I'm just creating struts application. It has a jsp having two radio buttons. But when i run this applcation. None of the radio buttons are selected Thats fine. But in that user selects both radio buttons. Here problems occur means user should actually select only one at a time. If user select other radio buttons the previos should be unselected.
Have you considered referring to the Struts documentation?
"The attribute name of the bean whose properties are consulted when rendering the current value of this input field. If not specified, the bean associated with the form tag we are nested within is utilized."