisible() 
    Determines whether this component will be displayed on the screen.
 boolean isSameOrAncestorOf(Component comp,
    boolean allowChildren) 
    Overridden in Container. Must be called under TreeLock.
 public boolean isShowing() 
    Determines whether this component is showing on screen. This means that the component must be visible, and it must be in a container that is visible and showing.

    Note: sometimes there is no way to detect whether the {@code Component} is actually visible to the user. This can happen when:

    • the component has been added to a visible {@code ScrollPane} but the {@code Component} is not currently in the scroll pane's view port.
    • the {@code Component} is obscured by another {@code Component} or {@code Container}.
 public boolean isValid() 
    Determines whether this component is valid. A component is valid when it is correctly sized and positioned within its parent container and all its children are also valid. In order to account for peers' size requirements, components are invalidated before they are first shown on the screen. By the time the parent container is fully realized, all its components will be valid.
 public boolean isVisible() 
    Determines whether this component should be visible when its parent is visible. Components are initially visible, with the exception of top level components such as Frame objects.
 final boolean isVisible_NoClientCode() 
 public boolean keyDown(Event evt,
    int key) 
Deprecated! As - of JDK version 1.1, replaced by processKeyEvent(KeyEvent).

 public boolean keyUp(Event evt,
    int key) 
Deprecated! As - of JDK version 1.1, replaced by processKeyEvent(KeyEvent).

 public  void layout() 
Deprecated! As - of JDK version 1.1, replaced by doLayout().

  void lightweightPaint(Graphics g) 
    Simulates the peer callbacks into java.awt for painting of lightweight Components.
  void lightweightPrint(Graphics g) 
    Simulates the peer callbacks into java.awt for printing of lightweight Components.
 public  void list() 
    Prints a listing of this component to the standard system output stream System.out.
 public  void list(PrintStream out) 
    Prints a listing of this component to the specified output stream.
 public  void list(PrintWriter out) 
    Prints a listing to the specified print writer.
 public  void list(PrintStream out,
    int indent) 
    Prints out a list, starting at the specified indentation, to the specified print stream.
 public  void list(PrintWriter out,
    int indent) 
    Prints out a list, starting at the specified indentation, to the specified print writer.
 public Component locate(int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by getComponentAt(int, int).

 public Point location() 
Deprecated! As - of JDK version 1.1, replaced by getLocation().

 public boolean lostFocus(Event evt,
    Object what) 
Deprecated! As - of JDK version 1.1, replaced by processFocusEvent(FocusEvent).

 public Dimension minimumSize() 
Deprecated! As - of JDK version 1.1, replaced by getMinimumSize().

  void mixOnHiding(boolean isLightweight) 
  void mixOnReshaping() 
  void mixOnShowing() 
  void mixOnValidating() 
  void mixOnZOrderChanging(int oldZorder,
    int newZorder) 
 public boolean mouseDown(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

 public boolean mouseDrag(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).

 public boolean mouseEnter(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

 public boolean mouseExit(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

 public boolean mouseMove(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).

 public boolean mouseUp(Event evt,
    int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

 public  void move(int x,
    int y) 
Deprecated! As - of JDK version 1.1, replaced by setLocation(int, int).

 public  void nextFocus() 
Deprecated! As - of JDK version 1.1, replaced by transferFocus().

 int numListening(long mask) 
 public  void paint(Graphics g) 
    Paints this component.

    This method is called when the contents of the component should be painted; such as when the component is first being shown or is damaged and in need of repair. The clip rectangle in the Graphics parameter is set to the area which needs to be painted. Subclasses of Component that override this method need not call super.paint(g).

    For performance reasons, Components with zero width or height aren't considered to need painting when they are first shown, and also aren't considered to need repair.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 public  void paintAll(Graphics g) 
    Paints this component and all of its subcomponents.

    The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

  void paintHeavyweightComponents(Graphics g) 
    Paints all the heavyweight subcomponents.
 protected String paramString() 
    Returns a string representing the state of this component. 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.
 Point pointRelativeToComponent(Point absolute) 
    Translates absolute coordinates into coordinates in the coordinate space of this component.
 public boolean postEvent(Event e) 
Deprecated! As - of JDK version 1.1, replaced by dispatchEvent(AWTEvent).

 boolean postsOldMouseEvents() 
 public Dimension preferredSize() 
Deprecated! As - of JDK version 1.1, replaced by getPreferredSize().

 public boolean prepareImage(Image image,
    ImageObserver observer) 
    Prepares an image for rendering on this component. The image data is downloaded asynchronously in another thread and the appropriate screen representation of the image is generated.
 public boolean prepareImage(Image image,
    int width,
    int height,
    ImageObserver observer) 
    Prepares an image for rendering on this component at the specified width and height.

