The Java Developers Almanac 1.4

e771. Determining If a JRadioButton Component Is Selected

    // This method returns true if btn is selected; false otherwise
    public static boolean isSelected(JRadioButton btn) {
        DefaultButtonModel model = (DefaultButtonModel)btn.getModel();
        return model.getGroup().isSelected(model);
    }

Related Examples

e768. Creating a JRadioButton Component
e769. Selecting a JRadioButton Component in a Button Group
e770. Determining the Selected JRadioButton in a Button Group
e772. Adding an Icon to the Label of a JRadioButton Component
e773. Customizing the Icons in a JRadioButton Component

See also: Actions    JButton    JCheckBox    JComboBox    JDesktop and JInternalFrame    JFrame, JWindow, JDialog    JLabel    JList    JProgressBar    JScrollPane    JSlider    JSpinner    JSplitPane    JTabbedPane    JToolBar    Keystrokes and Input Maps    Layout    Look and Feel    Menus    Progress Monitor    The Screen    Tool Tips    UI Default Values

© 2002 Addison-Wesley.