driver = com.mysql.jdbc.Driver
url = jdbc:mysql://localhost:3306/TestingSystem
user = root
password = admin
charset = utf8

private void connect(){
    String urlDB = properties.getProperty("url");
    connectionInfo.put("user", properties.getProperty("user"));
    connectionInfo.put("password", properties.getProperty("password"));
    connectionInfo.put("charSet", properties.getProperty("charset"));
    try {
        Class.forName(properties.getProperty("driver"));
    } catch (ClassNotFoundException e) {
        log.error("Not found driver for data base");
    }
    try {
        connection = DriverManager.getConnection(urlDB, connectionInfo);
        if(connection == null) {
            log.error("Connection with data base isn't open.");
        } else {
            log.info("Connection with data base is open.");
        }
    } catch (SQLException e) {
        log.error("Error connection with data base");
    }
}

UPDATE basic_data SET data = 'Пример'
WHERE name = 'Пример'


INSERT INTO test_data_questions(input_data, output_data, id_question)
VALUES('Пример', 'Пример', (SELECT q.id FROM questions q WHERE q.title = 'Пример'))

public List<TestData> getTestDataForQuestion(String nameQuestion){
    List<TestData> testDataForQuestion = new ArrayList<>();
    String query = "SELECT input_data, output_data " +
                   "FROM test_data_questions " +
                   "WHERE id_question = (SELECT q.id FROM questions q WHERE q.title = '" + nameQuestion + "')";
    ResultSet resultQuery = dataBase.execSelect(query);
    try {
        while(resultQuery.next()){
            String inputData = resultQuery.getString("INPUT_DATA");
            String outputData = resultQuery.getString("OUTPUT_DATA");
            TestData testData = new TestData(inputData, outputData);
            testDataForQuestion.add(testData);
        }
    } catch (SQLException e) {
        log.error("Error is reading test data for Question. Query: " + query);
    }
    return testDataForQuestion;
}