Package Summary Overview Summary

### class:JButton [NONE]
- 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. Buttons can be configured, and to some degree controlled, by `Action`s. 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 . See How to Use Buttons, Check Boxes, and Radio Buttons in The Java Tutorial for information and examples of using buttons. Warning: Swing is not thread safe. For more information see Swing's Threading Policy . 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`. Since: 1.2

### constructor:JButton() [NONE]
- #### JButton
      public JButton()
Creates a button with no set text or icon.

### constructor:JButton(javax.swing.Icon) [NONE]
- #### JButton
      public JButton(Icon icon)
Creates a button with an icon. Parameters: `icon` - the Icon image to display on the button

### constructor:JButton(java.lang.String) [NONE]
- #### JButton
      @ConstructorProperties(value="text")
      public JButton(String text)
Creates a button with text. Parameters: `text` - the text of the button

### constructor:JButton(javax.swing.Action) [NONE]
- #### JButton
      public JButton(Action a)
Creates a button where properties are taken from the `Action` supplied. Parameters: `a` - the `Action` used to specify the new button Since: 1.3

### constructor:JButton(java.lang.String, javax.swing.Icon) [NONE]
- #### 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:updateUI() [NONE]
- #### updateUI
      public void updateUI()
Resets the UI property to a value from the current look and feel. Overrides: `updateUI` in class `AbstractButton` See Also: `JComponent.updateUI()`

### method:getUIClassID() [NONE]
- #### getUIClassID
      public String getUIClassID()
Returns a string that specifies the name of the L&F class that renders this component. Overrides: `getUIClassID` in class `JComponent` Returns: the string "ButtonUI" See Also: `JComponent.getUIClassID()`, `UIDefaults.getUI(javax.swing.JComponent)`

### method:isDefaultButton() [NONE]
- #### isDefaultButton
      public boolean isDefaultButton()
Gets the value of the `defaultButton` property, which if `true` means that this button is the current default button for its `JRootPane`. Most look and feels render the default button differently, and may potentially provide bindings to access the default button. Returns: the value of the `defaultButton` property See Also: `JRootPane.setDefaultButton(javax.swing.JButton)`, `isDefaultCapable()`

### method:isDefaultCapable() [NONE]
- #### isDefaultCapable
      public boolean isDefaultCapable()
Gets the value of the `defaultCapable` property. Returns: the value of the `defaultCapable` property See Also: `setDefaultCapable(boolean)`, `isDefaultButton()`, `JRootPane.setDefaultButton(javax.swing.JButton)`

### method:setDefaultCapable(boolean) [NONE]
- #### setDefaultCapable
      public void setDefaultCapable(boolean defaultCapable)
Sets the `defaultCapable` property, which determines whether this button can be made the default button for its root pane. The default value of the `defaultCapable` property is `true` unless otherwise specified by the look and feel. Parameters: `defaultCapable` - `true` if this button will be capable of being the default button on the `RootPane`; otherwise `false` See Also: `isDefaultCapable()`

### method:removeNotify() [NONE]
- #### removeNotify
      public 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. Overrides: `removeNotify` in class `AbstractButton` See Also: `JComponent.registerKeyboardAction(java.awt.event.ActionListener, java.lang.String, javax.swing.KeyStroke, int)`

### method:paramString() [NONE]
- #### paramString
      protected String paramString()
Returns a string representation of this `JButton`. 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`. Overrides: `paramString` in class `AbstractButton` Returns: a string representation of this `JButton`

### method:getAccessibleContext() [NONE]
- #### getAccessibleContext
      public AccessibleContext getAccessibleContext()
Gets the `AccessibleContext` associated with this `JButton`. For `JButton`s, the `AccessibleContext` takes the form of an `AccessibleJButton`. A new `AccessibleJButton` instance is created if necessary. Specified by: `getAccessibleContext` in interface `Accessible` Overrides: `getAccessibleContext` in class `Component` Returns: an `AccessibleJButton` that serves as the `AccessibleContext` of this `JButton`