    The image data is downloaded asynchronously in another thread, and an appropriately scaled screen representation of the image is generated.

 public  void print(Graphics g) 
    Prints this component. Applications should override this method for components that must do special processing before being printed or should be printed differently than they are painted.

    The default implementation of this method calls the paint method.

    The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

 public  void printAll(Graphics g) 
    Prints this component and all of its subcomponents.

    The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

  void printHeavyweightComponents(Graphics g) 
    Prints all the heavyweight subcomponents.
 protected  void processComponentEvent(ComponentEvent e) 
    Processes component events occurring on this component by dispatching them to any registered ComponentListener objects.

    This method is not called unless component events are enabled for this component. Component events are enabled when one of the following occurs:

    • A ComponentListener object is registered via addComponentListener.
    • Component events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processEvent(AWTEvent e) 
    Processes events occurring on this component. By default this method calls the appropriate process<event type>Event method for the given class of event.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processFocusEvent(FocusEvent e) 
    Processes focus events occurring on this component by dispatching them to any registered FocusListener objects.

    This method is not called unless focus events are enabled for this component. Focus events are enabled when one of the following occurs:

    • A FocusListener object is registered via addFocusListener.
    • Focus events are enabled via enableEvents.

    If focus events are enabled for a Component, the current KeyboardFocusManager determines whether or not a focus event should be dispatched to registered FocusListener objects. If the events are to be dispatched, the KeyboardFocusManager calls the Component's dispatchEvent method, which results in a call to the Component's processFocusEvent method.

    If focus events are enabled for a Component, calling the Component's dispatchEvent method with a FocusEvent as the argument will result in a call to the Component's processFocusEvent method regardless of the current KeyboardFocusManager.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processHierarchyBoundsEvent(HierarchyEvent e) 
    Processes hierarchy bounds events occurring on this component by dispatching them to any registered HierarchyBoundsListener objects.

    This method is not called unless hierarchy bounds events are enabled for this component. Hierarchy bounds events are enabled when one of the following occurs:

    • An HierarchyBoundsListener object is registered via addHierarchyBoundsListener.
    • Hierarchy bounds events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processHierarchyEvent(HierarchyEvent e) 
    Processes hierarchy events occurring on this component by dispatching them to any registered HierarchyListener objects.

    This method is not called unless hierarchy events are enabled for this component. Hierarchy events are enabled when one of the following occurs:

    • An HierarchyListener object is registered via addHierarchyListener.
    • Hierarchy events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processInputMethodEvent(InputMethodEvent e) 
    Processes input method events occurring on this component by dispatching them to any registered InputMethodListener objects.

    This method is not called unless input method events are enabled for this component. Input method events are enabled when one of the following occurs:

    • An InputMethodListener object is registered via addInputMethodListener.
    • Input method events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processKeyEvent(KeyEvent e) 
    Processes key events occurring on this component by dispatching them to any registered KeyListener objects.

    This method is not called unless key events are enabled for this component. Key events are enabled when one of the following occurs:

    • A KeyListener object is registered via addKeyListener.
    • Key events are enabled via enableEvents.

    If key events are enabled for a Component, the current KeyboardFocusManager determines whether or not a key event should be dispatched to registered KeyListener objects. The DefaultKeyboardFocusManager will not dispatch key events to a Component that is not the focus owner or is not showing.

    As of J2SE 1.4, KeyEvents are redirected to the focus owner. Please see the Focus Specification for further information.

    Calling a Component's dispatchEvent method with a KeyEvent as the argument will result in a call to the Component's processKeyEvent method regardless of the current KeyboardFocusManager as long as the component is showing, focused, and enabled, and key events are enabled on it.

    If the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processMouseEvent(MouseEvent e) 
    Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.

    This method is not called unless mouse events are enabled for this component. Mouse events are enabled when one of the following occurs:

    • A MouseListener object is registered via addMouseListener.
    • Mouse events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processMouseMotionEvent(MouseEvent e) 
    Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects.

