Package Summary Overview Summary

### class:ButtonGroup [NONE]
- All Implemented Interfaces: Serializable
      public class ButtonGroup
      extends Object
      implements Serializable
This class is used to create a multiple-exclusion scope for a set of buttons. Creating a set of buttons with the same `ButtonGroup` object means that turning "on" one of those buttons turns off all other buttons in the group. A `ButtonGroup` can be used with any set of objects that inherit from `AbstractButton`. Typically a button group contains instances of `JRadioButton`, `JRadioButtonMenuItem`, or `JToggleButton`. It wouldn't make sense to put an instance of `JButton` or `JMenuItem` in a button group because `JButton` and `JMenuItem` don't implement the selected state. Initially, all buttons in the group are unselected. For examples and further information on using button groups see How to Use 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`. Since: 1.2

### field:buttons [NONE]
- #### buttons
      protected Vector<AbstractButton> buttons

### constructor:ButtonGroup() [NONE]
- #### ButtonGroup
      public ButtonGroup()
Creates a new `ButtonGroup`.

### method:add(javax.swing.AbstractButton) [NONE]
- #### add
      public void add(AbstractButton b)
Adds the button to the group. Parameters: `b` - the button to be added

### method:remove(javax.swing.AbstractButton) [NONE]
- #### remove
      public void remove(AbstractButton b)
Removes the button from the group. Parameters: `b` - the button to be removed

### method:clearSelection() [NONE]
- #### clearSelection
      public void clearSelection()
Clears the selection such that none of the buttons in the `ButtonGroup` are selected. Since: 1.6

### method:getElements() [NONE]
- #### getElements
      public Enumeration<AbstractButton> getElements()
Returns all the buttons that are participating in this group. Returns: an `Enumeration` of the buttons in this group

### method:getSelection() [NONE]
- #### getSelection
      public ButtonModel getSelection()
Returns the model of the selected button. Returns: the selected button model

### method:setSelected(javax.swing.ButtonModel, boolean) [NONE]
- #### setSelected
      public void setSelected(ButtonModel m,
                              boolean b)
Sets the selected value for the `ButtonModel`. Only one button in the group may be selected at a time. Parameters: `m` - the `ButtonModel` `b` - `true` if this button is to be selected, otherwise `false`

### method:isSelected(javax.swing.ButtonModel) [NONE]
- #### isSelected
      public boolean isSelected(ButtonModel m)
Returns whether a `ButtonModel` is selected. Parameters: `m` - an isntance of `ButtonModel` Returns: `true` if the button is selected, otherwise returns `false`

### method:getButtonCount() [NONE]
- #### getButtonCount
      public int getButtonCount()
Returns the number of buttons in the group. Returns: the button count Since: 1.3