Java javax.swing Class AbstractButton（JDK8）

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Java™ Platform
Standard Ed. 8

All Classes

Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.AbstractButton

All Implemented Interfaces:

ImageObserver, ItemSelectable, MenuContainer, Serializable, SwingConstants

Direct Known Subclasses:

JButton, JMenuItem, JToggleButton
```
public abstract class AbstractButton
extends JComponent
implements ItemSelectable, SwingConstants
```
Defines common behaviors for buttons and menu items.
Buttons can be configured, and to some degree controlled, by Actions. Using an Action with a button has many benefits beyond directly configuring a button. Refer to Swing Components Supporting Action for more details, and you can find more information in How to Use Actions, a section in The Java Tutorial.

For further information see How to Use Buttons, Check Boxes, and Radio Buttons, a section in The Java Tutorial.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`AbstractButton.AccessibleAbstractButton` This class implements accessibility support for the `AbstractButton` class.
`protected class`	`AbstractButton.ButtonChangeListener` Extends `ChangeListener` to be serializable.

Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields
Modifier and Type	Field and Description
`protected ActionListener`	`actionListener` The button model's `ActionListener`.
`static String`	`BORDER_PAINTED_CHANGED_PROPERTY` Identifies a change to having the border drawn, or having it not drawn.
`protected ChangeEvent`	`changeEvent` Only one `ChangeEvent` is needed per button instance since the event's only state is the source property.
`protected ChangeListener`	`changeListener` The button model's `changeListener`.
`static String`	`CONTENT_AREA_FILLED_CHANGED_PROPERTY` Identifies a change to having the button paint the content area.
`static String`	`DISABLED_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the button has been disabled.
`static String`	`DISABLED_SELECTED_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the button has been disabled and selected.
`static String`	`FOCUS_PAINTED_CHANGED_PROPERTY` Identifies a change to having the border highlighted when focused, or not.
`static String`	`HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY` Identifies a change in the button's horizontal alignment.
`static String`	`HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY` Identifies a change in the button's horizontal text position.
`static String`	`ICON_CHANGED_PROPERTY` Identifies a change to the icon that represents the button.
`protected ItemListener`	`itemListener` The button model's `ItemListener`.
`static String`	`MARGIN_CHANGED_PROPERTY` Identifies a change in the button's margins.
`static String`	`MNEMONIC_CHANGED_PROPERTY` Identifies a change to the button's mnemonic.
`protected ButtonModel`	`model` The data model that determines the button's state.
`static String`	`MODEL_CHANGED_PROPERTY` Identifies a change in the button model.
`static String`	`PRESSED_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the button has been pressed.
`static String`	`ROLLOVER_ENABLED_CHANGED_PROPERTY` Identifies a change from rollover enabled to disabled or back to enabled.
`static String`	`ROLLOVER_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the cursor is over the button.
`static String`	`ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the cursor is over the button and it has been selected.
`static String`	`SELECTED_ICON_CHANGED_PROPERTY` Identifies a change to the icon used when the button has been selected.
`static String`	`TEXT_CHANGED_PROPERTY` Identifies a change in the button's text.
`static String`	`VERTICAL_ALIGNMENT_CHANGED_PROPERTY` Identifies a change in the button's vertical alignment.
`static String`	`VERTICAL_TEXT_POSITION_CHANGED_PROPERTY` Identifies a change in the button's vertical text position.

Fields inherited from class javax.swing.JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors

Constructor and Description

AbstractButton()

