@Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (getClass() != obj.getClass())
      return false;
    Tick other = (Tick) obj;
    if (demoname == null) {
      if (other.demoname != null)
        return false;
    } else if (!demoname.equals(other.demoname))
      return false;
    if (end != other.end)
      return false;
    if (start != other.start)
      return false;
    return true;
  }