Java Platform 1.2
Beta 4

Class com.sun.java.swing.JButton

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--com.sun.java.swing.JComponent
                    |
                    +--com.sun.java.swing.AbstractButton
                          |
                          +--com.sun.java.swing.JButton

public class JButton
extends AbstractButton
implements Accessible
An implementation of a "push" button.

To create a set of mutually exclusive buttons, create a ButtonGroup object and use its add method to include the JButton objects in the group.

See How to Use Buttons in The Java Tutorial for further documentation.

For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the JButton key assignments.

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 Swing1.0 applications. It will not be possible to load serialized Swing1.0 objects with future releases of Swing. The JDK1.2 release of Swing will be the compatibility baseline for the serialized form of Swing objects.

See Also:
ButtonGroup, Serialized Form

Inner Class Summary
protected   JButton.AccessibleJButton
          The class used to obtain the accessible role for this object.
 
Inner classes inherited from class com.sun.java.swing.AbstractButton
AbstractButton.AccessibleAbstractButton , AbstractButton.ButtonChangeListener
 
Inner classes inherited from class com.sun.java.swing.JComponent
JComponent.AccessibleJComponent
 
Fields inherited from class com.sun.java.swing.AbstractButton
actionListener , BORDER_PAINTED_CHANGED_PROPERTY , changeEvent , changeListener , CONTENT_AREA_FILLED_CHANGED_PROPERTY , DISABLED_ICON_CHANGED_PROPERTY , DISABLED_SELECTED_ICON_CHANGED_PROPERTY , FOCUS_PAINTED_CHANGED_PROPERTY , HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY , HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY , ICON_CHANGED_PROPERTY , itemListener , MARGIN_CHANGED_PROPERTY , MNEMONIC_CHANGED_PROPERTY , model , MODEL_CHANGED_PROPERTY , PRESSED_ICON_CHANGED_PROPERTY , ROLLOVER_ENABLED_CHANGED_PROPERTY , ROLLOVER_ICON_CHANGED_PROPERTY , ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY , SELECTED_ICON_CHANGED_PROPERTY , TEXT_CHANGED_PROPERTY , VERTICAL_ALIGNMENT_CHANGED_PROPERTY , VERTICAL_TEXT_POSITION_CHANGED_PROPERTY
 
Fields inherited from class com.sun.java.swing.JComponent
accessibleContext , 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
BOTTOM_ALIGNMENT , CENTER_ALIGNMENT , LEFT_ALIGNMENT , RIGHT_ALIGNMENT , TOP_ALIGNMENT
 
Constructor Summary
JButton()
          Creates a button with no set text or icon.
JButton(Icon icon)
          Creates a button with an icon.
JButton(String text, Icon icon)
          Creates a button with initial text and an icon.
JButton(String text)
          Creates a button with text.
 
Method Summary
 AccessibleContext getAccessibleContext()
          Get the AccessibleContext associated with this JComponent
 String getUIClassID()
          Returns a string that specifies the name of the L&F class that renders this component.
 boolean isDefaultButton()
          Returns whether or not this button is the default button on the RootPane.
 boolean isDefaultCapable()
          Returns whether or not this button is capable of being the default button on the RootPane.
 void setDefaultCapable(boolean defaultCapable)
          Sets whether or not this button is capable of being the default button on the RootPane.
 void updateUI()
          Notification from the UIFactory that the L&F has changed.
 
Methods inherited from class com.sun.java.swing.AbstractButton
addActionListener , addChangeListener , addItemListener , checkHorizontalKey , checkVerticalKey , createActionListener , createChangeListener , createItemListener , doClick , doClick , fireActionPerformed , fireItemStateChanged , fireStateChanged , getActionCommand , getDisabledIcon , getDisabledSelectedIcon , getHorizontalAlignment , getHorizontalTextPosition , getIcon , getLabel , getMargin , getMnemonic , getModel , getPressedIcon , getRolloverIcon , getRolloverSelectedIcon , getSelectedIcon , getSelectedObjects , getText , getUI , getVerticalAlignment , getVerticalTextPosition , init , isBorderPainted , isContentAreaFilled , isFocusPainted , isRolloverEnabled , isSelected , paintBorder , removeActionListener , removeChangeListener , removeItemListener , setActionCommand , setBorderPainted , setContentAreaFilled , setDisabledIcon , setDisabledSelectedIcon , setEnabled , setFocusPainted , setHorizontalAlignment , setHorizontalTextPosition , setIcon , setLabel , setMargin , setMnemonic , setMnemonic , setModel , setPressedIcon , setRolloverEnabled , setRolloverIcon , setRolloverSelectedIcon , setSelected , setSelectedIcon , setText , setUI , setVerticalAlignment , setVerticalTextPosition
 