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected void`	`actionPropertyChanged(Action action, String propertyName)` Updates the button's state in response to property changes in the associated action.
`void`	`addActionListener(ActionListener l)` Adds an `ActionListener` to the button.
`void`	`addChangeListener(ChangeListener l)` Adds a `ChangeListener` to the button.
`protected void`	`addImpl(Component comp, Object constraints, int index)` Adds the specified component to this container at the specified index, refer to `Container.addImpl(Component, Object, int)` for a complete description of this method.
`void`	`addItemListener(ItemListener l)` Adds an `ItemListener` to the `checkbox`.
`protected int`	`checkHorizontalKey(int key, String exception)` Verify that the `key` argument is a legal value for the `horizontalAlignment` and `horizontalTextPosition` properties.
`protected int`	`checkVerticalKey(int key, String exception)` Verify that the `key` argument is a legal value for the vertical properties.
`protected void`	`configurePropertiesFromAction(Action a)` Sets the properties on this button to match those in the specified `Action`.
`protected ActionListener`	`createActionListener()`
`protected PropertyChangeListener`	`createActionPropertyChangeListener(Action a)` Creates and returns a `PropertyChangeListener` that is responsible for listening for changes from the specified `Action` and updating the appropriate properties.
`protected ChangeListener`	`createChangeListener()` Subclasses that want to handle `ChangeEvents` differently can override this to return another `ChangeListener` implementation.
`protected ItemListener`	`createItemListener()`
`void`	`doClick()` Programmatically perform a "click".
`void`	`doClick(int pressTime)` Programmatically perform a "click".
`protected void`	`fireActionPerformed(ActionEvent event)` Notifies all listeners that have registered interest for notification on this event type.
`protected void`	`fireItemStateChanged(ItemEvent event)` Notifies all listeners that have registered interest for notification on this event type.
`protected void`	`fireStateChanged()` Notifies all listeners that have registered interest for notification on this event type.
`Action`	`getAction()` Returns the currently set `Action` for this `ActionEvent` source, or `null` if no `Action` is set.
`String`	`getActionCommand()` Returns the action command for this button.
`ActionListener[]`	`getActionListeners()` Returns an array of all the `ActionListener`s added to this AbstractButton with addActionListener().
`ChangeListener[]`	`getChangeListeners()` Returns an array of all the `ChangeListener`s added to this AbstractButton with addChangeListener().
`Icon`	`getDisabledIcon()` Returns the icon used by the button when it's disabled.
`Icon`	`getDisabledSelectedIcon()` Returns the icon used by the button when it's disabled and selected.
`int`	`getDisplayedMnemonicIndex()` Returns the character, as an index, that the look and feel should provide decoration for as representing the mnemonic character.
`boolean`	`getHideActionText()` Returns the value of the `hideActionText` property, which determines whether the button displays text from the `Action`.
`int`	`getHorizontalAlignment()` Returns the horizontal alignment of the icon and text.
`int`	`getHorizontalTextPosition()` Returns the horizontal position of the text relative to the icon.
`Icon`	`getIcon()` Returns the default icon.
`int`	`getIconTextGap()` Returns the amount of space between the text and the icon displayed in this button.
`ItemListener[]`	`getItemListeners()` Returns an array of all the `ItemListener`s added to this AbstractButton with addItemListener().
`String`	`getLabel()` Deprecated. - Replaced by `getText`
`Insets`	`getMargin()` Returns the margin between the button's border and the label.
`int`	`getMnemonic()` Returns the keyboard mnemonic from the the current model.
`ButtonModel`	`getModel()` Returns the model that this button represents.
`long`	`getMultiClickThreshhold()` Gets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events.
`Icon`	`getPressedIcon()` Returns the pressed icon for the button.
`Icon`	`getRolloverIcon()` Returns the rollover icon for the button.
`Icon`	`getRolloverSelectedIcon()` Returns the rollover selection icon for the button.
`Icon`	`getSelectedIcon()` Returns the selected icon for the button.
`Object[]`	`getSelectedObjects()` Returns an array (length 1) containing the label or `null` if the button is not selected.
`String`	`getText()` Returns the button's text.
`ButtonUI`	`getUI()` Returns the L&F object that renders this component.
`int`	`getVerticalAlignment()` Returns the vertical alignment of the text and icon.
`int`	`getVerticalTextPosition()` Returns the vertical position of the text relative to the icon.
`boolean`	`imageUpdate(Image img, int infoflags, int x, int y, int w, int h)` This is overridden to return false if the current `Icon`'s `Image` is not equal to the passed in `Image` `img`.
`protected void`	`init(String text, Icon icon)`
`boolean`	`isBorderPainted()` Gets the `borderPainted` property.
`boolean`	`isContentAreaFilled()` Gets the `contentAreaFilled` property.
`boolean`	`isFocusPainted()` Gets the `paintFocus` property.
`boolean`	`isRolloverEnabled()` Gets the `rolloverEnabled` property.
`boolean`	`isSelected()` Returns the state of the button.
`protected void`	`paintBorder(Graphics g)` Paint the button's border if `BorderPainted` property is true and the button has a border.
`protected String`	`paramString()` Returns a string representation of this `AbstractButton`.
`void`	`removeActionListener(ActionListener l)` Removes an `ActionListener` from the button.
`void`	`removeChangeListener(ChangeListener l)` Removes a ChangeListener from the button.
`void`	`removeItemListener(ItemListener l)` Removes an `ItemListener` from the button.
`void`	`removeNotify()` Notifies this component that it no longer has a parent component.
`void`	`setAction(Action a)` Sets the `Action`.
`void`	`setActionCommand(String actionCommand)` Sets the action command for this button.
`void`	`setBorderPainted(boolean b)` Sets the `borderPainted` property.
`void`	`setContentAreaFilled(boolean b)` Sets the `contentAreaFilled` property.
`void`	`setDisabledIcon(Icon disabledIcon)` Sets the disabled icon for the button.
`void`	`setDisabledSelectedIcon(Icon disabledSelectedIcon)` Sets the disabled selection icon for the button.
`void`	`setDisplayedMnemonicIndex(int index)` Provides a hint to the look and feel as to which character in the text should be decorated to represent the mnemonic.
`void`	`setEnabled(boolean b)` Enables (or disables) the button.
`void`	`setFocusPainted(boolean b)` Sets the `paintFocus` property, which must be `true` for the focus state to be painted.
`void`	`setHideActionText(boolean hideActionText)` Sets the `hideActionText` property, which determines whether the button displays text from the `Action`.
`void`	`setHorizontalAlignment(int alignment)` Sets the horizontal alignment of the icon and text.
`void`	`setHorizontalTextPosition(int textPosition)` Sets the horizontal position of the text relative to the icon.
`void`	`setIcon(Icon defaultIcon)` Sets the button's default icon.
`void`	`setIconTextGap(int iconTextGap)` If both the icon and text properties are set, this property defines the space between them.
`void`	`setLabel(String label)` Deprecated. - Replaced by `setText(text)`
`void`	`setLayout(LayoutManager mgr)` Sets the layout manager for this container, refer to `Container.setLayout(LayoutManager)` for a complete description of this method.
`void`	`setMargin(Insets m)` Sets space for margin between the button's border and the label.
`void`	`setMnemonic(char mnemonic)` This method is now obsolete, please use `setMnemonic(int)` to set the mnemonic for a button.
`void`	`setMnemonic(int mnemonic)` Sets the keyboard mnemonic on the current model.
`void`	`setModel(ButtonModel newModel)` Sets the model that this button represents.
`void`	`setMultiClickThreshhold(long threshhold)` Sets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events.
`void`	`setPressedIcon(Icon pressedIcon)` Sets the pressed icon for the button.
`void`	`setRolloverEnabled(boolean b)` Sets the `rolloverEnabled` property, which must be `true` for rollover effects to occur.
`void`	`setRolloverIcon(Icon rolloverIcon)` Sets the rollover icon for the button.
`void`	`setRolloverSelectedIcon(Icon rolloverSelectedIcon)` Sets the rollover selected icon for the button.
`void`	`setSelected(boolean b)` Sets the state of the button.
`void`	`setSelectedIcon(Icon selectedIcon)` Sets the selected icon for the button.
`void`	`setText(String text)` Sets the button's text.
`void`	`setUI(ButtonUI ui)` Sets the L&F object that renders this component.
`void`	`setVerticalAlignment(int alignment)` Sets the vertical alignment of the icon and text.
`void`	`setVerticalTextPosition(int textPosition)` Sets the vertical position of the text relative to the icon.
`void`	`updateUI()` Resets the UI property to a value from the current look and feel.

Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - MODEL_CHANGED_PROPERTY
```
public static final String MODEL_CHANGED_PROPERTY
```
    Identifies a change in the button model.
    
