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Class java.awt.Component

java.lang.Object
   |
   +----java.awt.Component

public class Component

extends Object

implements ImageObserver, MenuContainer, Serializable

BOTTOM_ALIGNMENT

Ease of use constant for getAlignmentY().

CENTER_ALIGNMENT

Ease of use constant for getAlignmentY() and getAlignmentX().

LEFT_ALIGNMENT

Ease of use constant for getAlignmentX().

locale

The locale for the component.

RIGHT_ALIGNMENT

Ease of use constant for getAlignmentX().

TOP_ALIGNMENT

Ease of use constant for getAlignmentY().

Component()

Constructs a new Component.

action(Event, Object)

Deprecated.

add(PopupMenu)

Adds the specified popup menu to the component.

addComponentListener(ComponentListener)

Adds the specified component listener to receive component events from this component.

addFocusListener(FocusListener)

Adds the specified focus listener to receive focus events from this component.

addKeyListener(KeyListener)

Adds the specified key listener to receive key events from this component.

addMouseListener(MouseListener)

Adds the specified mouse listener to receive mouse events from this component.

addMouseMotionListener(MouseMotionListener)

Adds the specified mouse motion listener to receive mouse motion events from this component.

addNotify()

Notifies the Component that it has been added to a container and if a peer is required, it should be created.

bounds()

Deprecated.

checkImage(Image, ImageObserver)

Returns the status of the construction of a screen representation of the specified image.

checkImage(Image, int, int, ImageObserver)

Returns the status of the construction of a scaled screen representation of the specified image.

contains(int, int)

Checks whether this component "contains" the specified (x, y) location, where x and y are defined to be relative to the coordinate system of this component.

contains(Point)

Checks whether this component "contains" the specified point, where x and y in the point are defined to be relative to the coordinate system of this component.

createImage(ImageProducer)

Creates an image from the specified image producer.

createImage(int, int)

Creates an off-screen drawable Image to be used for double buffering.

deliverEvent(Event)

Deprecated.

disable()

Deprecated.

disableEvents(long)

Disables the events defined by the specified event mask parameter from being delivered to this component.

dispatchEvent(AWTEvent)

Dispatches an event to this component or one of its sub components.

doLayout()

Lays out the component.

enable()

Deprecated.

enable(boolean)

Deprecated.

enableEvents(long)

Enables the events defined by the specified event mask parameter to be delivered to this component.

getAlignmentX()

Returns the alignment along the x axis.

getAlignmentY()

Returns the alignment along the y axis.

getBackground()

Gets the background color.

getBounds()

Returns the current bounds of this component.

getColorModel()

Gets the ColorModel used to display the component on the output device.

getComponentAt(int, int)

Returns the component or subcomponent that contains the x,y location.

getComponentAt(Point)

Returns the component or subcomponent that contains the specified point.

getCursor()

Gets the cursor set on this component.

getFont()

Gets the font of the component.

getFontMetrics(Font)

Gets the font metrics for this component.

getForeground()

Gets the foreground color.

getGraphics()

Gets a Graphics context for this component.

getLocale()

Gets the locale of the component.

getLocation()

Returns the current location of this component.

getLocationOnScreen()

Returns the current location of this component in the screen's coordinate space.

getMaximumSize()

Returns the maximum size of this component.

getMinimumSize()

Returns the mininimum size of this component.

getName()

Gets the name of the component.

getParent()

Gets the parent of the component.

getPeer()

Deprecated.

getPreferredSize()

Returns the preferred size of this component.

getSize()

Returns the current size of this component.

getToolkit()

Gets the toolkit of the component.

getTreeLock()

Gets the locking object for AWT component-tree and layout operations.

gotFocus(Event, Object)

Deprecated.

handleEvent(Event)

Deprecated.

hide()

Deprecated.

imageUpdate(Image, int, int, int, int, int)

Repaints the component when the image has changed.

inside(int, int)

Deprecated.

invalidate()

Invalidates the component.

isEnabled()