    This method is not called unless mouse motion events are enabled for this component. Mouse motion events are enabled when one of the following occurs:

    • A MouseMotionListener object is registered via addMouseMotionListener.
    • Mouse motion events are enabled via enableEvents.

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 protected  void processMouseWheelEvent(MouseWheelEvent e) 
    Processes mouse wheel events occurring on this component by dispatching them to any registered MouseWheelListener objects.

    This method is not called unless mouse wheel events are enabled for this component. Mouse wheel events are enabled when one of the following occurs:

    • A MouseWheelListener object is registered via addMouseWheelListener.
    • Mouse wheel events are enabled via enableEvents.

    For information on how mouse wheel events are dispatched, see the class description for MouseWheelEvent .

    Note that if the event parameter is null the behavior is unspecified and may result in an exception.

 final  void relocateComponent() 
    Fix the location of the HW component in a LW container hierarchy.
 public  void remove(MenuComponent popup) 
    Removes the specified popup menu from the component.
 public synchronized  void removeComponentListener(ComponentListener l) 
    Removes the specified component listener so that it no longer receives component events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeFocusListener(FocusListener l) 
    Removes the specified focus listener so that it no longer receives focus events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void removeHierarchyBoundsListener(HierarchyBoundsListener l) 
    Removes the specified hierarchy bounds listener so that it no longer receives hierarchy bounds events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void removeHierarchyListener(HierarchyListener l) 
    Removes the specified hierarchy listener so that it no longer receives hierarchy changed events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeInputMethodListener(InputMethodListener l) 
    Removes the specified input method listener so that it no longer receives input method events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeKeyListener(KeyListener l) 
    Removes the specified key listener so that it no longer receives key events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeMouseListener(MouseListener l) 
    Removes the specified mouse listener so that it no longer receives mouse events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeMouseMotionListener(MouseMotionListener l) 
    Removes the specified mouse motion listener so that it no longer receives mouse motion events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If listener l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public synchronized  void removeMouseWheelListener(MouseWheelListener l) 
    Removes the specified mouse wheel listener so that it no longer receives mouse wheel events from this component. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this component. If l is null, no exception is thrown and no action is performed.

    Refer to AWT Threading Issues for details on AWT's threading model.

 public  void removeNotify() 
    Makes this Component undisplayable by destroying it native screen resource.

    This method is called by the toolkit internally and should not be called directly by programs. Code overriding this method should call super.removeNotify as the first line of the overriding method.

 public  void removePropertyChangeListener(PropertyChangeListener listener) 
    Removes a PropertyChangeListener from the listener list. This method should be used to remove PropertyChangeListeners that were registered for all bound properties of this class.

    If listener is null, no exception is thrown and no action is performed.

 public  void removePropertyChangeListener(String propertyName,
    PropertyChangeListener listener) 
    Removes a PropertyChangeListener from the listener list for a specific property. This method should be used to remove PropertyChangeListeners that were registered for a specific bound property.

    If propertyName or listener is null, no exception is thrown and no action is taken.

 public  void repaint() 
    Repaints this component.

    If this component is a lightweight component, this method causes a call to this component's paint method as soon as possible. Otherwise, this method causes a call to this component's update method as soon as possible.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 public  void repaint(long tm) 
    Repaints the component. If this component is a lightweight component, this results in a call to paint within tm milliseconds.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 public  void repaint(int x,
    int y,
    int width,
    int height) 
    Repaints the specified rectangle of this component.

    If this component is a lightweight component, this method causes a call to this component's paint method as soon as possible. Otherwise, this method causes a call to this component's update method as soon as possible.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 public  void repaint(long tm,
    int x,
    int y,
    int width,
    int height) 
    Repaints the specified rectangle of this component within tm milliseconds.

    If this component is a lightweight component, this method causes a call to this component's paint method. Otherwise, this method causes a call to this component's update method.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 public  void requestFocus() 
    Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. This component must be displayable, focusable, visible and all of its ancestors (with the exception of the top-level Window) must be visible for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event. If this request is denied because this Component's top-level Window cannot become the focused Window, the request will be remembered and will be granted when the Window is later focused by the user.

    This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.

    Because the focus behavior of this method is platform-dependent, developers are strongly encouraged to use requestFocusInWindow when possible.