Methods inherited from class com.sun.java.swing.JComponent
addAncestorListener , addNotify , addPropertyChangeListener , addVetoableChangeListener , computeVisibleRect , contains , createToolTip , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , firePropertyChange , fireVetoableChange , getActionForKeyStroke , getAlignmentX , getAlignmentY , getAutoscrolls , getBorder , getBounds , getClientProperty , getComponentGraphics , getConditionForKeyStroke , getDebugGraphicsOptions , getGraphics , getHeight , getInsets , getInsets , getLocation , getMaximumSize , getMinimumSize , getNextFocusableComponent , getPreferredSize , getRegisteredKeyStrokes , getRootPane , getSize , getToolTipLocation , getToolTipText , getToolTipText , getTopLevelAncestor , getVisibleRect , getWidth , getX , getY , grabFocus , hasFocus , isDoubleBuffered , isFocusCycleRoot , isFocusTraversable , isLightweightComponent , isManagingFocus , isOpaque , isOptimizedDrawingEnabled , isPaintingTile , isRequestFocusEnabled , isValidateRoot , paint , paintChildren , paintComponent , paintImmediately , paintImmediately , processComponentKeyEvent , processFocusEvent , processKeyEvent , processMouseMotionEvent , putClientProperty , registerKeyboardAction , registerKeyboardAction , removeAncestorListener , removeNotify , removePropertyChangeListener , removeVetoableChangeListener , repaint , repaint , requestDefaultFocus , requestFocus , resetKeyboardActions , reshape , revalidate , scrollRectToVisible , setAlignmentX , setAlignmentY , setAutoscrolls , setBorder , setDebugGraphicsOptions , setDoubleBuffered , setMaximumSize , setMinimumSize , setNextFocusableComponent , setOpaque , setPreferredSize , setRequestFocusEnabled , setToolTipText , setUI , setVisible , unregisterKeyboardAction , update
 
Methods inherited from class java.awt.Container
add , add , add , add , add , addContainerListener , addImpl , countComponents , deliverEvent , doLayout , findComponentAt , findComponentAt , getComponent , getComponentAt , getComponentAt , getComponentCount , getComponents , getLayout , insets , invalidate , isAncestorOf , layout , list , list , locate , minimumSize , paintComponents , paramString , preferredSize , print , printComponents , processContainerEvent , processEvent , remove , remove , removeAll , removeContainerListener , setLayout , validate , validateTree
 
Methods inherited from class java.awt.Component
action , add , addComponentListener , addFocusListener , addInputMethodListener , addKeyListener , addMouseListener , addMouseMotionListener , addPropertyChangeListener , bounds , checkImage , checkImage , coalesceEvents , contains , createImage , createImage , disable , disableEvents , dispatchEvent , enable , enable , enableEvents , enableInputMethods , getBackground , getBounds , getColorModel , getComponentOrientation , getCursor , getDropTarget , getFont , getFontMetrics , getForeground , getInputContext , getInputMethodRequests , getLocale , getLocation , getLocationOnScreen , getName , getParent , getPeer , getSize , getToolkit , getTreeLock , gotFocus , handleEvent , hide , imageUpdate , inside , isDisplayable , isEnabled , isLightweight , isShowing , isValid , isVisible , keyDown , keyUp , list , list , list , location , lostFocus , mouseDown , mouseDrag , mouseEnter , mouseExit , mouseMove , mouseUp , move , nextFocus , paintAll , postEvent , prepareImage , prepareImage , printAll , processComponentEvent , processInputMethodEvent , processMouseEvent , remove , removeComponentListener , removeFocusListener , removeInputMethodListener , removeKeyListener , removeMouseListener , removeMouseMotionListener , removePropertyChangeListener , repaint , repaint , repaint , resize , resize , setBackground , setBounds , setBounds , setComponentOrientation , setCursor , setDropTarget , setFont , setForeground , setLocale , setLocation , setLocation , setName , setSize , setSize , show , show , size , toString , transferFocus
 
Methods inherited from class java.lang.Object
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait
 

Constructor Detail

JButton

public JButton()
Creates a button with no set text or icon.

JButton

public JButton(Icon icon)
Creates a button with an icon.
Parameters:
icon - the Icon image to display on the button

JButton

public JButton(String text)
Creates a button with text.
Parameters:
text - the text of the button

JButton

public JButton(String text,
               Icon icon)
Creates a button with initial text and an icon.
Parameters:
text - the text of the button.
icon - the Icon image to display on the button
Method Detail

updateUI

public void updateUI()
Notification from the UIFactory that the L&F has changed.
Overrides:
updateUI in class AbstractButton
See Also:
JComponent.updateUI()

getUIClassID

public String getUIClassID()
Returns a string that specifies the name of the L&F class that renders this component.
Returns:
"ButtonUI"
Overrides:
getUIClassID in class JComponent
See Also:
JComponent.getUIClassID(), UIDefaults.getUI(com.sun.java.swing.JComponent)

isDefaultButton

public boolean isDefaultButton()
Returns whether or not this button is the default button on the RootPane.
Returns:
"boolean"
See Also:
JRootPane.setDefaultButton(com.sun.java.swing.JButton)

isDefaultCapable

public boolean isDefaultCapable()
Returns whether or not this button is capable of being the default button on the RootPane.
Returns:
"boolean"
See Also:
setDefaultCapable(boolean), isDefaultButton(), JRootPane.setDefaultButton(com.sun.java.swing.JButton)

setDefaultCapable

public void setDefaultCapable(boolean defaultCapable)
Sets whether or not this button is capable of being the default button on the RootPane.
Returns:
"boolean"
See Also:
isDefaultCapable()

getAccessibleContext

public AccessibleContext getAccessibleContext()
Get the AccessibleContext associated with this JComponent
Specified by:
getAccessibleContext in interface Accessible
Returns:
the AccessibleContext of this JComponent
Overrides:
getAccessibleContext in class JComponent

Java Platform 1.2
Beta 4

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