title: struggling with sshj example ('exec') : Could not verify `ssh-rsa` host key with fingerprint
body: <p>I'm trying to write a java program that will connect via ssh and do some stuff on a server at work (redhat linux).  My box is windows.  I read about sshj and I'm trying to get the example to work.  I've worked through most of the dependencies and now I have an error dealing with public/private keys and unfortunately I don't know much there either (yes, it's a perfect storm of newbie-ness!).  Here's the error: </p>
  
  <p>Exception in thread "main" net.schmizz.sshj.transport.TransportException: [HOST_KEY_NOT_VERIFIABLE] Could not verify <code>ssh-rsa</code> host key with fingerprint <code>5f:d6:94:00:9e:ec:7e:34:6d:d0:d3:76:df:5e:dd:3d</code> for <code>myserver</code> on port 22</p>
  
  <p>Here's the code:</p>
  
  <pre><code>import net.schmizz.sshj.SSHClient;
  import net.schmizz.sshj.common.IOUtils;
  import net.schmizz.sshj.connection.channel.direct.Session;
  import net.schmizz.sshj.connection.channel.direct.Session.Command;
  
  import java.io.IOException;
  import java.util.concurrent.TimeUnit;
  
  /** This examples demonstrates how a remote command can be executed. */
  public class sshBuddy {
  
      public static void main(String... args)
              throws IOException {
          final SSHClient ssh = new SSHClient();
          ssh.loadKnownHosts();
          //ssh.addHostKeyVerifier("5f:d6:94:00:9e:ec:7e:34:6d:d0:d3:76:df:5e:dd:3d");
  
          ssh.connect("myserver");
          try {
              ssh.authPublickey(System.getProperty("myusername"));
              final Session session = ssh.startSession();
              try {
                  final Command cmd = session.exec("ping -c 1 google.com");
                  System.out.println(IOUtils.readFully(cmd.getInputStream()).toString());
                  cmd.join(5, TimeUnit.SECONDS);
                  System.out.println("\n** exit status: " + cmd.getExitStatus());
              } finally {
                  session.close();
              }
          } finally {
              ssh.disconnect();
          }
      }
  
  }
  </code></pre>
  
  <p>Any help would be appreciated, thanks!</p>