    Note: Not all focus transfers result from invoking this method. As such, a component may receive focus without this or any of the other {@code requestFocus} methods of {@code Component} being invoked.

 boolean requestFocus(Cause cause) 
 protected boolean requestFocus(boolean temporary) 
    Requests that this Component get the input focus, and that this Component's top-level ancestor become the focused Window. This component must be displayable, focusable, visible and all of its ancestors (with the exception of the top-level Window) must be visible for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event. If this request is denied because this component's top-level window cannot become the focused window, the request will be remembered and will be granted when the window is later focused by the user.

    This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

    This method cannot be used to set the focus owner to no component at all. Use KeyboardFocusManager.clearGlobalFocusOwner instead.

    Because the focus behavior of this method is platform-dependent, developers are strongly encouraged to use requestFocusInWindow when possible.

    Every effort will be made to ensure that FocusEvents generated as a result of this request will have the specified temporary value. However, because specifying an arbitrary temporary state may not be implementable on all native windowing systems, correct behavior for this method can be guaranteed only for lightweight Components. This method is not intended for general use, but exists instead as a hook for lightweight component libraries, such as Swing.

    Note: Not all focus transfers result from invoking this method. As such, a component may receive focus without this or any of the other {@code requestFocus} methods of {@code Component} being invoked.

 boolean requestFocus(boolean temporary,
    Cause cause) 
 final boolean requestFocusHelper(boolean temporary,
    boolean focusedWindowChangeAllowed) 
 final boolean requestFocusHelper(boolean temporary,
    boolean focusedWindowChangeAllowed,
    Cause cause) 
 public boolean requestFocusInWindow() 
    Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. This component must be displayable, focusable, visible and all of its ancestors (with the exception of the top-level Window) must be visible for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event.

    This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the Component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this Component is the focus owner until this Component receives a FOCUS_GAINED event.

    This method cannot be used to set the focus owner to no Component at all. Use KeyboardFocusManager.clearGlobalFocusOwner() instead.

    The focus behavior of this method can be implemented uniformly across platforms, and thus developers are strongly encouraged to use this method over requestFocus when possible. Code which relies on requestFocus may exhibit different focus behavior on different platforms.

    Note: Not all focus transfers result from invoking this method. As such, a component may receive focus without this or any of the other {@code requestFocus} methods of {@code Component} being invoked.

 boolean requestFocusInWindow(Cause cause) 
 protected boolean requestFocusInWindow(boolean temporary) 
    Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window. This component must be displayable, focusable, visible and all of its ancestors (with the exception of the top-level Window) must be visible for the request to be granted. Every effort will be made to honor the request; however, in some cases it may be impossible to do so. Developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

    This method returns a boolean value. If false is returned, the request is guaranteed to fail. If true is returned, the request will succeed unless it is vetoed, or an extraordinary event, such as disposal of the component's peer, occurs before the request can be granted by the native windowing system. Again, while a return value of true indicates that the request is likely to succeed, developers must never assume that this component is the focus owner until this component receives a FOCUS_GAINED event.

    This method cannot be used to set the focus owner to no component at all. Use KeyboardFocusManager.clearGlobalFocusOwner instead.

    The focus behavior of this method can be implemented uniformly across platforms, and thus developers are strongly encouraged to use this method over requestFocus when possible. Code which relies on requestFocus may exhibit different focus behavior on different platforms.

    Every effort will be made to ensure that FocusEvents generated as a result of this request will have the specified temporary value. However, because specifying an arbitrary temporary state may not be implementable on all native windowing systems, correct behavior for this method can be guaranteed only for lightweight components. This method is not intended for general use, but exists instead as a hook for lightweight component libraries, such as Swing.

    Note: Not all focus transfers result from invoking this method. As such, a component may receive focus without this or any of the other {@code requestFocus} methods of {@code Component} being invoked.

 boolean requestFocusInWindow(boolean temporary,
    Cause cause) 
 public  void reshape(int x,
    int y,
    int width,
    int height) 
Deprecated! As - of JDK version 1.1, replaced by setBounds(int, int, int, int).

 public  void resize(Dimension d) 
Deprecated! As - of JDK version 1.1, replaced by setSize(Dimension).

 public  void resize(int width,
    int height) 
Deprecated! As - of JDK version 1.1, replaced by setSize(int, int).

 public  void revalidate() 
    Revalidates the component hierarchy up to the nearest validate root.

