Java

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
        // Content-Type header field for the attachment at the given zero-based index.

        Email email = new Email();
        email.setSubject("Set attachment charset");

        email.addStringAttachment("notes.txt", "Some notes.");

        // Set the charset of the first attachment (index 0) to utf-8.
        try {
            email.setAttachmentCharset(0, "utf-8");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // The attachment's Content-Type now includes charset="utf-8".
        System.out.println(email.getMime());
    }
}