Consider the following two classes:

@Service
public class WeatherForecastService {

    private Thermometer thermometer;

    @Autowired
    public WeatherForecastService(Thermometer thermometer) {
        this.thermometer = thermometer;
    }

    @Scheduled(fixedDelay = 10000)
    public void takeTemperatureMeasurement() {
        thermometer.measure();
    }   
}

@Component
@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class FakeThermometer implements Thermometer {

    @Override
    public int measure() { return 10; };
}

Supposing Spring uses component scanning to discover beans, select the statements that are correct.

(Select all acceptable answers.)

Instantiation of WeatherForecastService will fail because Thermometer is an interface and not a class.
Instantiation of WeatherForecastService will fail, because only @Repository beans may be injected into @Service beans.
Automatic execution of takeTemperatureMeasurement() every 10 seconds can be enabled by annotating the Spring configuration class with @EnableScheduling.
Automatic execution of takeTemperatureMeasurement() every 10 seconds can be enabled by using <task:annotation-driven/> in XML configuration.
A new instance of the FakeThermometer class will be created each time the takeTemperatureMeasurement() method is executed.
   

Tags
Java Spring Components Public
Hard

5min

Score Distribution
# of candidates
0-33%
34-66%
67-100%
Score
Would you like to see our other questions?

We have 750+ premium hand-crafted questions for 50+ job skills and 15+ coding language. We prefer questions with small samples of actual work over academic problems or brain teasers.

Visit our question library

Private Concierge

Send us an email with an explanation of your testing needs and a list of candidates. We will create an appropriate test, invite your candidates, review their results, and send you a detailed report.

Contact Private Concierge

Would you like to see our tests? The following tests contain Java Spring related questions:
On the TestDome Blog

Screening Applicants: The Good, the Bad and the Ugly

Since we’re all biased and we use incorrect proxies, why not just outsource hiring to experts or recruitment agencies? After all, they’ve been screening people for many years, so they must know how to do it right?

Not really. I was surprised to discover that many experts disagree with each other. Everybody praises their pet method and criticizes the others. Many of these methods look legitimate, but are based on...