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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Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the SetAttachmentFilename method, which changes the filename of the
    //  attachment at the given zero-based index.

    CkEmail email = new CkEmail();
    email.put_Subject("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).
    success = email.SetAttachmentFilename(0,"newname.txt");
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

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