@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + id;
		result = prime * result + ((nome == null) ? 0 : nome.hashCode());
		result = prime * result + ((obs == null) ? 0 : obs.hashCode());
		long temp;
		temp = Double.doubleToLongBits(preco);
		result = prime * result + (int) (temp ^ (temp >>> 32));
		return result;
	}