I am sending a parameter string value, a french character "ç", to my web service in JAVA thorough GET method. In java, it is shown in UTF-8 encoded form as %C3%A7.
How can I convert it back to the same french character during the execution itself?
Tha answer you nned is the one liked by @Joe; you need to "convert" the query string:
String result = java.net.URLDecoder.decode(url, "UTF-8");
It's not a matter of UTF-8 econding, rather a url enconding one.
A side note: in the comments you stated that you are passing the data via GET, if the semantic of the web service is to modify the data I suggest to use the POST method.