    See Also:
    
    Constant Field Values
  - TEXT_CHANGED_PROPERTY
```
public static final String TEXT_CHANGED_PROPERTY
```
    Identifies a change in the button's text.
    
    See Also:
    
    Constant Field Values
  - MNEMONIC_CHANGED_PROPERTY
```
public static final String MNEMONIC_CHANGED_PROPERTY
```
    Identifies a change to the button's mnemonic.
    
    See Also:
    
    Constant Field Values
  - MARGIN_CHANGED_PROPERTY
```
public static final String MARGIN_CHANGED_PROPERTY
```
    Identifies a change in the button's margins.
    
    See Also:
    
    Constant Field Values
  - VERTICAL_ALIGNMENT_CHANGED_PROPERTY
```
public static final String VERTICAL_ALIGNMENT_CHANGED_PROPERTY
```
    Identifies a change in the button's vertical alignment.
    
    See Also:
    
    Constant Field Values
  - HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY
```
public static final String HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY
```
    Identifies a change in the button's horizontal alignment.
    
    See Also:
    
    Constant Field Values
  - VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
```
public static final String VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
```
    Identifies a change in the button's vertical text position.
    
    See Also:
    
    Constant Field Values
  - HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY
```
public static final String HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY
```
    Identifies a change in the button's horizontal text position.
    
    See Also:
    
    Constant Field Values
  - BORDER_PAINTED_CHANGED_PROPERTY
```
public static final String BORDER_PAINTED_CHANGED_PROPERTY
```
    Identifies a change to having the border drawn, or having it not drawn.
    
    See Also:
    
    Constant Field Values
  - FOCUS_PAINTED_CHANGED_PROPERTY
```
public static final String FOCUS_PAINTED_CHANGED_PROPERTY
```
    Identifies a change to having the border highlighted when focused, or not.
    
    See Also:
    
    Constant Field Values
  - ROLLOVER_ENABLED_CHANGED_PROPERTY
```
public static final String ROLLOVER_ENABLED_CHANGED_PROPERTY
```
    Identifies a change from rollover enabled to disabled or back to enabled.
    
    See Also:
    
    Constant Field Values
  - CONTENT_AREA_FILLED_CHANGED_PROPERTY
```
public static final String CONTENT_AREA_FILLED_CHANGED_PROPERTY
```
    Identifies a change to having the button paint the content area.
    
    See Also:
    
    Constant Field Values
  - ICON_CHANGED_PROPERTY
```
public static final String ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon that represents the button.
    
    See Also:
    
    Constant Field Values
  - PRESSED_ICON_CHANGED_PROPERTY
```
public static final String PRESSED_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the button has been pressed.
    
    See Also:
    
    Constant Field Values
  - SELECTED_ICON_CHANGED_PROPERTY
```
public static final String SELECTED_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the button has been selected.
    
    See Also:
    
    Constant Field Values
  - ROLLOVER_ICON_CHANGED_PROPERTY
```
public static final String ROLLOVER_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the cursor is over the button.
    
    See Also:
    
    Constant Field Values
  - ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY
```
public static final String ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the cursor is over the button and it has been selected.
    
    See Also:
    
    Constant Field Values
  - DISABLED_ICON_CHANGED_PROPERTY
```
public static final String DISABLED_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the button has been disabled.
    
    See Also:
    
    Constant Field Values
  - DISABLED_SELECTED_ICON_CHANGED_PROPERTY
```
public static final String DISABLED_SELECTED_ICON_CHANGED_PROPERTY
```
    Identifies a change to the icon used when the button has been disabled and selected.
    
    See Also:
    
    Constant Field Values
  - model
```
protected ButtonModel model
```
    The data model that determines the button's state.
  - changeListener
```
protected ChangeListener changeListener
```
    The button model's changeListener.
  - actionListener
```
protected ActionListener actionListener
```
    The button model's ActionListener.
  - itemListener
```
protected ItemListener itemListener
```
    The button model's ItemListener.
  - changeEvent
```
protected transient ChangeEvent changeEvent
```
    Only one ChangeEvent is needed per button instance since the event's only state is the source property. The source of events generated is always "this".
- Constructor Detail
  - AbstractButton
```
public AbstractButton()
```
- Method Detail
  - setHideActionText
```
public void setHideActionText(boolean hideActionText)
```
    Sets the hideActionText property, which determines whether the button displays text from the Action. This is useful only if an Action has been installed on the button.
    
    Parameters:
    
    hideActionText - true if the button's text property should not reflect that of the Action; the default is false
    
    Since:
    
    1.6
    
    See Also:
    
    Swing Components Supporting Action
  - getHideActionText
```
public boolean getHideActionText()
```
    Returns the value of the hideActionText property, which determines whether the button displays text from the Action. This is useful only if an Action has been installed on the button.
    
    Returns:
    
    true if the button's text property should not reflect that of the Action; the default is false
    
    Since:
    
    1.6
  - getText
```
public String getText()
```
    Returns the button's text.
    
    Returns:
    
    the buttons text
    
    See Also:
    
    setText(java.lang.String)
  - setText
```
public void setText(String text)
```
    Sets the button's text.
    
    Parameters:
    
    text - the string used to set the text
    
    See Also:
    
    getText()
  - isSelected
```
public boolean isSelected()
```
    Returns the state of the button. True if the toggle button is selected, false if it's not.
    
    Returns:
    
    true if the toggle button is selected, otherwise false
  - setSelected
```
public void setSelected(boolean b)
```
    Sets the state of the button. Note that this method does not trigger an actionEvent. Call doClick to perform a programmatic action change.
    
    Parameters:
    
    b - true if the button is selected, otherwise false
  - doClick
```
public void doClick()
```
    Programmatically perform a "click". This does the same thing as if the user had pressed and released the button.
  - doClick
```
public void doClick(int pressTime)
```
    Programmatically perform a "click". This does the same thing as if the user had pressed and released the button. The button stays visually "pressed" for pressTime milliseconds.
    
    Parameters:
    
    pressTime - the time to "hold down" the button, in milliseconds
  - setMargin
```
public void setMargin(Insets m)
```
    Sets space for margin between the button's border and the label. Setting to null will cause the button to use the default margin. The button's default Border object will use this value to create the proper margin. However, if a non-default border is set on the button, it is that Border object's responsibility to create the appropriate margin space (else this property will effectively be ignored).
    
