Getting index from a select object?

I have the following selectbox in my jsp page:

<select name="myNumber">
<option value="1">One
<option value="2">Two
<option value="3">Three
</select>

<%
String myNumber = request.getParameter("myNumber");
int n = Integer.parseInt(myNumber);

%>

With this javacode I am able to store the index of the option choosen from
the select object, in n.

But I think its confusing that converting the name of an option into a int
gives its corresponding value.

Normally that would throw a NumberFormatException:

String z = "Peter";
int k = Integer.parseInt(z);

throws exception.

How can it be legal to convert String "myNumber" into an int?



.

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