Question

When a form is passed in to a servlet are empty fields “” or null? So for example in a form where you have First name as a field and last name as a field

Dean – First Name
– Last Name

So what is it registered as in the servlet?

Thanks in Advance

Dean

Answer 1

Simple: If the parameter name is present, but value not, then it’s empty. If the parameter name is absent as well, then it’s null. You normally give fields a name, so it’s present as request parameter and empty fields will be just come in as empty string.