public boolean equals(Object obj) {
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Turma other = (Turma) obj;
		if (this.getDisciplina().equals(other.getDisciplina()) ){
			if (this.getNumero() == other.getNumero()){
				return true;
		 	} else{
		 		return false;
		 	}
		} else {
			return false;
		}
		
	}