title: URLEncoder encode / URLDecoder decode in java (Android)
body: <p>I want to use the URLEncoder/URLDecoder class (java.net.URLEncoder/URLDecoder) in an application and the methods : encode(String s, String enc)/decode(String s, String enc), but I don't know what can be the value of the String argument enc?
  I want to encode/decode in the "x-www-form-urlencoded" MIME content type.
  Thank you for your help.</p>