public int hashCode(){
  if (myhash == -1) {
    myhash=timestamp.hashCode() + signerCertPath.hashCode();
  }
  return myhash;
}

public int hashCode ( ) { if ( myhash == - 1 ) { myhash = timestamp . hashCode ( ) + signerCertPath . hashCode ( ) ; } return myhash ; }
returns the hash code value for this timestamp . the hash code is generated using the date and time of the timestamp and the tsa ' s certificate path .
