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From: Lars Enderin <lars.enderin@telia.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: javax.mail sends mail with broken charset
Date: Thu, 29 May 2014 11:56:39 +0200
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2014-05-29 09:35, Laura Schmidt skrev:
> On 05/29/2014 09:19 AM, Laura Schmidt wrote:
> 
>> the following change to my code solved the problem:
> 
> .... but I don't know why. The new mail reads like this:
> 
> Message-ID:
> <22731732.1.1401347792347.JavaMail.tomcat7@h1403230.stratoserver.net>
> Subject: Test
> MIME-Version: 1.0
> Content-Type: text/plain;charset=utf-8
> Content-Transfer-Encoding: quoted-printable
> Date: Thu, 29 May 2014 09:16:32 +0200 (CEST)
> 
> Test: =C3=A4=C3=9F
> 
> The header is the same, but the code for "δί" changed from "=E4=DF " to
> "=C3=A4=C3=9F".
> 

That looks right. To see the original characters, you need a mail client
or other program that understands quoted-printable. In your first
attempt, you seem to have used ISO-8859-1 as the default encoding. What
default encoding does the JVM assume? Inside Java, the characters are
encoded as 16-bit characters, a form of UTF-16. The encoding only
matters when you write to or from a byte stream or file.

-- 
Lars Enderin