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java.awt
Class Button  

java.lang.Object
  java.awt.Component
      java.awt.Button

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, MenuContainer, java.io.Serializable

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public class Button

extends Component

implements java.io.Serializable, javax.accessibility.Accessible

This class provides a button widget for the AWT.

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Nested Class Summary
protected  class	Button.AccessibleAWTButton

 

Nested classes inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy, Component.HeavyweightInLightweightListener

 

Field Summary
private  java.awt.event.ActionListener	action_listeners
(package private)  java.lang.String	actionCommand
(package private)  java.lang.String	label
private static long	next_button_number
private static long	serialVersionUID

 

Fields inherited from class java.awt.Component

accessibleContext, background, BOTTOM_ALIGNMENT, bufferStrategy, CENTER_ALIGNMENT, changeSupport, componentListener, componentSerializedDataVersion, cursor, dropTarget, enabled, eventMask, focusable, focusListener, focusTraversalKeys, focusTraversalKeysEnabled, font, foreground, graphicsConfig, height, hierarchyBoundsListener, hierarchyListener, ignoreRepaint, inputMethodListener, isFocusTraversableOverridden, isPacked, keyListener, LEFT_ALIGNMENT, locale, minSize, mouseListener, mouseMotionListener, mouseWheelListener, name, nameExplicitlySet, newEventsOnly, orientation, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, TOP_ALIGNMENT, treeLock, valid, visible, width, x, y

 

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

 

Constructor Summary

Button()           Initializes a new instance of Button with no label.

Button(java.lang.String label)           Initializes a new instance of Button with the specified label.

 

Method Summary
void	addActionListener(java.awt.event.ActionListener listener)           Adds a new entry to the list of listeners that will receive action events from this button.
void	addNotify()           Notifies this button that it should create its native peer object.
(package private)  void	dispatchEventImpl(AWTEvent e)           Implementation of dispatchEvent.
(package private)  java.lang.String	generateName()           Generate a unique name for this button.
javax.accessibility.AccessibleContext	getAccessibleContext()           Gets the AccessibleContext associated with this Button.
java.lang.String	getActionCommand()           Returns the action command name for this button.
java.awt.event.ActionListener[]	getActionListeners()           Returns all added ActionListener objects.
java.lang.String	getLabel()           Returns the label for this button.
java.util.EventListener[]	getListeners(java.lang.Class listenerType)           Returns all registered EventListers of the given listenerType.
private static long	getUniqueLong()
protected  java.lang.String	paramString()           Returns a debugging string for this button.
protected  void	processActionEvent(java.awt.event.ActionEvent event)           This method dispatches an action event for this button to any registered listeners.
protected  void	processEvent(AWTEvent event)           Processes an event for this button.
void	removeActionListener(java.awt.event.ActionListener listener)           Removes the specified listener from the list of listeners that will receive action events from this button.
void	setActionCommand(java.lang.String actionCommand)           Sets the action command name for this button to the specified value.
void	setLabel(java.lang.String label)           Sets the label for this button to the specified value.

 

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, eventTypeEnabled, findNextFocusComponent, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getGraphicsConfigurationImpl, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paint, paintAll, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setPeer, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, translateEvent, update, validate

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

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actionCommand

java.lang.String actionCommand

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label

java.lang.String label

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action_listeners

private transient java.awt.event.ActionListener action_listeners

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next_button_number

private static transient long next_button_number

Constructor Detail

Button

public Button()

Initializes a new instance of Button with no label.

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Button

public Button(java.lang.String label)

Initializes a new instance of Button with the specified label. The action command name is also initialized to this value.

Method Detail

getLabel

public java.lang.String getLabel()

Returns the label for this button.

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setLabel

public void setLabel(java.lang.String label)

Sets the label for this button to the specified value.

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getActionCommand

public java.lang.String getActionCommand()

Returns the action command name for this button.

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setActionCommand

public void setActionCommand(java.lang.String actionCommand)

Sets the action command name for this button to the specified value.

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addActionListener

public void addActionListener(java.awt.event.ActionListener listener)

Adds a new entry to the list of listeners that will receive action events from this button.

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removeActionListener

public void removeActionListener(java.awt.event.ActionListener listener)

Removes the specified listener from the list of listeners that will receive action events from this button.

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getActionListeners

public java.awt.event.ActionListener[] getActionListeners()

Returns all added ActionListener objects.

Since:

1.4

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getListeners

public java.util.EventListener[] getListeners(java.lang.Class listenerType)

Returns all registered EventListers of the given listenerType. listenerType must be a subclass of EventListener, or a ClassClassException is thrown.

Overrides:

getListeners in class Component

Since:

1.3

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addNotify

public void addNotify()

Notifies this button that it should create its native peer object.

Overrides:

addNotify in class Component

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processEvent

protected void processEvent(AWTEvent event)

Processes an event for this button. If the specified event is an instance of ActionEvent, then the processActionEvent() method is called to dispatch it to any registered listeners. Otherwise, the superclass method will be invoked. Note that this method will not be called at all unless ActionEvent's are enabled. This will be done implicitly if any listeners are added.

Overrides:

processEvent in class Component

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processActionEvent

protected void processActionEvent(java.awt.event.ActionEvent event)

This method dispatches an action event for this button to any registered listeners.

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dispatchEventImpl

void dispatchEventImpl(AWTEvent e)

Description copied from class: Component

Implementation of dispatchEvent. Allows trusted package classes to dispatch additional events first. This implementation first translates e to an AWT 1.0 event and sends the result to Component.postEvent(java.awt.Event) 55 . If the AWT 1.0 event is not handled, and events of type e are enabled for this component, e is passed on to Component.processEvent(java.awt.AWTEvent) 55 .

Overrides:

dispatchEventImpl in class Component

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paramString

protected java.lang.String paramString()

Returns a debugging string for this button.

Overrides:

paramString in class Component

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getAccessibleContext

public javax.accessibility.AccessibleContext getAccessibleContext()

Gets the AccessibleContext associated with this Button. The context is created, if necessary.

Specified by:

getAccessibleContext in interface javax.accessibility.Accessible

Overrides:

getAccessibleContext in class Component

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generateName

java.lang.String generateName()

Generate a unique name for this button.

Overrides:

generateName in class Component

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getUniqueLong

private static long getUniqueLong()

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> java >> [ awt overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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