Understanding encoding

[AlbertGM]

Hi all,

Part of my code have to send an email written in Spanish or Catalan, depending of language selected. Both languages have accents and other non-ASCII (7bit) printable characters. That's why I use Unicode to try to avoid printing wrong characters. This is the body (in spanish):

String body = "Se ha recibido la respuesta a la solicitud de tasaci\u00F3n.\n" +
				"Oficina: " + objDatosTasacion.getDatosOficina().getCentro() + "\n" +
				"C\u00F3digo tasaci\u00F3n: " + codigoCompuesto + "\n" +
				"Empresa: " + nombreTasadora + "\n" +
				"Cliente: " + nombreCliente;

To send email, this does not works:

BodyPart texto = new MimeBodyPart();
texto.setText(new String(body.getBytes(),"UTF-8"));

Which generates:

Se ha recibido la respuesta a la solicitud de tasaci?.
Oficina: 2400
C?igo tasaci?: 2400-03-00014
Empresa: Tinsa
Cliente: Pepito Gcia.

However, next code works, and print unicode characters successfully:

BodyPart texto = new MimeBodyPart();
texto.setText(new String(body.getBytes()));

I just wonder to know why first method does not works if I'm using UTF-8, which is a representation of Unicode, and the second one works. I need to understand how to deal with such characters, because they make me crazy

The OS is IBM-AIX and Java file is created using vi. I'm not sure the encoding used to create java file by vi. Compiler is IBM-JDK 1.5.0.

Thanks a lot in advance,

Albert.