Package Summary Overview Summary

### class:JRadioButton [NONE]
- All Implemented Interfaces: ImageObserver, ItemSelectable, MenuContainer, Serializable, Accessible, SwingConstants
      public class JRadioButton
      extends JToggleButton
      implements Accessible
An implementation of a radio button -- an item that can be selected or deselected, and which displays its state to the user. Used with a `ButtonGroup` object to create a group of buttons in which only one button at a time can be selected. (Create a ButtonGroup object and use its `add` method to include the JRadioButton objects in the group.) Note: The ButtonGroup object is a logical grouping -- not a physical grouping. To create a button panel, you should still create a `JPanel` or similar container-object and add a `Border` to it to set it off from surrounding components. 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 further documentation. 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 See Also: `ButtonGroup`, `JCheckBox`

### constructor:JRadioButton() [NONE]
- #### JRadioButton
      public JRadioButton()
Creates an initially unselected radio button with no set text.

### constructor:JRadioButton(javax.swing.Icon) [NONE]
- #### JRadioButton
      public JRadioButton(Icon icon)
Creates an initially unselected radio button with the specified image but no text. Parameters: `icon` - the image that the button should display

### constructor:JRadioButton(javax.swing.Action) [NONE]
- #### JRadioButton
      public JRadioButton(Action a)
Creates a radiobutton where properties are taken from the Action supplied. Parameters: `a` - an `Action` Since: 1.3

### constructor:JRadioButton(javax.swing.Icon, boolean) [NONE]
- #### JRadioButton
      public JRadioButton(Icon icon,
                          boolean selected)
Creates a radio button with the specified image and selection state, but no text. Parameters: `icon` - the image that the button should display `selected` - if true, the button is initially selected; otherwise, the button is initially unselected

### constructor:JRadioButton(java.lang.String) [NONE]
- #### JRadioButton
      public JRadioButton(String text)
Creates an unselected radio button with the specified text. Parameters: `text` - the string displayed on the radio button

### constructor:JRadioButton(java.lang.String, boolean) [NONE]
- #### JRadioButton
      public JRadioButton(String text,
                          boolean selected)
Creates a radio button with the specified text and selection state. Parameters: `text` - the string displayed on the radio button `selected` - if true, the button is initially selected; otherwise, the button is initially unselected

### constructor:JRadioButton(java.lang.String, javax.swing.Icon) [NONE]
- #### JRadioButton
      public JRadioButton(String text,
                          Icon icon)
Creates a radio button that has the specified text and image, and that is initially unselected. Parameters: `text` - the string displayed on the radio button `icon` - the image that the button should display

### constructor:JRadioButton(java.lang.String, javax.swing.Icon, boolean) [NONE]
- #### JRadioButton
      public JRadioButton(String text,
                          Icon icon,
                          boolean selected)
Creates a radio button that has the specified text, image, and selection state. Parameters: `text` - the string displayed on the radio button `icon` - the image that the button should display `selected` - if `true`, the button is initially selected otherwise, the button is initially unselected

### method:updateUI() [NONE]
- #### updateUI
      public void updateUI()
Resets the UI property to a value from the current look and feel. Overrides: `updateUI` in class `JToggleButton` See Also: `JComponent.updateUI()`

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

### method:paramString() [NONE]
- #### paramString
      protected String paramString()
Returns a string representation of this JRadioButton. 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 `JToggleButton` Returns: a string representation of this JRadioButton.

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