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Quiz on Spring framework – Part II

By Prabhu Sunderaraman on July 19, 2018 in

Take the second quiz on Spring framework and evaluate yourself. If you’ve missed the first one, here you go.

Question #1: What is the convenient callback class that can be used to format results from DB?

RowMapper. Maps each row to the required format

Question #2: What annotation can be used to mark Dao classes?

All the above. Though it makes sense to use @Repository

Question #3: Which annotation is used to provide declarative transactions?

@Transactional. Apply it on a method or a class

Question #4: Checked Exceptions rollback declaratively managed transactions automatically

True. Declarative transactions have to be explicitly configured to rollback when checked exceptions are thrown

Question #5: Which of the following is true for a final class Customer marked for transaction support?

Fails to generate a proxy as it cannot be extended. Final classes cannot be proxied. So you may have to provide interfaces

Question #6: Injecting a session scoped bean in a singleton bean needs a proxy configuration

Yes. A narrow scoped bean cannot be injected directly in a broad-scoped bean. You have to inject a proxy of the narrow scoped bean.

Question #7: What annotation is used to map a method for PUT request?

@PutMapping. Each HTTP verb has an appropriate mapping annotation

Question #8: What annotation is used to map value to the method argument in http://localhost/factorial/{value}?

@PathVariable

Question #9: In Spring Web App, which of the following acts as a Front Controller?

DispatcherServlet. It receives all the requests to the application.

Question #10: What is the property used to change the port to 9090 in a Spring Boot Web application?

server.port=9090. Can be specified in application.properties file or using runtime argument -Dserver.port=9090

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