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

---

java.awt
Class Checkbox  

java.lang.Object
  java.awt.Component
      java.awt.Checkbox

All Implemented Interfaces:

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

---

public class Checkbox

extends Component

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

This class implements a component which has an on/off state. Two or more Checkboxes can be grouped by a CheckboxGroup.

---

Nested Class Summary
protected  class	Checkbox.AccessibleAWTCheckbox           This class provides accessibility support for the checkbox.

 

Nested classes inherited from class java.awt.Component

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

 

Field Summary
private  CheckboxGroup	group
private  java.awt.event.ItemListener	item_listeners
private  java.lang.String	label
private static long	next_checkbox_number
private static long	serialVersionUID
(package private)  boolean	state

 

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

Checkbox()           Initializes a new instance of Checkbox with no label, an initial state of off, and that is not part of any checkbox group.

Checkbox(java.lang.String label)           Initializes a new instance of Checkbox with the specified label, an initial state of off, and that is not part of any checkbox group.

Checkbox(java.lang.String label, boolean state)           Initializes a new instance of Checkbox with the specified label and initial state, and that is not part of any checkbox group.

Checkbox(java.lang.String label, boolean state, CheckboxGroup group)           Initializes a new instance of Checkbox with the specified label, initial state, and checkbox group.

Checkbox(java.lang.String label, CheckboxGroup group, boolean state)           Initializes a new instance of Checkbox with the specified label, initial state, and checkbox group.

 

Method Summary
void	addItemListener(java.awt.event.ItemListener listener)           Adds a new listeners to the list of registered listeners for this object.
void	addNotify()           Creates this object's native peer.
(package private)  void	dispatchEventImpl(AWTEvent e)           Implementation of dispatchEvent.
(package private)  java.lang.String	generateName()           Generate a unique name for this checkbox.
javax.accessibility.AccessibleContext	getAccessibleContext()           Gets the AccessibleContext associated with this Checkbox.
CheckboxGroup	getCheckboxGroup()           Returns the checkbox group this object is a member of, if any.
java.awt.event.ItemListener[]	getItemListeners()
java.lang.String	getLabel()           Returns the label for this checkbox.
java.lang.Object[]	getSelectedObjects()           Returns an array of length one containing the checkbox label if this checkbox is selected.
boolean	getState()           Returns the state of this checkbox.
private static long	getUniqueLong()
protected  java.lang.String	paramString()           Returns a debugging string for this object.
protected  void	processEvent(AWTEvent event)           Processes this event by calling processItemEvent() if it is any instance of ItemEvent.
protected  void	processItemEvent(java.awt.event.ItemEvent event)           Processes this event by dispatching it to any registered listeners.
void	removeItemListener(java.awt.event.ItemListener listener)           Removes a listener from the list of registered listeners for this object.
void	setCheckboxGroup(CheckboxGroup group)           Sets this object's checkbox group to the specified group.
void	setLabel(java.lang.String label)           Sets the label for this checkbox to the specified value.
void	setState(boolean state)           Sets the state of this checkbox 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, getListeners, 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

---

group

private CheckboxGroup group

---

label

private java.lang.String label

---

state

boolean state

---

item_listeners

private transient java.awt.event.ItemListener item_listeners

---

next_checkbox_number

private static transient long next_checkbox_number

Constructor Detail

Checkbox

public Checkbox()

Initializes a new instance of Checkbox with no label, an initial state of off, and that is not part of any checkbox group.

---

Checkbox

public Checkbox(java.lang.String label)

Initializes a new instance of Checkbox with the specified label, an initial state of off, and that is not part of any checkbox group.

---

Checkbox

public Checkbox(java.lang.String label,
                boolean state)

Initializes a new instance of Checkbox with the specified label and initial state, and that is not part of any checkbox group.

---

Checkbox

public Checkbox(java.lang.String label,
                CheckboxGroup group,
                boolean state)

Initializes a new instance of Checkbox with the specified label, initial state, and checkbox group.

---

Checkbox

public Checkbox(java.lang.String label,
                boolean state,
                CheckboxGroup group)

Initializes a new instance of Checkbox with the specified label, initial state, and checkbox group.

Method Detail

getLabel

public java.lang.String getLabel()

Returns the label for this checkbox.

---

setLabel

public void setLabel(java.lang.String label)

Sets the label for this checkbox to the specified value.

---

getState

public boolean getState()

Returns the state of this checkbox.

---

setState

public void setState(boolean state)

Sets the state of this checkbox to the specified value.

---

getSelectedObjects

public java.lang.Object[] getSelectedObjects()

Returns an array of length one containing the checkbox label if this checkbox is selected. Otherwise null is returned.

Specified by:

getSelectedObjects in interface ItemSelectable

---

getCheckboxGroup

public CheckboxGroup getCheckboxGroup()

Returns the checkbox group this object is a member of, if any.

---

setCheckboxGroup

public void setCheckboxGroup(CheckboxGroup group)

Sets this object's checkbox group to the specified group.

---

addNotify

public void addNotify()

Creates this object's native peer.

Overrides:

addNotify in class Component

---

getItemListeners

public java.awt.event.ItemListener[] getItemListeners()

---

addItemListener

public void addItemListener(java.awt.event.ItemListener listener)

Adds a new listeners to the list of registered listeners for this object.

Specified by:

addItemListener in interface ItemSelectable

---

removeItemListener

public void removeItemListener(java.awt.event.ItemListener listener)

Removes a listener from the list of registered listeners for this object.

Specified by:

removeItemListener in interface ItemSelectable

---

processEvent

protected void processEvent(AWTEvent event)

Processes this event by calling processItemEvent() if it is any instance of ItemEvent. Otherwise it is passed to the superclass for processing.

Overrides:

processEvent in class Component

---

processItemEvent

protected void processItemEvent(java.awt.event.ItemEvent event)

Processes this event by dispatching it to any registered listeners.

---

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

---

paramString

protected java.lang.String paramString()

Returns a debugging string for this object.

Overrides:

paramString in class Component

---

getAccessibleContext

public javax.accessibility.AccessibleContext getAccessibleContext()

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

Specified by:

getAccessibleContext in interface javax.accessibility.Accessible

Overrides:

getAccessibleContext in class Component

---

generateName

java.lang.String generateName()

Generate a unique name for this checkbox.

Overrides:

generateName in class Component

---

getUniqueLong

private static long getUniqueLong()

---

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

---