Redirecting to a page using restful methods?

I've created a page which asks user to fill some form fields and when he submits, the form is sent to a Restful method which you can see below:

@POST
@Path("addUser")
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public void addUser(@FormParam("username") String username,
        @FormParam("password") String password,
        @FormParam("id") String id,
        @FormParam("group_name") String groupName,
        @FormParam("authority_name") String authorityName,
        @FormParam("authority_id") String authorityId
        )
{
    //Something will be done here
}

How can I redirect the user at the end of this function to (let's say) index.jsp?