Java

Get the Size of an Attachment

Demonstrates the Chilkat Email.GetAttachmentSize method, which returns the size in bytes of the attachment at a given zero-based index, or -1 if the index does not identify an existing attachment. This example adds an attachment and prints its size.

Background: The size reported is that of the attachment's actual (decoded) data, not its larger Base64-encoded form on the wire. Knowing per-attachment sizes is handy for enforcing limits, showing a size next to each attachment in a UI, or deciding whether to save or skip a large part. The -1 sentinel is how the method signals an out-of-range index rather than a zero-length attachment.

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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[])
  {
    //  Demonstrates the GetAttachmentSize method, which returns the size in bytes of the
    //  attachment at the given zero-based index.  It returns -1 if the index does not identify
    //  an existing attachment.

    CkEmail email = new CkEmail();
    email.put_Subject("Attachment size");

    email.AddStringAttachment("notes.txt","Some notes for the attachment.");

    //  Get the size in bytes of the first attachment (index 0).
    int sz = email.GetAttachmentSize(0);
    System.out.println("Attachment 0 size (bytes) = " + sz);
  }
}