The
JRadioButton component provides a visually selectable
button with mutually exclusive behaviour within a
ButtonGroup.
A series of radio buttons can be used to provide options to the user,
where the user can only select one of the available options. The state
of the button is provided by the superclass,
JToggleButton.
JRadioButton adds the additional behaviour, that if two
or more radio buttons are grouped together, the selection of one implies
the deselection of the other buttons within the group.
Buttons are grouped by adding each instance to a
ButtonGroup.
The existence of such a grouping is not reflected visually, so other means
should be used to denote this. For instance, the grouped buttons can be placed
within the same panel, possibly with an appropriate border to denote
the connection between the components.
JRadioButton
public JRadioButton()
Constructs an unselected radio button with no text or icon.
JRadioButton
public JRadioButton(String text)
Constructs an unselected radio button using the supplied text
and no icon.
JRadioButton
public JRadioButton(String text,
boolean selected) Constructs a radio button with the supplied text and state.
text - the text to use.selected - if true, the radio button is initially in the
selected state. Otherwise, the button is unselected.
JRadioButton
public JRadioButton(String text,
Icon icon) Constructs an unselected radio button with the supplied text
and icon.
text - the text to use.icon - the icon to use.
JRadioButton
public JRadioButton(String text,
Icon icon,
boolean selected) Constructs a radio button with the supplied text, icon and state.
text - the text to use.icon - the icon to use.selected - if true, the radio button is initially in the
selected state. Otherwise, the button is unselected.
JRadioButton
public JRadioButton(Action a)
Constructs a radio button using the labelling, state
and icon specified by the supplied action.
a - the action to use to define the properties of the button.
JRadioButton
public JRadioButton(Icon icon)
Constructs an unselected radio button with the supplied icon
and no text.
JRadioButton
public JRadioButton(Icon icon,
boolean selected) Constructs a radio button with the supplied icon and state.
icon - the icon to use.selected - if true, the radio button is initially in the
selected state. Otherwise, the button is unselected.
JRadioButton.java --
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