    Parameters:
    
    m - the space between the border and the label
  - getMargin
```
public Insets getMargin()
```
    Returns the margin between the button's border and the label.
    
    Returns:
    
    an Insets object specifying the margin between the botton's border and the label
    
    See Also:
    
    setMargin(java.awt.Insets)
  - getIcon
```
public Icon getIcon()
```
    Returns the default icon.
    
    Returns:
    
    the default Icon
    
    See Also:
    
    setIcon(javax.swing.Icon)
  - setIcon
```
public void setIcon(Icon defaultIcon)
```
    Sets the button's default icon. This icon is also used as the "pressed" and "disabled" icon if there is no explicitly set pressed icon.
    
    Parameters:
    
    defaultIcon - the icon used as the default image
    
    See Also:
    
    getIcon(), setPressedIcon(javax.swing.Icon)
  - getPressedIcon
```
public Icon getPressedIcon()
```
    Returns the pressed icon for the button.
    
    Returns:
    
    the pressedIcon property
    
    See Also:
    
    setPressedIcon(javax.swing.Icon)
  - setPressedIcon
```
public void setPressedIcon(Icon pressedIcon)
```
    Sets the pressed icon for the button.
    
    Parameters:
    
    pressedIcon - the icon used as the "pressed" image
    
    See Also:
    
    getPressedIcon()
  - getSelectedIcon
```
public Icon getSelectedIcon()
```
    Returns the selected icon for the button.
    
    Returns:
    
    the selectedIcon property
    
    See Also:
    
    setSelectedIcon(javax.swing.Icon)
  - setSelectedIcon
```
public void setSelectedIcon(Icon selectedIcon)
```
    Sets the selected icon for the button.
    
    Parameters:
    
    selectedIcon - the icon used as the "selected" image
    
    See Also:
    
    getSelectedIcon()
  - getRolloverIcon
```
public Icon getRolloverIcon()
```
    Returns the rollover icon for the button.
    
    Returns:
    
    the rolloverIcon property
    
    See Also:
    
    setRolloverIcon(javax.swing.Icon)
  - setRolloverIcon
```
public void setRolloverIcon(Icon rolloverIcon)
```
    Sets the rollover icon for the button.
    
    Parameters:
    
    rolloverIcon - the icon used as the "rollover" image
    
    See Also:
    
    getRolloverIcon()
  - getRolloverSelectedIcon
```
public Icon getRolloverSelectedIcon()
```
    Returns the rollover selection icon for the button.
    
    Returns:
    
    the rolloverSelectedIcon property
    
    See Also:
    
    setRolloverSelectedIcon(javax.swing.Icon)
  - setRolloverSelectedIcon
```
public void setRolloverSelectedIcon(Icon rolloverSelectedIcon)
```
    Sets the rollover selected icon for the button.
    
    Parameters:
    
    rolloverSelectedIcon - the icon used as the "selected rollover" image
    
    See Also:
    
    getRolloverSelectedIcon()
  - getDisabledIcon
```
public Icon getDisabledIcon()
```
    Returns the icon used by the button when it's disabled. If no disabled icon has been set this will forward the call to the look and feel to construct an appropriate disabled Icon.
    Some look and feels might not render the disabled Icon, in which case they will ignore this.
    
    Returns:
    
    the disabledIcon property
    
    See Also:
    
    getPressedIcon(), setDisabledIcon(javax.swing.Icon), LookAndFeel.getDisabledIcon(javax.swing.JComponent, javax.swing.Icon)
  - setDisabledIcon
```
public void setDisabledIcon(Icon disabledIcon)
```
    Sets the disabled icon for the button.
    
    Parameters:
    
    disabledIcon - the icon used as the disabled image
    
    See Also:
    
    getDisabledIcon()
  - getDisabledSelectedIcon
```
public Icon getDisabledSelectedIcon()
```
    Returns the icon used by the button when it's disabled and selected. If no disabled selection icon has been set, this will forward the call to the LookAndFeel to construct an appropriate disabled Icon from the selection icon if it has been set and to getDisabledIcon() otherwise.
    Some look and feels might not render the disabled selected Icon, in which case they will ignore this.
    
    Returns:
    
    the disabledSelectedIcon property
    
    See Also:
    
    getDisabledIcon(), setDisabledSelectedIcon(javax.swing.Icon), LookAndFeel.getDisabledSelectedIcon(javax.swing.JComponent, javax.swing.Icon)
  - setDisabledSelectedIcon
```
public void setDisabledSelectedIcon(Icon disabledSelectedIcon)
```
    Sets the disabled selection icon for the button.
    
    Parameters:
    
    disabledSelectedIcon - the icon used as the disabled selection image
    
    See Also:
    
    getDisabledSelectedIcon()
  - getVerticalAlignment
```
public int getVerticalAlignment()
```
    Returns the vertical alignment of the text and icon.
    Returns:
    the verticalAlignment property, one of the following values:
    
    SwingConstants.CENTER (the default)
    
    SwingConstants.TOP
    
    SwingConstants.BOTTOM
  - setVerticalAlignment
```
public void setVerticalAlignment(int alignment)
```
    Sets the vertical alignment of the icon and text.
    Parameters:
    alignment - one of the following values:
    
    SwingConstants.CENTER (the default)
    
    SwingConstants.TOP
    
    SwingConstants.BOTTOM
    Throws:
    
    IllegalArgumentException - if the alignment is not one of the legal values listed above
  - getHorizontalAlignment
```
public int getHorizontalAlignment()
```
    Returns the horizontal alignment of the icon and text. AbstractButton's default is SwingConstants.CENTER, but subclasses such as JCheckBox may use a different default.
    Returns:
    the horizontalAlignment property, one of the following values:
    
    SwingConstants.RIGHT
    
    SwingConstants.LEFT
    
    SwingConstants.CENTER
    
    SwingConstants.LEADING
    
    SwingConstants.TRAILING
  - setHorizontalAlignment
```
public void setHorizontalAlignment(int alignment)
```
    Sets the horizontal alignment of the icon and text. AbstractButton's default is SwingConstants.CENTER, but subclasses such as JCheckBox may use a different default.
    Parameters:
    alignment - the alignment value, one of the following values:
    