    This method first invalidates the component hierarchy starting from this component up to the nearest validate root. Afterwards, the component hierarchy is validated starting from the nearest validate root.

    This is a convenience method supposed to help application developers avoid looking for validate roots manually. Basically, it's equivalent to first calling the #invalidate() method on this component, and then calling the #validate() method on the nearest validate root.

  void setAutoFocusTransferOnDisposal(boolean value) 
 public  void setBackground(Color c) 
    Sets the background color of this component.

    The background color affects each component differently and the parts of the component that are affected by the background color may differ between operating systems.

 public  void setBounds(Rectangle r) 
    Moves and resizes this component to conform to the new bounding rectangle r. This component's new position is specified by r.x and r.y, and its new size is specified by r.width and r.height

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setBounds(int x,
    int y,
    int width,
    int height) 
    Moves and resizes this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

  void setBoundsOp(int op) 
 public  void setComponentOrientation(ComponentOrientation o) 
    Sets the language-sensitive orientation that is to be used to order the elements or text within this component. Language-sensitive LayoutManager and Component subclasses will use this property to determine how to lay out and draw components.

    At construction time, a component's orientation is set to ComponentOrientation.UNKNOWN, indicating that it has not been specified explicitly. The UNKNOWN orientation behaves the same as ComponentOrientation.LEFT_TO_RIGHT.

    To set the orientation of a single component, use this method. To set the orientation of an entire component hierarchy, use applyComponentOrientation .

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setCursor(Cursor cursor) 
    Sets the cursor image to the specified cursor. This cursor image is displayed when the contains method for this component returns true for the current cursor location, and this Component is visible, displayable, and enabled. Setting the cursor of a Container causes that cursor to be displayed within all of the container's subcomponents, except for those that have a non-null cursor.

    The method may have no visual effect if the Java platform implementation and/or the native system do not support changing the mouse cursor shape.

 public synchronized  void setDropTarget(DropTarget dt) 
    Associate a DropTarget with this component. The Component will receive drops only if it is enabled.
 public  void setEnabled(boolean b) 
    Enables or disables this component, depending on the value of the parameter b. An enabled component can respond to user input and generate events. Components are enabled initially by default.

    Note: Disabling a lightweight component does not prevent it from receiving MouseEvents.

    Note: Disabling a heavyweight container prevents all components in this container from receiving any input events. But disabling a lightweight container affects only this container.

 public  void setFocusTraversalKeys(int id,
    Set<AWTKeyStroke> keystrokes) 
    Sets the focus traversal keys for a given traversal operation for this Component.

    The default values for a Component's focus traversal keys are implementation-dependent. Sun recommends that all implementations for a particular native platform use the same default values. The recommendations for Windows and Unix are listed below. These recommendations are used in the Sun AWT implementations.
    Identifier Meaning Default
    KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS Normal forward keyboard traversal TAB on KEY_PRESSED, CTRL-TAB on KEY_PRESSED
    KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS Normal reverse keyboard traversal SHIFT-TAB on KEY_PRESSED, CTRL-SHIFT-TAB on KEY_PRESSED
    KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS Go up one focus traversal cycle none
    To disable a traversal key, use an empty Set; Collections.EMPTY_SET is recommended.

    Using the AWTKeyStroke API, client code can specify on which of two specific KeyEvents, KEY_PRESSED or KEY_RELEASED, the focus traversal operation will occur. Regardless of which KeyEvent is specified, however, all KeyEvents related to the focus traversal key, including the associated KEY_TYPED event, will be consumed, and will not be dispatched to any Component. It is a runtime error to specify a KEY_TYPED event as mapping to a focus traversal operation, or to map the same event to multiple default focus traversal operations.

    If a value of null is specified for the Set, this Component inherits the Set from its parent. If all ancestors of this Component have null specified for the Set, then the current KeyboardFocusManager's default Set is used.

 public  void setFocusTraversalKeysEnabled(boolean focusTraversalKeysEnabled) 
    Sets whether focus traversal keys are enabled for this Component. Components for which focus traversal keys are disabled receive key events for focus traversal keys. Components for which focus traversal keys are enabled do not see these events; instead, the events are automatically converted to traversal operations.
 final  void setFocusTraversalKeys_NoIDCheck(int id,
    Set<AWTKeyStroke> keystrokes) 
 public  void setFocusable(boolean focusable) 
    Sets the focusable state of this Component to the specified value. This value overrides the Component's default focusability.
 public  void setFont(Font f) 
    Sets the font of this component.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setForeground(Color c) 
    Sets the foreground color of this component.
  void setGraphicsConfiguration(GraphicsConfiguration gc) 
 public  void setIgnoreRepaint(boolean ignoreRepaint) 
    Sets whether or not paint messages received from the operating system should be ignored. This does not affect paint events generated in software by the AWT, unless they are an immediate response to an OS-level paint message.