Checks if this Component is enabled.

isFocusTraversable()

Returns whether this component can be traversed using Tab or Shift-Tab keyboard focus traversal.

isShowing()

Checks if this Component is showing on screen.

isValid()

Checks if this Component is valid.

isVisible()

Checks if this Component is visible.

keyDown(Event, int)

Deprecated.

keyUp(Event, int)

Deprecated.

layout()

Deprecated.

list()

Prints a listing to System.out.

list(PrintStream)

Prints a listing to the specified print stream.

list(PrintStream, int)

Prints out a list, starting at the specified indention, to the specified print stream.

list(PrintWriter)

Prints a listing to the specified print writer.

list(PrintWriter, int)

Prints out a list, starting at the specified indention, to the specified print writer.

locate(int, int)

Deprecated.

location()

Deprecated.

lostFocus(Event, Object)

Deprecated.

minimumSize()

Deprecated.

mouseDown(Event, int, int)

Deprecated.

mouseDrag(Event, int, int)

Deprecated.

mouseEnter(Event, int, int)

Deprecated.

mouseExit(Event, int, int)

Deprecated.

mouseMove(Event, int, int)

Deprecated.

mouseUp(Event, int, int)

Deprecated.

move(int, int)

Deprecated.

nextFocus()

Deprecated.

paint(Graphics)

Paints the component.

paintAll(Graphics)

Paints the component and its subcomponents.

paramString()

Returns the parameter String of this Component.

postEvent(Event)

Deprecated.

preferredSize()

Deprecated.

prepareImage(Image, ImageObserver)

Prepares an image for rendering on this Component.

prepareImage(Image, int, int, ImageObserver)

Prepares an image for rendering on this Component at the specified width and height.

print(Graphics)

Prints this component.

printAll(Graphics)

Prints the component and its subcomponents.

processComponentEvent(ComponentEvent)

Processes component events occurring on this component by dispatching them to any registered ComponentListener objects.

processEvent(AWTEvent)

Processes events occurring on this component.

processFocusEvent(FocusEvent)

Processes focus events occurring on this component by dispatching them to any registered FocusListener objects.

processKeyEvent(KeyEvent)

Processes key events occurring on this component by dispatching them to any registered KeyListener objects.

processMouseEvent(MouseEvent)

Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects.

processMouseMotionEvent(MouseEvent)

Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects.

remove(MenuComponent)

Removes the specified popup menu from the component.

removeComponentListener(ComponentListener)

Removes the specified listener so it no longer receives component events from this component.

removeFocusListener(FocusListener)

Removes the specified focus listener so it no longer receives focus events from this component.

removeKeyListener(KeyListener)

Removes the specified key listener so it no longer receives key events from this component.

removeMouseListener(MouseListener)

Removes the specified mouse listener so it no longer receives mouse events from this component.

removeMouseMotionListener(MouseMotionListener)

Removes the specified mouse motion listener so it no longer receives mouse motion events from this component.

removeNotify()

Notifies the Component that it has been removed from its container and if a peers ecists, it destroys it.

repaint()

Repaints the component.

repaint(int, int, int, int)

Repaints part of the component.

repaint(long)

Repaints the component.

repaint(long, int, int, int, int)

Repaints part of the component.

requestFocus()

Requests the input focus.

reshape(int, int, int, int)

Deprecated.

resize(Dimension)

Deprecated.

resize(int, int)

Deprecated.

setBackground(Color)

Sets the background color.

setBounds(int, int, int, int)

Reshapes the Component to the specified bounding box.

setBounds(Rectangle)

Reshapes the Component to the specified bounding box.

setCursor(Cursor)

Set the cursor image to a predefined cursor.

setEnabled(boolean)

Enables a component.

setFont(Font)

Sets the font of the component.

setForeground(Color)

Sets the foreground color.

setLocale(Locale)

Sets the locale of the component.

setLocation(int, int)

Moves the Component to a new location.

setLocation(Point)

Moves the Component to a new location.

setName(String)

Sets the name of the component to the specified string.

setSize(Dimension)

Resizes the Component to the specified dimension.

setSize(int, int)

Resizes the Component to the specified width and height.

setVisible(boolean)

Shows or hides the component depending on the boolean flag b.

show()

Deprecated.

show(boolean)

Deprecated.

size()

Deprecated.

toString()

Returns the String representation of this Component's values.

transferFocus()

Transfers the focus to the next component.

update(Graphics)

Updates the component.

validate()

Ensures that a component has a valid layout.

