Netscape probs

Question

super quick question.
I have a querystring, which of course works in IE, but problems w/ Netscape.
1. numberformat error
2. urlencode isn't working
String addItemURL =
"/servlet/vdatabase.cart.AddToShoppingCartServlet?"+
"&description=" + rs.getString(java.net.URLEncoder.encode("description"))+
"&quantity=1";
"&price=" + rs.getDouble("price");
%>
// error
java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:397)
// in my request page
int quantity = Integer.parseInt(request.getParameter("quantity"));
double price = Double.parseDouble(request.getParameter("price"));

Answer 1

It appears that the parameter "quantity" is null. There could be several reasons for this, but most likely if it's working in IE and not Netscape, the problem is going to reside in the document containing that form. Something could be causing the quantity parameter to not be set properly.
But, in any situation, when passing a value into Integer.parseInt() (or any other method) when you aren't sure what the value is going to be, then you should always check the data first. Check for null, and check for correct data (ie. no letters when using parseInt()) when appropriate.