| Attributes |
| Name | Required | Request-time | Type | Description |
| binding | no | true | javax.el.ValueExpression | Using an EL expression, bind the component reference to a bean property, so that the component may be accessed in the bean. |
| converter | no | true | javax.faces.convert.Converter | Converter is an interface describing a Java class that can perform Object-to-String and String-to-Object conversions between model data objects and a String representation of those objects that is suitable for rendering. |
| converterMessage | no | true | java.lang.String | If present, will be used as the text of the converter message, replacing any message that comes from the converter. |
| disabled | no | true | boolean | If true all radio buttons are disabled and no input may be submitted via this component. Default = 'false'. |
| header | no | true | java.lang.String | Header text for the button group. |
| id | no | true | java.lang.String | The component identifier for this component. This value must be unique within the closest parent component that is a naming container. |
| immediate | no | true | boolean | A flag indicating that conversion and validation of this component's value should occur during Apply Request Values phase instead of Process Validations phase. Default = 'false'. |
| indicatorPosition | no | true | java.lang.String | Position of input-required or input-optional indicator relative to the radio buttons. Supported values are "left/right/top/bottom/none". Default = 'bottom'. |
| labelPosition | no | true | java.lang.String | Position of the individual radio button labels relative to their input fields. Supported values are "left/right/top/bottom/none". Default = 'right'. |
| layout | no | true | java.lang.String | Orientation of the options list to be created. Valid values are "pageDirection" (list is laid out vertically), or "lineDirection" (list is laid out horizontally). If not specified, the default value is "lineDirection". Default = 'lineDirection'. |
| optionalIndicator | no | true | java.lang.String | Message indicating that the user is NOT required to provide a submitted value for this input component. |
| rendered | no | true | boolean | Return true if this component (and its children) should be rendered during the Render Response phase of the request processing lifecycle. Default = 'true'. |
| required | no | true | boolean | A flag indicating whether the user required to provide a non-empty submitted value for this component. Default = 'false'. |
| requiredIndicator | no | true | java.lang.String | Message indicating that the user is required to provide a submitted value for this input component. |
| requiredMessage | no | true | java.lang.String | If present, will be used as the text of the validation message for the "required" facility, if the "required" facility is used. |
| style | no | true | java.lang.String | Style of the container element. |
| styleClass | no | true | java.lang.String | Style class of the container element. |
| validator | no | true | javax.el.MethodExpression | MethodExpression representing a validator method that will be called during Process Validations to perform correctness checks on the value of this component. The expression must evaluate to a public method that takes FacesContext, UIComponent, and Object parameters, with a return type of void. |
| validatorMessage | no | true | java.lang.String | If present, will be used as the text of the validator message, replacing any message that comes from the validator. |
| value | no | true | java.lang.Object | The current value of the simple component. The value to be rendered. |
| valueChangeListener | no | true | javax.el.MethodExpression | MethodExpression representing a value change listener method that will be notified when a new value has been set for this input component. The expression must evaluate to a public method that takes a ValueChangeEvent parameter, with a return type of void, or to a public method that takes no arguments with a return type of void. In the latter case, the method has no way of easily knowing what the new value is, but this can be useful in cases where a notification is needed that "this value changed". |