/* * Cart3.java Session tracking with Servlet Session Tracking API. */ import java.io.*; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; public class Cart3 extends HttpServlet { public void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException { doGet( request, response ); } public void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException { HttpSession sess = request.getSession(); List cart = (List) sess.getAttribute("cart"); if( cart == null ) { cart = new ArrayList(); sess.setAttribute( "cart", cart ); } response.setContentType( "text/html" ); PrintWriter out = response.getWriter(); out.print( "" ); out.println( "Shopping Cart (III)" ); out.println( "" ); String m = request.getParameter("item"); if( m != null ) cart.add( m ); out.println( "" ); for( String i : cart ) out.println( "" ); out.println( "
" + i + "
" ); out.println( "
"); out.println( "
"); out.println( ""); out.println( "
"); out.println( "" ); out.println( "" ); } } // end of class Cart3