public void alterarNotificacao(Notificacao notificacao) { PreparedStatement ps = null; try { conexao = ConexaoFactory.conexaoHeroku(); String sql = "UPDATE SET islida = ? " + " FROM notificacao WHERE cd_notificacao = ? "; ps = conexao.prepareStatement(sql); ps.setBoolean(1, notificacao.isLida()); ps.setInt(2, notificacao.getCdNotificacao()); ps.executeUpdate(); } catch (Exception e) { e.printStackTrace(); } finally { try { ps.close(); conexao.close(); } catch (SQLException ex) { ex.printStackTrace(); } } }