try {
        Class.forName("com.mysql.cj.jdbc.Driver");
        connect = DriverManager.getConnection("jdbc:mysql://" + host + "/users?" + "user=" + user + "&password=" + pw );
        statement = connect.createStatement();
        resultSet = statement.executeQuery("select * from account");
        writeResultSet(resultSet);
    } catch (Exception e) {
        throw e;
    } finally {
        close();
    }

Class.forName("com.mysql.cj.jdbc.Driver");
connect = DriverManager.getConnection("jdbc:mysql://" + host + "/users?" + "user=" + user + "&password=" + pw );
preparedStatement = connect.prepareStatement("insert into account values (default, ?, ?)");

int dbAmount = 0;
statement = connect.createStatement();
resultSet = statement.executeQuery("select * from account");
while (resultSet.next()) {
    dbAmount = resultSet.getInt("balance");
}

dbAmount += amount;

preparedStatement.setInt(1, dbAmount);
preparedStatement.setString(2, updatedAt);
preparedStatement.executeUpdate();
} catch (Exception e) {
    throw e;
} finally {
    close();
}

Class.forName("com.mysql.cj.jdbc.Driver");
connect = DriverManager.getConnection("jdbc:mysql://" + host + "/users?" + "user=" + user + "&password=" + pw );
preparedStatement = connect.prepareStatement("update account set balance = ?, updatedAt = ? where id = 1");

        int dbAmount = 0;
        statement = connect.createStatement();
        resultSet = statement.executeQuery("select * from account");
        while (resultSet.next()) {
            dbAmount = resultSet.getInt("balance");
        }

        dbAmount += amount;

        preparedStatement.setInt(1, dbAmount);
        preparedStatement.setString(2, updatedAt);
        preparedStatement.setInt(3, 1);
        preparedStatement.executeUpdate();
    } catch (Exception e) {
        throw e;
    } finally {
        close();
    }

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/users?user=********&password=********
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.nsoft.serviceb.DbConnection.writeDataBase(DbConnection.java:39)
at com.nsoft.serviceb.ServiceB.insertInDb(ServiceB.java:73)
at com.nsoft.serviceb.ServiceB.lambda$receiveData$0(ServiceB.java:55)
at com.rabbitmq.client.impl.recovery.AutorecoveringChannel$2.handleDelivery(AutorecoveringChannel.java:577)
at com.rabbitmq.client.impl.ConsumerDispatcher$5.run(ConsumerDispatcher.java:149)
at com.rabbitmq.client.impl.ConsumerWorkService$WorkPoolRunnable.run(ConsumerWorkService.java:104)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)