title: "Failure to find com.aspose:aspose-email:jar:5.3.0.0" when running GroupDocs sample "Java Viewer - Sample Dropwizard"
body: <p>I'm trying to run this sample "GroupDocs Java Viewer - Sample Dropwizard" 
  download it from <a href="http://groupdocs.com/Community/files/9/java-libraries/groupdocs_viewer_for_java/category1004.aspx" rel="nofollow">here</a>  </p>
  
  <p>it need these jar files:</p>
  
  <ul>
  <li>aspose-email-5.3.0.0.jar  </li>
  <li>aspose-imaging-2.9.0.jar  </li>
  <li>aspose-words-15.6.0.jar  </li>
  <li>aspose-slides-15.5.1.jar  </li>
  </ul>
  
  <p>I can not find them here maven.aspose.com</p>
  
  <p>I found jars with jdk16 but still have the same error:</p>
  
  <blockquote>
    <p>Failed to execute goal on project groupdocs-viewer-dropwizard: Could
    not resolve dependencies for project
    com.groupdocs.samples:groupdocs-viewer-dropwizard:jar:2.12.0: The
    following artifacts could not be resolved:
    com.aspose:aspose-email:jar:5.3.0.0,
    com.aspose:aspose-imaging:jar:2.9.0,
    com.aspose:aspose-slides:jar:15.5.1,
    com.aspose:aspose-words:jar:15.6.0: Failure to find
    com.aspose:aspose-email:jar:5.3.0.0 in
    <a href="http://repository.springsource.com/maven/bundles/external" rel="nofollow">http://repository.springsource.com/maven/bundles/external</a> was cached
    in the local repository, resolution will not be reattempted until the
    update interval of com.springsource.repository.bundles.external has
    elapsed or updates are forced -> [Help 1]</p>
  </blockquote>