Add server-side certificate on Windows to retrieve with SOAP

[Marco Smith]

I imported a p12 certificate file to system on Windows 7, on which a Tomcat webapp is running. I try to retrieve certificate with following code (SOAP request):

private KSPrivateKeyEntry getKSPrivateKeyEntry(final String alias, ProtectionParameter passwordProtection) {
  KeyStore keyStore = getKeyStore();
  try {
    if (keyStore.isKeyEntry(alias)) {
      final PrivateKeyEntry entry = (PrivateKeyEntry) keyStore.getEntry(alias, passwordProtection);
      return new KSPrivateKeyEntry(alias, entry);
    }
  } catch (GeneralSecurityException e) {
    throw new DSSException("Unable to retrieve key for alias '" + alias + "'", e);
  }
  return null;
}

Certificate not present in output and I am not sure, how to use alias for a certificate in a proper way.