e769. selecting a jradiobutton component in a button group.txt

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// To create a radio button and button group,
    // see e768 Creating a JRadioButton Component
    
    // Select the radio button; the currently selected radio button is deselected.
    // This operation does not cause any action events to be fired.
    ButtonModel model = radioButton.getModel();
    group.setSelected(model, true);