Preguntas de entrevista para Backend Developer en WeightWatchers

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Entrevista para Backend Developer

30 de oct de 2021

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Entrevista

Completely random Java questions followed by live coding a Java stream. When I say completely random I mean completely random. No questions about relevant or recent experience. AWS, REST, payment processing, authentication, agile, databases….no questions whatsoever. Just random Java questions.

Preguntas de entrevista [4]

Pregunta 1

Describe the differences between Comparable and Comparator.

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Pregunta 2

What are the thread pool types for ExecutorService? What are the differences? Why would you use them?

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Pregunta 3

When adding threads to an ExecutorService how do you check them?

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Pregunta 4

If you have to write to a database and queue if there is an error how do you roll them back?

1 respuesta

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