By default, struts’s html radio tag do not allow you to make a radio to be selected as they have no “selected” property or something
<html:radio property="gender" value="F" />Male <html:radio property="gender" value="M"/>Female
To make a radio button to be selected on load, set the value that you want to be selected in your action form reset method
public void reset(ActionMapping mapping, HttpServletRequest request) { super.reset(mapping, request); gender= "F"; }