if (!ck.toByteArray ().equals (toByteArray ()))
if (! Arrays.equals (ck.toByteArray (), toByteArray ()))
  public boolean equals (Object obj)  {    if (! (obj instanceof CollationKey))      return false;    CollationKey ck = (CollationKey) obj;    if (ck.collator != collator)      return false;    if (!ck.getSourceString ().equals (getSourceString ()))      return false;    if (!ck.toByteArray ().equals (toByteArray ()))      return false;    return true;  }