Desenvolvedor Java Interview Questions

Desenvolvedor Java Interview Questions

Prepare-se para responder a perguntas técnicas que testam seu conhecimento básico de Java. Os entrevistadores também podem fazer perguntas abertas para avaliar suas habilidades de codificação e solução de problemas. Prepare-se para perguntas não técnicas relacionadas à sua gestão de tempo, comunicação interpessoal e ética profissional.

Principais perguntas de entrevista para desenvolvedor(a) Java e como respondê-las

Question 1

Pergunta 1: Qual é a diferença entre HashTable e HashMap no Java?

How to answer
Como responder: Os entrevistadores usam perguntas técnicas para avaliar seu treinamento formal e seu conhecimento da linguagem de programação Java. Demonstre suas habilidades de comunicação. Mesmo que você tenha bastante experiência com codificação, revise os conceitos básicos de Java antes da entrevista.
Question 2

Pergunta 2: Crie um programa para determinar se 243 é um número de Armstrong.

How to answer
Como responder: Os entrevistadores usam perguntas abertas para testar suas habilidades de codificação. Essa pergunta avalia sua capacidade de solucionar problemas usando um algoritmo Java. Explique seu raciocínio usando um editor de código ou uma lousa para resolver o problema.
Question 3

Pergunta 3: Como você cria códigos de qualidade quando precisa trabalhar em vários projetos Java ao mesmo tempo?

How to answer
Como responder: Desenvolvedores Java normalmente trabalham em vários projetos ao mesmo tempo. Os entrevistadores usam perguntas como essa para testar suas habilidades organizacionais e de gestão de tempo. Além disso, eles também avaliam seu compromisso com um trabalho de qualidade. Se você tiver experiência na área, inclua exemplos de trabalhos que demonstram alta qualidade e gestão de tempo eficaz.

30,863 desenvolvedor java interview questions shared by candidates

finally face to face. this is 6 hour long and they will decide very quick the result. First is a Java test. expect to write long java programs with pen and paper. should write code accurately no psudo code java code. some of the questions were insert node in tree, find the bug in single linked list which is looping. Heavy multi threading concurrency questions. thread contention, java 5+ concurrency API lots of multi threading in depth questions. somof the questions ae when java does context switching explain what happens in CPU level1,level2,level3 cache. how do you optmize hit miss on cpu cache with java threading. questions about DB partition sharding, network topology in cassandra, clearly Big 0 questions. java concurrency concurrency collections framework questions I was asked to write on white board function in java to recursively delete files and then in a directory tree. Java code with semi colons command and perfect syntax was expected. boundary conditions need to be handled. unit tests were asked to be written.
avatar

Lead Java Developer

Interviewed at Intercontinental Exchange

3.2
Jan 23, 2016

finally face to face. this is 6 hour long and they will decide very quick the result. First is a Java test. expect to write long java programs with pen and paper. should write code accurately no psudo code java code. some of the questions were insert node in tree, find the bug in single linked list which is looping. Heavy multi threading concurrency questions. thread contention, java 5+ concurrency API lots of multi threading in depth questions. somof the questions ae when java does context switching explain what happens in CPU level1,level2,level3 cache. how do you optmize hit miss on cpu cache with java threading. questions about DB partition sharding, network topology in cassandra, clearly Big 0 questions. java concurrency concurrency collections framework questions I was asked to write on white board function in java to recursively delete files and then in a directory tree. Java code with semi colons command and perfect syntax was expected. boundary conditions need to be handled. unit tests were asked to be written.

interviewer started with oops principle Object comparison diff. bte string and stringbuffer http request lifecycle 2 puzzles - did not strike me at time -2 same candles - 1 burns in 1 hr.how will you measure 1 1/2 hr -how will you tell weather a number can be represented in 2 raise to n like 4 can be writeen as 2square.
avatar

Java Lead

Interviewed at Ness Digital Engineering

4
Jul 25, 2011

interviewer started with oops principle Object comparison diff. bte string and stringbuffer http request lifecycle 2 puzzles - did not strike me at time -2 same candles - 1 burns in 1 hr.how will you measure 1 1/2 hr -how will you tell weather a number can be represented in 2 raise to n like 4 can be writeen as 2square.

1st Programming Round 1) WAP to check if the string is unique or not 2) Given an array of Integers , among the elements find the pair whose sum is equal to a given number 3) Idr tbh Have to solve 2 out of 3 (Logic is very important , other errors are acceptable)
avatar

Java Developer

Interviewed at Thinkitive Technologies

4.5
Aug 27, 2019

1st Programming Round 1) WAP to check if the string is unique or not 2) Given an array of Integers , among the elements find the pair whose sum is equal to a given number 3) Idr tbh Have to solve 2 out of 3 (Logic is very important , other errors are acceptable)

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