Properties Inheritable 
    locale=Locale 

The locale for the component.

See Also:

getLocale

Properties Public Constant 
   TOP_ALIGNMENT=float 

Ease of use constant for getAlignmentY(). Specifies an alignment to the top of the component.

Properties Public Constant 
   CENTER_ALIGNMENT=float 

Ease of use constant for getAlignmentY() and getAlignmentX(). Specifies an alignment to the center of the component.

Properties Public Constant 
   BOTTOM_ALIGNMENT=float 

Ease of use constant for getAlignmentY(). Specifies an alignment to the bottom of the component.

Properties Public Constant 
   LEFT_ALIGNMENT=float 

Ease of use constant for getAlignmentX(). Specifies an alignment to the left side of the component.

Properties Public Constant 
   RIGHT_ALIGNMENT=float 

Ease of use constant for getAlignmentX(). Specifies an alignment to the right side of the component.

    method Component() Inheritable 

Constructs a new Component. Components can be extended directly, but are lightweight in this case and must be hosted by a native container somewhere higher up in the component tree (such as a Frame for example).

    method getName() returns String public     

Gets the name of the component.

    method setName(name=String)  public     

Sets the name of the component to the specified string.

Parameters:

name - the name of the component.

    method getParent() returns Container public     

Gets the parent of the component.

    method getPeer() returns ComponentPeer public     

Note: getPeer() is deprecated. As of JDK version 1.1, programs should not directly manipulate peers.

    method getTreeLock() returns Object public   final  

Gets the locking object for AWT component-tree and layout operations.

    method getToolkit() returns Toolkit public     

Gets the toolkit of the component. This toolkit is used to create the peer for this component. Note that the Frame which contains a Component controls which toolkit is used so if the Component has not yet been added to a Frame or if it is later moved to a different Frame, the toolkit it uses may change.

    method isValid() returns boolean public     

Checks if this Component is valid. Components are invalidated when they are first shown on the screen.

See Also:

validate, invalidate

    method isVisible() returns boolean public     

Checks if this Component is visible. Components are initially visible (with the exception of top level components such as Frame).

See Also:

setVisible

    method isShowing() returns boolean public     

Checks if 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.

See Also:

setVisible

    method isEnabled() returns boolean public     

Checks if this Component is enabled. Components are initially enabled.

See Also:

setEnabled

    method setEnabled(b=boolean)  public     

Enables a component.

See Also:

isEnabled

    method enable()  public     

Note: enable() is deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).

    method enable(b=boolean)  public     

Note: enable() is deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).

    method disable()  public     

Note: disable() is deprecated. As of JDK version 1.1, replaced by setEnabled(boolean).

    method setVisible(b=boolean)  public     

Shows or hides the component depending on the boolean flag b.

Parameters:

b - if true, show the component; otherwise, hide the component.

See Also:

isVisible

    method show()  public     

Note: show() is deprecated. As of JDK version 1.1, replaced by setVisible(boolean).

    method show(b=boolean)  public     

Note: show() is deprecated. As of JDK version 1.1, replaced by setVisible(boolean).

    method hide()  public     

Note: hide() is deprecated. As of JDK version 1.1, replaced by setVisible(boolean).

    method getForeground() returns Color public     

Gets the foreground color. If the component does not have a foreground color, the foreground color of its parent is returned.

See Also:

setForeground

    method setForeground(c=Color)  public     

Sets the foreground color.

Parameters:

c - the Color

See Also:

getForeground

    method getBackground() returns Color public     

Gets the background color. If the component does not have a background color, the background color of its parent is returned.

