qr=ss.createQuery("update Adddata set std_name='" +
request.getParameter("std_name") + "',std_sex='" +
request.getParameter("std_sex")+ "',std_mob='" +
request.getParameter("std_mob")+ "',std_email='" +
request.getParameter("std_email")+ "',std_course='" +
request.getParameter("std_course")+ "',std_add='" +
request.getParameter("std_add")+ "',std_fname='" +
request.getParameter("std_fname")+ "',std_date='" +
request.getParameter("std_date")+"'
where stid ='"+request.getParameter("std_id")+"'");