@Override public final boolean equals(Object obj) { if (this == obj) { return true; } if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } final PessoaFisica other = (PessoaFisica) obj; if (cpf == null) { if (other.cpf != null) { return false; } } else if (!cpf.equals(other.cpf)) { return false; } return true; }