Senior Java Engineer Interview Questions

635 senior java engineer interview questions shared by candidates

Parte lógica: - Caso um vendedor aumente em 15% o valor de um produto de X dolares, quanto será o novo valor? - Etc... Parte técnica: - Qual a diferença de Classe e Objeto? - Qual a diferença de List, Set e Map? - Pra que serve o final, volatile, etc...
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Java Senior Software Engineer

Interviewed at BairesDev

4.2
Oct 20, 2021

Parte lógica: - Caso um vendedor aumente em 15% o valor de um produto de X dolares, quanto será o novo valor? - Etc... Parte técnica: - Qual a diferença de Classe e Objeto? - Qual a diferença de List, Set e Map? - Pra que serve o final, volatile, etc...

Circuit breaker implementation in Java: The service A calls service B and service C every time. If one service fails 3-times in 10 minutes ( or 20 seconds in the implementation) the next call will be blocked for 5 minutes (10 seconds in the implementation). There was given a simulation of remote method calls, I needed to implement only the execute() which calls the remote service if possible.
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Senior Backend Java Engineer

Interviewed at Wise

3.7
Feb 19, 2026

Circuit breaker implementation in Java: The service A calls service B and service C every time. If one service fails 3-times in 10 minutes ( or 20 seconds in the implementation) the next call will be blocked for 5 minutes (10 seconds in the implementation). There was given a simulation of remote method calls, I needed to implement only the execute() which calls the remote service if possible.

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