    SwingConstants.RIGHT
    
    SwingConstants.LEFT
    
    SwingConstants.CENTER
    
    SwingConstants.LEADING
    
    SwingConstants.TRAILING
    Throws:
    
    IllegalArgumentException - if the alignment is not one of the valid values
  - getVerticalTextPosition
```
public int getVerticalTextPosition()
```
    Returns the vertical position of the text relative to the icon.
    Returns:
    the verticalTextPosition property, one of the following values:
    
    SwingConstants.CENTER (the default)
    
    SwingConstants.TOP
    
    SwingConstants.BOTTOM
  - setVerticalTextPosition
```
public void setVerticalTextPosition(int textPosition)
```
    Sets the vertical position of the text relative to the icon.
    Parameters:
    textPosition - one of the following values:
    
    SwingConstants.CENTER (the default)
    
    SwingConstants.TOP
    
    SwingConstants.BOTTOM
  - getHorizontalTextPosition
```
public int getHorizontalTextPosition()
```
    Returns the horizontal position of the text relative to the icon.
    Returns:
    the horizontalTextPosition property, one of the following values:
    
    SwingConstants.RIGHT
    
    SwingConstants.LEFT
    
    SwingConstants.CENTER
    
    SwingConstants.LEADING
    
    SwingConstants.TRAILING (the default)
  - setHorizontalTextPosition
```
public void setHorizontalTextPosition(int textPosition)
```
    Sets the horizontal position of the text relative to the icon.
    Parameters:
    textPosition - one of the following values:
    
    SwingConstants.RIGHT
    
    SwingConstants.LEFT
    
    SwingConstants.CENTER
    
    SwingConstants.LEADING
    
    SwingConstants.TRAILING (the default)
    Throws:
    
    IllegalArgumentException - if textPosition is not one of the legal values listed above
  - getIconTextGap
```
public int getIconTextGap()
```
    Returns the amount of space between the text and the icon displayed in this button.
    
    Returns:
    
    an int equal to the number of pixels between the text and the icon.
    
    Since:
    
    1.4
    
    See Also:
    
    setIconTextGap(int)
  - setIconTextGap
```
public void setIconTextGap(int iconTextGap)
```
    If both the icon and text properties are set, this property defines the space between them.
    The default value of this property is 4 pixels.
    
    This is a JavaBeans bound property.
    
    Since:
    
    1.4
    
    See Also:
    
    getIconTextGap()
  - checkHorizontalKey
```
protected int checkHorizontalKey(int key,
                                 String exception)
```
    Verify that the key argument is a legal value for the horizontalAlignment and horizontalTextPosition properties. Valid values are:
    - SwingConstants.RIGHT
    - SwingConstants.LEFT
    - SwingConstants.CENTER
    - SwingConstants.LEADING
    - SwingConstants.TRAILING
    Parameters:
    
    key - the property value to check
    
    exception - the message to use in the IllegalArgumentException that is thrown for an invalid value
    
    Returns:
    
    the key argument
    
    Throws:
    
    IllegalArgumentException - if key is not one of the legal values listed above
    
    See Also:
    
    setHorizontalTextPosition(int), setHorizontalAlignment(int)
  - checkVerticalKey
```
protected int checkVerticalKey(int key,
                               String exception)
```
    Verify that the key argument is a legal value for the vertical properties. Valid values are:
    - SwingConstants.CENTER
    - SwingConstants.TOP
    - SwingConstants.BOTTOM
    Parameters:
    
    key - the property value to check
    
    exception - the message to use in the IllegalArgumentException that is thrown for an invalid value
    
    Returns:
    
    the key argument
    
    Throws:
    
    IllegalArgumentException - if key is not one of the legal values listed above
  - removeNotify
```
public void removeNotify()
```
    Notifies this component that it no longer has a parent component. When this method is invoked, any KeyboardActions set up in the the chain of parent components are removed. This method is called by the toolkit internally and should not be called directly by programs.
    
    Overrides:
    
    removeNotify in class JComponent
    
    Since:
    
    1.6
    
    See Also:
    
    JComponent.registerKeyboardAction(java.awt.event.ActionListener, java.lang.String, javax.swing.KeyStroke, int)
  - setActionCommand
```
public void setActionCommand(String actionCommand)
```
    Sets the action command for this button.
    
    Parameters:
    
    actionCommand - the action command for this button
  - getActionCommand
```
public String getActionCommand()
```
    Returns the action command for this button.
    
    Returns:
    
    the action command for this button
  - setAction
```
public void setAction(Action a)
```
    Sets the Action. The new Action replaces any previously set Action but does not affect ActionListeners independently added with addActionListener. If the Action is already a registered ActionListener for the button, it is not re-registered.
    Setting the Action results in immediately changing all the properties described in Swing Components Supporting Action. Subsequently, the button's properties are automatically updated as the Action's properties change.
    
    This method uses three other methods to set and help track the Action's property values. It uses the configurePropertiesFromAction method to immediately change the button's properties. To track changes in the Action's property values, this method registers the PropertyChangeListener returned by createActionPropertyChangeListener. The default PropertyChangeListener invokes the actionPropertyChanged method when a property in the Action changes.
    
    Parameters:
    
    a - the Action for the AbstractButton, or null
    
    Since:
    
    1.3
    
    See Also:
    
    Action, getAction(), configurePropertiesFromAction(javax.swing.Action), createActionPropertyChangeListener(javax.swing.Action), actionPropertyChanged(javax.swing.Action, java.lang.String)
  - getAction
```
public Action getAction()
```
    Returns the currently set Action for this ActionEvent source, or null if no Action is set.
    
    Returns:
    
    the Action for this ActionEvent source, or null
    
    Since:
    
    1.3
    
    See Also:
    
    Action, setAction(javax.swing.Action)
  - configurePropertiesFromAction
```
protected void configurePropertiesFromAction(Action a)
```
    Sets the properties on this button to match those in the specified Action. Refer to Swing Components Supporting Action for more details as to which properties this sets.
    