See Also:

setBackground

    method setBackground(c=Color)  public     

Sets the background color.

Parameters:

c - the Color

See Also:

getBackground

    method getFont() returns Font public     

Gets the font of the component. If the component does not have a font, the font of its parent is returned.

See Also:

setFont

    method setFont(f=Font)  public    protect 

Sets the font of the component.

Parameters:

f - the font

See Also:

getFont

    method getLocale() returns Locale public     

Gets the locale of the component. If the component does not have a locale, the locale of its parent is returned.

Throws: IllegalComponentStateException

If the Component does not have its own locale and has not yet been added to a containment hierarchy such that the locale can be determined from the containing parent.

See Also:

setLocale

    method setLocale(l=Locale)  public     

Sets the locale of the component.

Parameters:

l - the locale

See Also:

getLocale

    method getColorModel() returns ColorModel public     

Gets the ColorModel used to display the component on the output device.

See Also:

ColorModel

    method getLocation() returns Point public     

Returns the current location of this component. The location will be in the parent's coordinate space.

See Also:

setLocation

    method getLocationOnScreen() returns Point public     

Returns the current location of this component in the screen's coordinate space.

See Also:

setLocation, getLocation

    method location() returns Point public     

Note: location() is deprecated. As of JDK version 1.1, replaced by getLocation().

    method setLocation(x=int, -
                       y=int)  public     

Moves the Component to a new location. The x and y coordinates are in the parent's coordinate space.

Parameters:

x - the x coordinate

y - the y coordinate

See Also:

getLocation, setBounds

    method move(x=int, -
                y=int)  public     

Note: move() is deprecated. As of JDK version 1.1, replaced by setLocation(int, int).

    method setLocation(p=Point)  public     

Moves the Component to a new location. The point p is given in the parent's coordinate space.

Parameters:

p - the new location for the coordinate

See Also:

getLocation, setBounds

    method getSize() returns Dimension public     

Returns the current size of this component.

See Also:

setSize

    method size() returns Dimension public     

Note: size() is deprecated. As of JDK version 1.1, replaced by getSize().

    method setSize(width=int, -
                   height=int)  public     

Resizes the Component to the specified width and height.

Parameters:

width - the width of the component

height - the height of the component

See Also:

getSize, setBounds

    method resize(width=int, -
                  height=int)  public     

Note: resize() is deprecated. As of JDK version 1.1, replaced by setSize(int, int).

    method setSize(d=Dimension)  public     

Resizes the Component to the specified dimension.

Parameters:

d - the component dimension

See Also:

setSize, setBounds

    method resize(d=Dimension)  public     

Note: resize() is deprecated. As of JDK version 1.1, replaced by setSize(Dimension).

    method getBounds() returns Rectangle public     

Returns the current bounds of this component.

See Also:

setBounds

    method bounds() returns Rectangle public     

Note: bounds() is deprecated. As of JDK version 1.1, replaced by getBounds().

    method setBounds(x=int, -
                     y=int, -
                     width=int, -
                     height=int)  public     

Reshapes the Component to the specified bounding box.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the component

height - the height of the component

See Also:

getBounds, setLocation, setSize

    method reshape(x=int, -
                   y=int, -
                   width=int, -
                   height=int)  public     

Note: reshape() is deprecated. As of JDK version 1.1, replaced by setBounds(int, int, int, int).

    method setBounds(r=Rectangle)  public     

Reshapes the Component to the specified bounding box.

Parameters:

r - the new bounding rectangle for the component

See Also:

getBounds, setLocation, setSize

    method getPreferredSize() returns Dimension public     

Returns the preferred size of this component.

See Also:

getMinimumSize, LayoutManager

    method preferredSize() returns Dimension public     

Note: preferredSize() is deprecated. As of JDK version 1.1, replaced by getPreferredSize().

    method getMinimumSize() returns Dimension public     

Returns the mininimum size of this component.

