Java

Change the Filename of an Attachment

Demonstrates the Chilkat Email.SetAttachmentFilename method, which changes the filename of the attachment at a given zero-based index. This example adds an attachment and renames it, printing the filename before and after.

Background: The attachment filename is what a recipient sees and what most clients suggest when saving the file. Renaming it is handy when the original name is unclear, unsafe, or generic — for example giving a machine-generated tmp12345 a meaningful name like invoice.pdf before sending.

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

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the SetAttachmentFilename method, which changes the filename of the
        // attachment at the given zero-based index.

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

        email.addStringAttachment("oldname.txt", "Some notes.");
        System.out.println("Filename before: " + email.getAttachmentFilename(0));

        // Change the filename of the first attachment (index 0).
        try {
            email.setAttachmentFilename(0, "newname.txt");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Filename after: " + email.getAttachmentFilename(0));
    }
}