    Parameters:
    
    a - the Action from which to get the properties, or null
    
    Since:
    
    1.3
    
    See Also:
    
    Action, setAction(javax.swing.Action)
  - actionPropertyChanged
```
protected void actionPropertyChanged(Action action,
                                     String propertyName)
```
    Updates the button's state in response to property changes in the associated action. This method is invoked from the PropertyChangeListener returned from createActionPropertyChangeListener. Subclasses do not normally need to invoke this. Subclasses that support additional Action properties should override this and configurePropertiesFromAction.
    Refer to the table at Swing Components Supporting Action for a list of the properties this method sets.
    
    Parameters:
    
    action - the Action associated with this button
    
    propertyName - the name of the property that changed
    
    Since:
    
    1.6
    
    See Also:
    
    Action, configurePropertiesFromAction(javax.swing.Action)
  - createActionPropertyChangeListener
```
protected PropertyChangeListener createActionPropertyChangeListener(Action a)
```
    Creates and returns a PropertyChangeListener that is responsible for listening for changes from the specified Action and updating the appropriate properties.
    Warning: If you subclass this do not create an anonymous inner class. If you do the lifetime of the button will be tied to that of the Action.
    
    Parameters:
    
    a - the button's action
    
    Since:
    
    1.3
    
    See Also:
    
    Action, setAction(javax.swing.Action)
  - isBorderPainted
```
public boolean isBorderPainted()
```
    Gets the borderPainted property.
    
    Returns:
    
    the value of the borderPainted property
    
    See Also:
    
    setBorderPainted(boolean)
  - setBorderPainted
```
public void setBorderPainted(boolean b)
```
    Sets the borderPainted property. If true and the button has a border, the border is painted. The default value for the borderPainted property is true.
    Some look and feels might not support the borderPainted property, in which case they ignore this.
    
    Parameters:
    
    b - if true and border property is not null, the border is painted
    
    See Also:
    
    isBorderPainted()
  - paintBorder
```
protected void paintBorder(Graphics g)
```
    Paint the button's border if BorderPainted property is true and the button has a border.
    
    Overrides:
    
    paintBorder in class JComponent
    
    Parameters:
    
    g - the Graphics context in which to paint
    
    See Also:
    
    JComponent.paint(java.awt.Graphics), JComponent.setBorder(javax.swing.border.Border)
  - isFocusPainted
```
public boolean isFocusPainted()
```
    Gets the paintFocus property.
    
    Returns:
    
    the paintFocus property
    
    See Also:
    
    setFocusPainted(boolean)
  - setFocusPainted
```
public void setFocusPainted(boolean b)
```
    Sets the paintFocus property, which must be true for the focus state to be painted. The default value for the paintFocus property is true. Some look and feels might not paint focus state; they will ignore this property.
    
    Parameters:
    
    b - if true, the focus state should be painted
    
    See Also:
    
    isFocusPainted()
  - isContentAreaFilled
```
public boolean isContentAreaFilled()
```
    Gets the contentAreaFilled property.
    
    Returns:
    
    the contentAreaFilled property
    
    See Also:
    
    setContentAreaFilled(boolean)
  - setContentAreaFilled
```
public void setContentAreaFilled(boolean b)
```
    Sets the contentAreaFilled property. If true the button will paint the content area. If you wish to have a transparent button, such as an icon only button, for example, then you should set this to false. Do not call setOpaque(false). The default value for the the contentAreaFilled property is true.
    This function may cause the component's opaque property to change.
    
    The exact behavior of calling this function varies on a component-by-component and L&F-by-L&F basis.
    
    Parameters:
    
    b - if true, the content should be filled; if false the content area is not filled
    
    See Also:
    
    isContentAreaFilled(), JComponent.setOpaque(boolean)
  - isRolloverEnabled
```
public boolean isRolloverEnabled()
```
    Gets the rolloverEnabled property.
    
    Returns:
    
    the value of the rolloverEnabled property
    
    See Also:
    
    setRolloverEnabled(boolean)
  - setRolloverEnabled
```
public void setRolloverEnabled(boolean b)
```
    Sets the rolloverEnabled property, which must be true for rollover effects to occur. The default value for the rolloverEnabled property is false. Some look and feels might not implement rollover effects; they will ignore this property.
    
    Parameters:
    
    b - if true, rollover effects should be painted
    
    See Also:
    
    isRolloverEnabled()
  - getMnemonic
```
public int getMnemonic()
```
    Returns the keyboard mnemonic from the the current model.
    
    Returns:
    
    the keyboard mnemonic from the model
  - setMnemonic
```
public void setMnemonic(int mnemonic)
```
    Sets the keyboard mnemonic on the current model. The mnemonic is the key which when combined with the look and feel's mouseless modifier (usually Alt) will activate this button if focus is contained somewhere within this button's ancestor window.
    A mnemonic must correspond to a single key on the keyboard and should be specified using one of the VK_XXX keycodes defined in java.awt.event.KeyEvent. These codes and the wider array of codes for international keyboards may be obtained through java.awt.event.KeyEvent.getExtendedKeyCodeForChar. Mnemonics are case-insensitive, therefore a key event with the corresponding keycode would cause the button to be activated whether or not the Shift modifier was pressed.
    
    If the character defined by the mnemonic is found within the button's label string, the first occurrence of it will be underlined to indicate the mnemonic to the user.
    
    Parameters:
    
    mnemonic - the key code which represents the mnemonic
    
    See Also:
    
    KeyEvent, setDisplayedMnemonicIndex(int)
  - setMnemonic
```
public void setMnemonic(char mnemonic)
```
    This method is now obsolete, please use setMnemonic(int) to set the mnemonic for a button. This method is only designed to handle character values which fall between 'a' and 'z' or 'A' and 'Z'.
    
    Parameters:
    
    mnemonic - a char specifying the mnemonic value
    
    See Also:
    
    setMnemonic(int)
  - setDisplayedMnemonicIndex
```
public void setDisplayedMnemonicIndex(int index)
                               throws IllegalArgumentException
```
    Provides a hint to the look and feel as to which character in the text should be decorated to represent the mnemonic. Not all look and feels may support this. A value of -1 indicates either there is no mnemonic, the mnemonic character is not contained in the string, or the developer does not wish the mnemonic to be displayed.
    The value of this is updated as the properties relating to the mnemonic change (such as the mnemonic itself, the text...). You should only ever have to call this if you do not wish the default character to be underlined. For example, if the text was 'Save As', with a mnemonic of 'a', and you wanted the 'A' to be decorated, as 'Save As', you would have to invoke setDisplayedMnemonicIndex(5) after invoking setMnemonic(KeyEvent.VK_A).
    