See Also:

getPreferredSize, LayoutManager

    method minimumSize() returns Dimension public     

Note: minimumSize() is deprecated. As of JDK version 1.1, replaced by getMinimumSize().

    method getMaximumSize() returns Dimension public     

Returns the maximum size of this component.

See Also:

getMinimumSize, getPreferredSize, LayoutManager

    method getAlignmentX() returns float public     

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.

    method getAlignmentY() returns float public     

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.

    method doLayout()  public     

Lays out the component. This is usually called when the component (more specifically, container) is validated.

See Also:

validate, LayoutManager

    method layout()  public     

Note: layout() is deprecated. As of JDK version 1.1, replaced by doLayout().

    method validate()  public     

Ensures that a component has a valid layout. This method is primarily intended to operate on Container instances.

See Also:

invalidate, doLayout, LayoutManager, validate

    method invalidate()  public     

Invalidates the component. The component and all parents above it are marked as needing to be laid out. This method can be called often, so it needs to execute quickly.

See Also:

validate, doLayout, LayoutManager

    method getGraphics() returns Graphics public     

Gets a Graphics context for this component. This method will return null if the component is currently not on the screen.

See Also:

paint

    method getFontMetrics(font=Font) returns FontMetrics public     

Gets the font metrics for this component.

Parameters:

font - the font

See Also:

getFont

    method setCursor(cursor=Cursor)  public    protect 

Set the cursor image to a predefined cursor.

Parameters:

cursorType - one of the cursor constants defined above.

See Also:

Cursor

    method getCursor() returns Cursor public     

Gets the cursor set on this component.

    method paint(g=Graphics)  public     

Paints the component. This method is called when the contents of the component should be painted in response to the component first being shown or damage needing repair. The clip rectangle in the Graphics parameter will be set to the area which needs to be painted.

Parameters:

g - the specified Graphics window

See Also:

update

    method update(g=Graphics)  public     

Updates the component. This method is called in response to a call to repaint. You can assume that the background is not cleared.

Parameters:

g - the specified Graphics window

See Also:

paint, repaint

    method paintAll(g=Graphics)  public     

Paints the component and its subcomponents.

Parameters:

g - the specified Graphics window

See Also:

paint

    method repaint()  public     

Repaints the component. This will result in a call to update as soon as possible.

See Also:

paint

    method repaint(tm=long)  public     

Repaints the component. This will result in a call to update within tm milliseconds.

Parameters:

tm - maximum time in milliseconds before update

See Also:

paint

    method repaint(x=int, -
                   y=int, -
                   width=int, -
                   height=int)  public     

Repaints part of the component. This will result in a call to update as soon as possible.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width

height - the height

See Also:

repaint

    method repaint(tm=long, -
                   x=int, -
                   y=int, -
                   width=int, -
                   height=int)  public     

Repaints part of the component. This will result in a call to update width tm millseconds.

Parameters:

tm - maximum time in milliseconds before update

x - the x coordinate

y - the y coordinate

width - the width

height - the height

See Also:

repaint

    method print(g=Graphics)  public     

Prints this component. The default implementation of this method calls paint.

Parameters:

g - the specified Graphics window

See Also:

paint

    method printAll(g=Graphics)  public     

Prints the component and its subcomponents.

Parameters:

g - the specified Graphics window

See Also:

print

    method imageUpdate(img=Image, -
                       flags=int, -
                       x=int, -
                       y=int, -
                       w=int, -
                       h=int) returns boolean public     

Repaints the component when the image has changed.

Returns:

true if image has changed; false otherwise.

    method createImage(producer=ImageProducer) returns Image public     

Creates an image from the specified image producer.

Parameters:

producer - the image producer

    method createImage(width=int, -
                       height=int) returns Image public     

Creates an off-screen drawable Image to be used for double buffering.

Parameters:

width - the specified width

height - the specified height

    method prepareImage(image=Image, -
                        observer=ImageObserver) returns boolean public     

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.

