javax.swing
Class JButton

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

All Implemented Interfaces:

ImageObserver , ItemSelectable , MenuContainer , Serializable , Accessible , SwingConstants

Direct Known Subclasses:

BasicArrowButton , MetalComboBoxButton

public class JButton
extends AbstractButton   
implements Accessible   

An implementation of a "push" button. See How to Use Buttons, Check Boxes, and Radio Buttons in The Java Tutorial for information and examples of using buttons.

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^TM has been added to the java.beans package. Please see XMLEncoder .

See Also:

Serialized Form

Nested Class Summary

protected class

JButton.AccessibleJButton This class implements accessibility support for the JButton class.

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

AbstractButton.AccessibleAbstractButton , AbstractButton.ButtonChangeListener

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.BltBufferStrategy , Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.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 javax.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

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

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

JButton (Action a)
Creates a button where properties are taken from the Action supplied.

JButton (Icon icon)
Creates a button with an icon.

JButton (String text)
Creates a button with text.

JButton (String text, Icon icon)
Creates a button with initial text and an icon.

Method Summary

protected void	configurePropertiesFromAction (Action a) Factory method which sets the AbstractButton's properties according to values from the Action instance.
AccessibleContext	getAccessibleContext () Gets the AccessibleContext associated with this JButton.
String	getUIClassID () Returns a string that specifies the name of the L&F class that renders this component.
boolean	isDefaultButton () Gets the value of the defaultButton property, which if true means that this button is the current default button for its JRootPane.
boolean	isDefaultCapable () Gets the value of the defaultCapable property.
protected String	paramString () Returns a string representation of this JButton.
void	removeNotify () Overrides JComponent.removeNotify to check if this button is currently set as the default button on the RootPane, and if so, sets the RootPane's default button to null to ensure the RootPane doesn't hold onto an invalid button reference.
void	setDefaultCapable (boolean defaultCapable) Sets the defaultCapable property, which determines whether this button can be made the default button for its root pane.
void	updateUI () Resets the UI property to a value from the current look and feel.

Methods inherited from class javax.swing.AbstractButton

addActionListener , addChangeListener , addImpl , addItemListener , checkHorizontalKey , checkVerticalKey , createActionListener , createActionPropertyChangeListener , createChangeListener , createItemListener , doClick , doClick , fireActionPerformed , fireItemStateChanged , fireStateChanged , getAction , getActionCommand , getActionListeners , getChangeListeners , getDisabledIcon , getDisabledSelectedIcon , getDisplayedMnemonicIndex , getHorizontalAlignment , getHorizontalTextPosition , getIcon , getIconTextGap , getItemListeners , getLabel , getMargin , getMnemonic , getModel , getMultiClickThreshhold , getPressedIcon , getRolloverIcon , getRolloverSelectedIcon , getSelectedIcon , getSelectedObjects , getText , getUI , getVerticalAlignment , getVerticalTextPosition , imageUpdate , init , isBorderPainted , isContentAreaFilled , isFocusPainted