Default Java Charset

Question

Hello:
I have a problem sending mail from a web application; when it's run from my desktop it sends mail OK, but when it's run from the server it sends messages with accents ant other signs garbled (in the body and in the Subject line).
I've been investigating and saw that the difference between the same message sent from the two machines is that one is encoded with "quoted-printable" when the other is "7bit". After more investigations I think I compose the mail correctly, but then I used "MimeUtility.getDefaultJavaCharset()" and discovered that my machine gets "ISO-8859-15" while the server gets "US-ASCII". Both are linux machines, and they have the "es_ES@euro" locale set. I've discarded too the encoding of the text file from which I get the text of the body, because I test always with three files (they have the same content, but one is encoded in UTF8, other in ISO-8859-1 and the other in ISO-8859-15).
So the problem seems to me that is reading the file; if JVM in the server runs in US-ASCII meybe it can't read the file correctly, so it won't get correctly encoded in the mail no matter what I do.
The question is: How can I change the Java Default Charset in the server? Or, how can I read the file correctly no matter what the Java Default Charset is?
Thank you in advance.

Answer 1

Well, at least I can send now the text correctly encoded, although it now encodes it with "base64" instead of "quoted-printable", which is what I intended... Anyway, here's the code I use to read the text file forcing the charset:
BufferedReader lectorFichero=new BufferedReader(new InputStreamReader(new FileInputStream(nombreFichero),"ISO-8859-15"));
StringBuffer bufferTextoFichero=new StringBuffer();
int i;
while((i=lectorFichero.read())!=-1) bufferTextoFichero.append((char)i);
lectorFichero.close();
String textoFichero=bufferTextoFichero.toString();(Thanks to Dr. Heinz M. Kabutz; http://www.roseindia.net/javatutorials/using_unicode_variable_names.shtml)