Parameters:

image - the Image to prepare a screen representation for

observer - the ImageObserver object to be notified as the image is being prepared

Returns:

true if the image has already been fully prepared

See Also:

ImageObserver

    method prepareImage(image=Image, -
                        width=int, -
                        height=int, -
                        observer=ImageObserver) returns boolean public     

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.

Parameters:

image - the Image to prepare a screen representation for

width - the width of the desired screen representation

height - the height of the desired screen representation

observer - the ImageObserver object to be notified as the image is being prepared

Returns:

true if the image has already been fully prepared

See Also:

ImageObserver

    method checkImage(image=Image, -
                      observer=ImageObserver) returns int public     

Returns the status of the construction of a screen representation of the specified image. This method does not cause the image to begin loading. Use the prepareImage method to force the loading of an image.

Parameters:

image - the Image to check the status of

observer - the ImageObserver object to be notified as the image is being prepared

Returns:

the boolean OR of the ImageObserver flags for the data that is currently available

See Also:

ImageObserver, prepareImage

    method checkImage(image=Image, -
                      width=int, -
                      height=int, -
                      observer=ImageObserver) returns int public     

Returns the status of the construction of a scaled screen representation of the specified image. This method does not cause the image to begin loading, use the prepareImage method to force the loading of an image.

Parameters:

image - the Image to check the status of

width - the width of the scaled version to check the status of

height - the height of the scaled version to check the status of

observer - the ImageObserver object to be notified as the image is being prepared

Returns:

the boolean OR of the ImageObserver flags for the data that is currently available

See Also:

ImageObserver, prepareImage

    method contains(x=int, -
                    y=int) returns boolean public     

Checks whether this component "contains" the specified (x, y) location, where x and y are defined to be relative to the coordinate system of this component.

Parameters:

x - the x coordinate

y - the y coordinate

See Also:

getComponentAt

    method inside(x=int, -
                  y=int) returns boolean public     

Note: inside() is deprecated. As of JDK version 1.1, replaced by contains(int, int).

    method contains(p=Point) returns boolean public     

Checks whether this component "contains" the specified point, where x and y in the point are defined to be relative to the coordinate system of this component.

Parameters:

p - the point

See Also:

getComponentAt

    method getComponentAt(x=int, -
                          y=int) returns Component public     

Returns the component or subcomponent that contains the x,y location.

Parameters:

x - the x coordinate

y - the y coordinate

See Also:

contains

    method locate(x=int, -
                  y=int) returns Component public     

Note: locate() is deprecated. As of JDK version 1.1, replaced by getComponentAt(int, int).

    method getComponentAt(p=Point) returns Component public     

Returns the component or subcomponent that contains the specified point.

Parameters:

p - the point

See Also:

contains

    method deliverEvent(e=Event)  public     

Note: deliverEvent() is deprecated. As of JDK version 1.1

    method dispatchEvent(e=AWTEvent)  public   final  

Dispatches an event to this component or one of its sub components.

Parameters:

e - the event

    method postEvent(e=Event) returns boolean public     

Note: postEvent() is deprecated. As of JDK version 1.1, replaced by dispatchEvent(AWTEvent).

    method addComponentListener(l=ComponentListener)  public    protect 

Adds the specified component listener to receive component events from this component.

Parameters:

l - the component listener

    method removeComponentListener(l=ComponentListener)  public    protect 

Removes the specified listener so it no longer receives component events from this component.

Parameters:

l - the component listener

    method addFocusListener(l=FocusListener)  public    protect 

Adds the specified focus listener to receive focus events from this component.

Parameters:

l - the focus listener

    method removeFocusListener(l=FocusListener)  public    protect 

Removes the specified focus listener so it no longer receives focus events from this component.

Parameters:

l - the focus listener

    method addKeyListener(l=KeyListener)  public    protect 

Adds the specified key listener to receive key events from this component.

Parameters:

l - the key listener

    method removeKeyListener(l=KeyListener)  public    protect 

Removes the specified key listener so it no longer receives key events from this component.

