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    String userpass = request.getParameter("password");
    DataBase db = new DataBase();
    String sql = "SELECT username,userpass from admin WHERE  username ='"+username+"' and userpass='"+userpass+"' ";
    ResultSet rs=db.executeQuery(sql);
   
    if(rs.next()){
      flag = true ;
    }
    db.close();
    }catch(Exception e ){}
    if(flag){
  %>
    <jsp:forward page="ad_index.jsp"/>
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    }else{
  %>
    <jsp:forward page="login.htm"/>
  <% 
    }
  %>
  </body>
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