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.

Chilkat Java Downloads

Download Chilkat for Java

Chilkat2 Java

import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // 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.

        Email email = new Email();
        email.setSubject("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);
    }
}