(Java) Unpack HTML Email to Files

Unpacks an HTML email into an HTML file and related files (images and style sheets). The links within the HTML are updated to point to the files unpacked and saved to disk.

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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[])
  {
    CkEmail email = new CkEmail();

    boolean success;
    success = email.LoadEml("qa_data/eml/happyHour.eml");
    if (success != true) {
        System.out.println(email.lastErrorText());
        return;
        }

    // Is this an HTML email?
    if (email.HasHtmlBody() == true) {

        // Unpack the HTML to files.  The image and css URLs
        // in the HTML are modified to point to the files extracted to disk.
        String unpackDir = "qa_output/emails";
        String partsSubdir = "images";
        String htmlFilename = "happyHour.html";
        success = email.UnpackHtml(unpackDir,htmlFilename,partsSubdir);
        if (success != true) {
            System.out.println(email.lastErrorText());
            return;
            }

        System.out.println("Success.");
        }
  }
}