@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    if (!super.equals(o)) return false;
    Jar that = (Jar)o;
    if (!name.equals(that.name)) return false;
    return true;
  }
@Override
  public boolean equals(Object o)