    Parameters:
    
    index - Index into the String to underline
    
    Throws:
    
    IllegalArgumentException - will be thrown if index is >= length of the text, or < -1
    
    Since:
    
    1.4
    
    See Also:
    
    getDisplayedMnemonicIndex()
  - getDisplayedMnemonicIndex
```
public int getDisplayedMnemonicIndex()
```
    Returns the character, as an index, that the look and feel should provide decoration for as representing the mnemonic character.
    
    Returns:
    
    index representing mnemonic character
    
    Since:
    
    1.4
    
    See Also:
    
    setDisplayedMnemonicIndex(int)
  - setMultiClickThreshhold
```
public void setMultiClickThreshhold(long threshhold)
```
    Sets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events. After the initial mouse press occurs (and action event generated) any subsequent mouse press events which occur on intervals less than the threshhold will be ignored and no corresponding action event generated. By default the threshhold is 0, which means that for each mouse press, an action event will be fired, no matter how quickly the mouse clicks occur. In buttons where this behavior is not desirable (for example, the "OK" button in a dialog), this threshhold should be set to an appropriate positive value.
    
    Parameters:
    
    threshhold - the amount of time required between mouse press events to generate corresponding action events
    
    Throws:
    
    IllegalArgumentException - if threshhold < 0
    
    Since:
    
    1.4
    
    See Also:
    
    getMultiClickThreshhold()
  - getMultiClickThreshhold
```
public long getMultiClickThreshhold()
```
    Gets the amount of time (in milliseconds) required between mouse press events for the button to generate the corresponding action events.
    
    Returns:
    
    the amount of time required between mouse press events to generate corresponding action events
    
    Since:
    
    1.4
    
    See Also:
    
    setMultiClickThreshhold(long)
  - getModel
```
public ButtonModel getModel()
```
    Returns the model that this button represents.
    
    Returns:
    
    the model property
    
    See Also:
    
    setModel(javax.swing.ButtonModel)
  - setModel
```
public void setModel(ButtonModel newModel)
```
    Sets the model that this button represents.
    
    Parameters:
    
    newModel - the new ButtonModel
    
    See Also:
    
    getModel()
  - getUI
```
public ButtonUI getUI()
```
    Returns the L&F object that renders this component.
    
    Returns:
    
    the ButtonUI object
    
    See Also:
    
    setUI(javax.swing.plaf.ButtonUI)
  - setUI
```
public void setUI(ButtonUI ui)
```
    Sets the L&F object that renders this component.
    
    Parameters:
    
    ui - the ButtonUI L&F object
    
    See Also:
    
    getUI()
  - updateUI
```
public void updateUI()
```
    Resets the UI property to a value from the current look and feel. Subtypes of AbstractButton should override this to update the UI. For example, JButton might do the following:
```
      setUI((ButtonUI)UIManager.getUI(
          "ButtonUI", "javax.swing.plaf.basic.BasicButtonUI", this));
 
```
    Overrides:
    
    updateUI in class JComponent
    
    See Also:
    
    JComponent.setUI(javax.swing.plaf.ComponentUI), UIManager.getLookAndFeel(), UIManager.getUI(javax.swing.JComponent)
  - addImpl
```
protected void addImpl(Component comp,
                       Object constraints,
                       int index)
```
    Adds the specified component to this container at the specified index, refer to Container.addImpl(Component, Object, int) for a complete description of this method.
    
    Overrides:
    
    addImpl in class Container
    
    Parameters:
    
    comp - the component to be added
    
    constraints - an object expressing layout constraints for this component
    
    index - the position in the container's list at which to insert the component, where -1 means append to the end
    
    Throws:
    
    IllegalArgumentException - if index is invalid
    
    IllegalArgumentException - if adding the container's parent to itself
    
    IllegalArgumentException - if adding a window to a container
    
    Since:
    
    1.5
    
    See Also:
    
    Container.add(Component), Container.add(Component, int), Container.add(Component, java.lang.Object), Container.invalidate(), LayoutManager, LayoutManager2
  - setLayout
```
public void setLayout(LayoutManager mgr)
```
    Sets the layout manager for this container, refer to Container.setLayout(LayoutManager) for a complete description of this method.
    
    Overrides:
    
    setLayout in class Container
    
    Parameters:
    
    mgr - the specified layout manager
    
    Since:
    
    1.5
    
    See Also:
    
    Container.doLayout(), Container.getLayout(), Container.invalidate()
  - addChangeListener
```
public void addChangeListener(ChangeListener l)
```
    Adds a ChangeListener to the button.
    
    Parameters:
    
    l - the listener to be added
  - removeChangeListener
```
public void removeChangeListener(ChangeListener l)
```
    Removes a ChangeListener from the button.
    
    Parameters:
    
    l - the listener to be removed
  - getChangeListeners
```
public ChangeListener[] getChangeListeners()
```
    Returns an array of all the ChangeListeners added to this AbstractButton with addChangeListener().
    
    Returns:
    
    all of the ChangeListeners added or an empty array if no listeners have been added
    
    Since:
    
    1.4
  - fireStateChanged
```
protected void fireStateChanged()
```
    Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created.
    
    See Also:
    
    EventListenerList
  - addActionListener
```
public void addActionListener(ActionListener l)
```
    Adds an ActionListener to the button.
    
    Parameters:
    
    l - the ActionListener to be added
  - removeActionListener
```
public void removeActionListener(ActionListener l)
```
    Removes an ActionListener from the button. If the listener is the currently set Action for the button, then the Action is set to null.
    
    Parameters:
    
    l - the listener to be removed
  - getActionListeners
```
public ActionListener[] getActionListeners()
```
    Returns an array of all the ActionListeners added to this AbstractButton with addActionListener().
    
