{ valid = new Boolean( DIGEST0.equals(Util.toString(new Whirlpool().digest()))); }
valid = new Boolean(DIGEST0.equals(Util.toString(new Whirlpool().digest())));
  public boolean selfTest()  {    if (valid == null)      {        valid = new Boolean(                            DIGEST0.equals(Util.toString(new Whirlpool().digest())));      }    return valid.booleanValue();  }