public void delete(String name) throws IOException {
  if (name.equalsIgnoreCase(VERSION)) {
    version=V1;
  }
 else {
    throw new IOException("Attribute name not recognized by " + "CertAttrSet: CertificateVersion.");
  }
}

public void delete ( String name ) throws IOException { if ( name . equalsIgnoreCase ( VERSION ) ) { version = V1 ; } else { throw new IOException ( "Attribute name not recognized by " + "CertAttrSet: CertificateVersion." ) ; } }
delete the attribute value .
