e771. determining if a jradiobutton component is selected.txt

来自「这里面包含了一百多个JAVA源文件」· 文本 代码 · 共 6 行

// 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);
    }