Parameters:

l - the key listener

    method addMouseListener(l=MouseListener)  public    protect 

Adds the specified mouse listener to receive mouse events from this component.

Parameters:

l - the mouse listener

    method removeMouseListener(l=MouseListener)  public    protect 

Removes the specified mouse listener so it no longer receives mouse events from this component.

Parameters:

l - the mouse listener

    method addMouseMotionListener(l=MouseMotionListener)  public    protect 

Adds the specified mouse motion listener to receive mouse motion events from this component.

Parameters:

l - the mouse motion listener

    method removeMouseMotionListener(l=MouseMotionListener)  public    protect 

Removes the specified mouse motion listener so it no longer receives mouse motion events from this component.

Parameters:

l - the mouse motion listener

    method enableEvents(eventsToEnable=long)  Inheritable   final  

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 type is added to the component, therefore this method only needs to be invoked by subclasses of a component which desire to have the specified event types delivered to processEvent regardless of whether a listener is registered.

Parameters:

eventsToEnable - the event mask defining the event types

    method disableEvents(eventsToDisable=long)  Inheritable   final  

Disables the events defined by the specified event mask parameter from being delivered to this component.

Parameters:

eventsToDisable - the event mask defining the event types

    method processEvent(e=AWTEvent)  Inheritable     

Processes events occurring on this component. By default this method will call the appropriate processXXXEvent method for the class of event. This method will not be called unless and event type is enabled for this component; this happens when one of the following occurs: a) A listener object is registered for that event type b) The event type is enabled via enableEvents() Classes overriding this method should call super.processEvent() to ensure default event processing continues normally.

Parameters:

e - the event

See Also:

enableEvents, processComponentEvent, processFocusEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent

    method processComponentEvent(e=ComponentEvent)  Inheritable     

Processes component events occurring on this component by dispatching them to any registered ComponentListener objects. NOTE: This method will not be called unless component events are enabled for this component; this happens when one of the following occurs: a) A ComponentListener object is registered via addComponentListner() b) Component events are enabled via enableEvents() Classes overriding this method should call super.processComponentEvent() to ensure default event processing continues normally.

Parameters:

e - the component event

    method processFocusEvent(e=FocusEvent)  Inheritable     

Processes focus events occurring on this component by dispatching them to any registered FocusListener objects. NOTE: This method will not be called unless focus events are enabled for this component; this happens when one of the following occurs: a) A FocusListener object is registered via addFocusListener() b) Focus events are enabled via enableEvents() Classes overriding this method should call super.processFocusEvent() to ensure default event processing continues normally.

Parameters:

e - the focus event

    method processKeyEvent(e=KeyEvent)  Inheritable     

Processes key events occurring on this component by dispatching them to any registered KeyListener objects. NOTE: This method will not be called unless key events are enabled for this component; this happens when one of the following occurs: a) A KeyListener object is registered via addKeyListener() b) Key events are enabled via enableEvents() Classes overriding this method should call super.processKeyEvent() to ensure default event processing continues normally.

Parameters:

e - the key event

    method processMouseEvent(e=MouseEvent)  Inheritable     

Processes mouse events occurring on this component by dispatching them to any registered MouseListener objects. NOTE: This method will not be called unless mouse events are enabled for this component; this happens when one of the following occurs: a) A MouseListener object is registered via addMouseListener() b) Mouse events are enabled via enableEvents() Classes overriding this method should call super.processMouseEvent() to ensure default event processing continues normally.

Parameters:

e - the mouse event

    method processMouseMotionEvent(e=MouseEvent)  Inheritable     

Processes mouse motion events occurring on this component by dispatching them to any registered MouseMotionListener objects. NOTE: This method will not be called unless mouse motion events are enabled for this component; this happens when one of the following occurs: a) A MouseMotionListener object is registered via addMouseMotionListener() b) Mouse Motion events are enabled via enableEvents() Classes overriding this method should call super.processMouseMotionEvent() to ensure default event processing continues normally.

