get count from bigquery

public String query(String query) {
        try {
            File file = new File("src/main/resources/credentials/gcp_key.json");
            String absolutePath = file.getAbsolutePath();
            Path keyPath = Paths.get(absolutePath);

            BigQuery bigquery = BigQueryOptions.newBuilder()
                .setCredentials(
                    ServiceAccountCredentials.fromStream(new FileInputStream(keyPath.toFile()))
                ).build().getService();

            QueryJobConfiguration queryConfig = QueryJobConfiguration.newBuilder(query).build();

            TableResult results = bigquery.query(queryConfig);

            Iterable<FieldValueList> iterables = results.iterateAll();

            String count = "";
            for (FieldValueList row : iterables) {
                for (FieldValue v : row) {
                    System.out.println("Query performed successfully.");
                    count = v.getValue().toString();
                }
            }
//            Integer count = ((FluentIterable) iterables).toList().get(0).get(0).value;
//            iterables
//                .forEach(
////                        row.get(0).value
//                    row -> row.forEach(
//                        val -> {
//                            System.out.printf("%s,", val.toString());
//                        }
//                    )
//                );
            return count;
        } catch (BigQueryException | InterruptedException | IllegalArgumentException | IOException e) {
            System.out.println("Query not performed \n" + e.toString());
            return "";
        }
    }