[Advanced-java] Sensitive Data -> String getParameter(String) Alternative

[Nikolaos Giannopoulos]

We have an e-commerce app that has credit card info HTTP POSTed to it (over
SSL using https).  The problem is that we currently use
getParameter("card_number") to get say the credit card number BUT this
method returns a String.

Does anyone know how to go about getting HTTP POSTed data (to a servlet) as
a char[] without having it first converted into a String?

--Nikolaos