    This is useful, for example, if running under full-screen mode and better performance is desired, or if page-flipping is used as the buffer strategy.

 public  void setLocale(Locale l) 
    Sets the locale of this component. This is a bound property.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setLocation(Point p) 
    Moves this component to a new location. The top-left corner of the new location is specified by point p. Point p is given in the parent's coordinate space.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setLocation(int x,
    int y) 
    Moves this component to a new location. The top-left corner of the new location is specified by the x and y parameters in the coordinate space of this component's parent.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setMaximumSize(Dimension maximumSize) 
    Sets the maximum size of this component to a constant value. Subsequent calls to getMaximumSize will always return this value. Setting the maximum size to null restores the default behavior.
 public  void setMinimumSize(Dimension minimumSize) 
    Sets the minimum size of this component to a constant value. Subsequent calls to getMinimumSize will always return this value. Setting the minimum size to null restores the default behavior.
 public  void setName(String name) 
    Sets the name of the component to the specified string.
 public  void setPreferredSize(Dimension preferredSize) 
    Sets the preferred size of this component to a constant value. Subsequent calls to getPreferredSize will always return this value. Setting the preferred size to null restores the default behavior.
 static synchronized  void setRequestFocusController(RequestFocusController requestController) 
 public  void setSize(Dimension d) 
    Resizes this component so that it has width d.width and height d.height.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setSize(int width,
    int height) 
    Resizes this component so that it has width width and height height.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void setVisible(boolean b) 
    Shows or hides this component depending on the value of parameter b.

    This method changes layout-related information, and therefore, invalidates the component hierarchy.

 public  void show() 
Deprecated! As - of JDK version 1.1, replaced by setVisible(boolean).

 public  void show(boolean b) 
Deprecated! As - of JDK version 1.1, replaced by setVisible(boolean).

 public Dimension size() 
Deprecated! As - of JDK version 1.1, replaced by getSize().

 final  void subtractAndApplyShape(Region s) 
 final  void subtractAndApplyShapeBelowMe() 
 public String toString() 
    Returns a string representation of this component and its values.
 public  void transferFocus() 
    Transfers the focus to the next component, as though this Component were the focus owner.
 boolean transferFocus(boolean clearOnFailure) 
 public  void transferFocusBackward() 
    Transfers the focus to the previous component, as though this Component were the focus owner.
 boolean transferFocusBackward(boolean clearOnFailure) 
 public  void transferFocusUpCycle() 
    Transfers the focus up one focus traversal cycle. Typically, the focus owner is set to this Component's focus cycle root, and the current focus cycle root is set to the new focus owner's focus cycle root. If, however, this Component's focus cycle root is a Window, then the focus owner is set to the focus cycle root's default Component to focus, and the current focus cycle root is unchanged.
 public  void update(Graphics g) 
    Updates this component.

    If this component is not a lightweight component, the AWT calls the update method in response to a call to repaint. You can assume that the background is not cleared.

    The update method of Component calls this component's paint method to redraw this component. This method is commonly overridden by subclasses which need to do additional work in response to a call to repaint. Subclasses of Component that override this method should either call super.update(g), or call paint(g) directly from their update method.

    The origin of the graphics context, its (00) coordinate point, is the top-left corner of this component. The clipping region of the graphics context is the bounding rectangle of this component.

    Note: For more information on the paint mechanisms utilitized by AWT and Swing, including information on how to write the most efficient painting code, see Painting in AWT and Swing.

 final  void updateCursorImmediately() 
    Updates the cursor. May not be invoked from the native message pump.
 boolean updateGraphicsData(GraphicsConfiguration gc) 
  void updateZOrder() 
 public  void validate() 
    Validates this component.

    The meaning of the term validating is defined by the ancestors of this class. See Container#validate for more details.