Vending Machine (Preamble)

<%@ page import=“java.util.*” %>

<%!

String [] snacks = {“Chips”, “Popcorn”, “Peanuts”, . . . } ;

%>

<%

Vector selections = (Vector) session.getAttribute(“selections”) ;

if (selections == null) {

selections = new Vector() ;

session.setAttribute(“selections”, selections) ;

}

String selection = request.getParameter(“selection”) ;

if (selection != null)

selections.addElement(selection) ;

%>

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