Parameters:

e - the mouse motion event

    method handleEvent(evt=Event) returns boolean public     

Note: handleEvent() is deprecated. As of JDK version 1.1 replaced by processEvent(AWTEvent).

    method mouseDown(evt=Event, -
                     x=int, -
                     y=int) returns boolean public     

Note: mouseDown() is deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

    method mouseDrag(evt=Event, -
                     x=int, -
                     y=int) returns boolean public     

Note: mouseDrag() is deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).

    method mouseUp(evt=Event, -
                   x=int, -
                   y=int) returns boolean public     

Note: mouseUp() is deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

    method mouseMove(evt=Event, -
                     x=int, -
                     y=int) returns boolean public     

Note: mouseMove() is deprecated. As of JDK version 1.1, replaced by processMouseMotionEvent(MouseEvent).

    method mouseEnter(evt=Event, -
                      x=int, -
                      y=int) returns boolean public     

Note: mouseEnter() is deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

    method mouseExit(evt=Event, -
                     x=int, -
                     y=int) returns boolean public     

Note: mouseExit() is deprecated. As of JDK version 1.1, replaced by processMouseEvent(MouseEvent).

    method keyDown(evt=Event, -
                   key=int) returns boolean public     

Note: keyDown() is deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).

    method keyUp(evt=Event, -
                 key=int) returns boolean public     

Note: keyUp() is deprecated. As of JDK version 1.1, replaced by processKeyEvent(KeyEvent).

    method action(evt=Event, -
                  what=Object) returns boolean public     

Note: action() is deprecated. As of JDK version 1.1, should register this component as ActionListener on component which fires action events.

    method addNotify()  public     

Notifies the Component that it has been added to a container and if a peer is required, it should be created. This method should be called by Container.add, and not by user code directly.

See Also:

removeNotify

    method removeNotify()  public     

Notifies the Component that it has been removed from its container and if a peers ecists, it destroys it. This method should be called by Container.remove, and not by user code directly.

See Also:

addNotify

    method gotFocus(evt=Event, -
                    what=Object) returns boolean public     

Note: gotFocus() is deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).

    method lostFocus(evt=Event, -
                     what=Object) returns boolean public     

Note: lostFocus() is deprecated. As of JDK version 1.1, replaced by processFocusEvent(FocusEvent).

    method isFocusTraversable() returns boolean public     

Returns whether this component can be traversed using Tab or Shift-Tab keyboard focus traversal. If this method returns "false", this component may still request the keyboard focus using requestFocus(), but it will not automatically be assigned focus during tab traversal.

    method requestFocus()  public     

Requests the input focus. A FocusGained event will be delivered if this request succeeds. The component must be visible on the screen for this request to be granted.

See Also:

FocusEvent, addFocusListener, processFocusEvent, isFocusTraversable

    method transferFocus()  public     

Transfers the focus to the next component.

See Also:

requestFocus

    method nextFocus()  public     

Note: nextFocus() is deprecated. As of JDK version 1.1, replaced by transferFocus().

    method add(popup=PopupMenu)  public    protect 

Adds the specified popup menu to the component.

Parameters:

popup - the popup menu to be added to the component

    method remove(popup=MenuComponent)  public    protect 

Removes the specified popup menu from the component.

Parameters:

popup - the popup menu to be removed

    method paramString() returns String Inheritable     

Returns the parameter String of this Component.

    method toString() returns String public     

Returns the String representation of this Component's values.

Overrides:

toString in class Object

    method list()  public     

Prints a listing to System.out.

    method list(out=PrintStream)  public     

Prints a listing to the specified print stream.

Parameters:

out - the Stream name

    method list(out=PrintStream, -
                indent=int)  public     

Prints out a list, starting at the specified indention, to the specified print stream.

Parameters:

out - the Stream name

indent - the start of the list

    method list(out=PrintWriter)  public     

Prints a listing to the specified print writer.

    method list(out=PrintWriter, -
                indent=int)  public     

Prints out a list, starting at the specified indention, to the specified print writer.

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