Java
Create multipart/alternative MIME

Demonstrates how to create a multipart/alternative MIME structure using the NewMultipartAlternative method.
Chilkat Java Downloads

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;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Start with an empty MIME object...
    CkMime mime = new CkMime();

    // Initialize it as multipart/alternative.
    mime.NewMultipartAlternative();

    // Create a text/plain part.
    CkMime ptMime = new CkMime();
    ptMime.SetBodyFromPlainText("This is the plain text body.");
    System.out.println(ptMime.getMime());
    System.out.println("****");

    // The text/plain part looks like this:

    // 	Content-Type: text/plain
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	This is the plain text body.

    // Create a text/HTML part.
    CkMime htmlMime = new CkMime();
    htmlMime.SetBodyFromHtml("<html><body><p>This is the <b>HTML body</b></p></body></html>");
    System.out.println(htmlMime.getMime());
    System.out.println("****");

    // The text/html part looks like this:

    // 	Content-Type: text/html
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	<html><body><p>This is the <b>HTML body</b></p></body></html>

    // Add both parts as children of the multipart/alternative
    mime.AppendPart(ptMime);
    mime.AppendPart(htmlMime);
    System.out.println(mime.getMime());

    // This the result.  The boundary string was automatically generaetd.

    // 	Content-Type: multipart/alternative; boundary="------------080803090906030708030908"
    // 
    // 	--------------080803090906030708030908
    // 	Content-Type: text/plain
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	This is the plain text body.
    // 	--------------080803090906030708030908
    // 	Content-Type: text/html
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	<html><body><p>This is the <b>HTML body</b></p></body></html>
    // 	--------------080803090906030708030908--
  }
}