@Override
	public boolean equals(Object obj) {
		if (this == obj) return true;
		if (obj == null) return false;
		if (getClass() != obj.getClass()) return false;
		DownloadRecord other = (DownloadRecord) obj;
		if (fileLength != other.fileLength) return false;
		if (threadCount != other.threadCount) return false;
		if (url == null) {
			if (other.url != null) return false;
		} else if (!url.equals(other.url))
			return false;
		return true;
	}