Javamail changing charset of subject line

You should use setSubject(String subject, String charset) which is a convenient function for this purpose.

Session session=Session.getDefaultInstance(new Properties());
MimeMessage mimeMsg= new MimeMessage(session);
String subject="Herr Müller reist nach \u0141\u00f3d\u017a.";
mimeMsg.setSubject(subject,"utf-8");
System.out.println(subject);
System.out.println(mimeMsg.getHeader("Subject")[0]);
 

 

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