    Returns:
    
    all of the ActionListeners added or an empty array if no listeners have been added
    
    Since:
    
    1.4
  - createChangeListener
```
protected ChangeListener createChangeListener()
```
    Subclasses that want to handle ChangeEvents differently can override this to return another ChangeListener implementation.
    
    Returns:
    
    the new ChangeListener
  - fireActionPerformed
```
protected void fireActionPerformed(ActionEvent event)
```
    Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the event parameter.
    
    Parameters:
    
    event - the ActionEvent object
    
    See Also:
    
    EventListenerList
  - fireItemStateChanged
```
protected void fireItemStateChanged(ItemEvent event)
```
    Notifies all listeners that have registered interest for notification on this event type. The event instance is lazily created using the event parameter.
    
    Parameters:
    
    event - the ItemEvent object
    
    See Also:
    
    EventListenerList
  - createActionListener
```
protected ActionListener createActionListener()
```
  - createItemListener
```
protected ItemListener createItemListener()
```
  - setEnabled
```
public void setEnabled(boolean b)
```
    Enables (or disables) the button.
    
    Overrides:
    
    setEnabled in class JComponent
    
    Parameters:
    
    b - true to enable the button, otherwise false
    
    See Also:
    
    Component.isEnabled(), Component.isLightweight()
  - getLabel
```
@Deprecated
public String getLabel()
```
    Deprecated. - Replaced by getText
    
    Returns the label text.
    
    Returns:
    
    a String containing the label
  - setLabel
```
@Deprecated
public void setLabel(String label)
```
    Deprecated. - Replaced by setText(text)
    
    Sets the label text.
    
    Parameters:
    
    label - a String containing the text
  - addItemListener
```
public void addItemListener(ItemListener l)
```
    Adds an ItemListener to the checkbox.
    
    Specified by:
    
    addItemListener in interface ItemSelectable
    
    Parameters:
    
    l - the ItemListener to be added
    
    See Also:
    
    ItemEvent
  - removeItemListener
```
public void removeItemListener(ItemListener l)
```
    Removes an ItemListener from the button.
    
    Specified by:
    
    removeItemListener in interface ItemSelectable
    
    Parameters:
    
    l - the ItemListener to be removed
    
    See Also:
    
    ItemEvent
  - getItemListeners
```
public ItemListener[] getItemListeners()
```
    Returns an array of all the ItemListeners added to this AbstractButton with addItemListener().
    
    Returns:
    
    all of the ItemListeners added or an empty array if no listeners have been added
    
    Since:
    
    1.4
  - getSelectedObjects
```
public Object[] getSelectedObjects()
```
    Returns an array (length 1) containing the label or null if the button is not selected.
    
    Specified by:
    
    getSelectedObjects in interface ItemSelectable
    
    Returns:
    
    an array containing 1 Object: the text of the button, if the item is selected; otherwise null
  - init
```
protected void init(String text,
                    Icon icon)
```
  - imageUpdate
```
public boolean imageUpdate(Image img,
                           int infoflags,
                           int x,
                           int y,
                           int w,
                           int h)
```
    This is overridden to return false if the current Icon's Image is not equal to the passed in Image img.
    
    Specified by:
    
    imageUpdate in interface ImageObserver
    
    Overrides:
    
    imageUpdate in class Component
    
    Parameters:
    
    img - the Image to be compared
    
    infoflags - flags used to repaint the button when the image is updated and which determine how much is to be painted
    
    x - the x coordinate
    
    y - the y coordinate
    
    w - the width
    
    h - the height
    
    Returns:
    
    false if the infoflags indicate that the image is completely loaded; true otherwise.
    
    See Also:
    
    ImageObserver, Component.imageUpdate(java.awt.Image, int, int, int, int, int)
  - paramString
```
protected String paramString()
```
    Returns a string representation of this AbstractButton. 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.
    Overriding paramString to provide information about the specific new aspects of the JFC components.
    
    Overrides:
    
    paramString in class JComponent
    
    Returns:
    
    a string representation of this AbstractButton

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Standard Ed. 8

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Java javax.swing Class AbstractButton（JDK8）

Class AbstractButton

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class java.awt.Component

Field Summary

Fields inherited from class javax.swing.JComponent

Fields inherited from class java.awt.Component

Fields inherited from interface javax.swing.SwingConstants

Fields inherited from interface java.awt.image.ImageObserver

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JComponent

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Detail

MODEL_CHANGED_PROPERTY

TEXT_CHANGED_PROPERTY

MNEMONIC_CHANGED_PROPERTY

MARGIN_CHANGED_PROPERTY

VERTICAL_ALIGNMENT_CHANGED_PROPERTY

HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY

VERTICAL_TEXT_POSITION_CHANGED_PROPERTY

HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY

BORDER_PAINTED_CHANGED_PROPERTY

FOCUS_PAINTED_CHANGED_PROPERTY

ROLLOVER_ENABLED_CHANGED_PROPERTY

CONTENT_AREA_FILLED_CHANGED_PROPERTY

ICON_CHANGED_PROPERTY

PRESSED_ICON_CHANGED_PROPERTY

SELECTED_ICON_CHANGED_PROPERTY

ROLLOVER_ICON_CHANGED_PROPERTY

ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY

DISABLED_ICON_CHANGED_PROPERTY

DISABLED_SELECTED_ICON_CHANGED_PROPERTY

model

changeListener

actionListener

itemListener

changeEvent

Constructor Detail

AbstractButton

Method Detail

setHideActionText

getHideActionText

getText

setText

isSelected

setSelected

doClick

doClick

setMargin

getMargin

getIcon

setIcon

getPressedIcon

setPressedIcon

getSelectedIcon

setSelectedIcon

getRolloverIcon

setRolloverIcon

getRolloverSelectedIcon

setRolloverSelectedIcon

getDisabledIcon

setDisabledIcon

getDisabledSelectedIcon

setDisabledSelectedIcon

getVerticalAlignment

setVerticalAlignment

getHorizontalAlignment

setHorizontalAlignment

getVerticalTextPosition

setVerticalTextPosition

getHorizontalTextPosition

setHorizontalTextPosition

getIconTextGap

setIconTextGap

checkHorizontalKey