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Desarrollador Java Interview Questions

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Desarrollador Java Interview Questions

En una entrevista para un puesto de desarrollador Java, prepárate para responder preguntas técnicas destinadas a evaluar tus conocimientos básicos de Java. El posible que también te formulen preguntas abiertas para evaluar tus habilidades de programación y de resolución de problemas. Prepárate para afrontar preguntas no técnicas centradas en tus habilidades de comunicación interpersonal, de organización del tiempo y de ética en el trabajo.

Preguntas de entrevista más frecuentes para desarrollador/a Java y cómo responderlas

Question 1

Pregunta n.º 1: ¿Cuál es la diferencia entre HashTable y HashMap en Java?

How to answer
Respuesta recomendada: Los entrevistadores usarán preguntas técnicas para evaluar tu cualificación formal y tus conocimientos del lenguaje de programación Java. Aprovecha tu respuesta para exponer tus habilidades de comunicación. Aunque lleves años programando, quizás te convenga repasar tus nociones básicas de Java antes de la entrevista.
Question 2

Pregunta n.º 2: Escribe un programa para determinar si 243 es un número Armstrong.

How to answer
Respuesta recomendada: Usarán preguntas abiertas para poner a prueba tus habilidades de programación. Esta pregunta permite evaluar tu capacidad para resolver un problema utilizando un algoritmo de Java. Explica tu planteamiento mientras utilizas un editor de código o pizarra.
Question 3

Pregunta n.º 3: ¿Cómo lograrías elaborar código de calidad si tuvieras que simultanear varios proyectos Java?

How to answer
Respuesta recomendada: Los desarrolladores Java a menudo tienen que trabajar en varios proyectos a la vez. Las personas que realizan la entrevista utilizan preguntas como esta para poner a prueba tus habilidades organizativas y de gestión. Las empresas también intentan evaluar tu compromiso de calidad con tu trabajo. Si tienes experiencia como desarrollador, incluye ejemplos de tu experiencia profesional que demuestren tu capacidad para producir trabajo de calidad y para gestionar el tiempo de manera eficiente.

711,648 desarrollador java interview questions shared by candidates

Programs like remove the duplicate numbers in sorted array by scanning the array only once, means {1,1,2,3,6,8,8,8,8}-->{1,2,3,6,8}, producer and consumer problem, and finding the sum of diagonal elemts in array of any size, etc
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Software Engineer With 2+ Years of Experience

Interviewed at Huawei Technologies

3.4★
Nov 27, 2011

Programs like remove the duplicate numbers in sorted array by scanning the array only once, means {1,1,2,3,6,8,8,8,8}-->{1,2,3,6,8}, producer and consumer problem, and finding the sum of diagonal elemts in array of any size, etc

Difference between Encapsulation and Abstraction. Examples of OOPS concepts. Java Interfaces, access modifiers. Classes Objects. Keys in DBMS Difference between DROP, DELETE and TRUNCATE One question from coding round(which I could not solve). I was given 15 minutes to solve but I was unable to solve. Interviewers were helpful and Company is good.
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Software Engineer Trainee

Interviewed at Nirvana Solutions

3.2★
Aug 11, 2017

Difference between Encapsulation and Abstraction. Examples of OOPS concepts. Java Interfaces, access modifiers. Classes Objects. Keys in DBMS Difference between DROP, DELETE and TRUNCATE One question from coding round(which I could not solve). I was given 15 minutes to solve but I was unable to solve. Interviewers were helpful and Company is good.

1. Given an Array , E.g. [2,5,6,3,9,5,10,56,25] and a number X. now find all the contigous subarrays with length X , if X=3, then all the subarrays are [2,5,6], [5,6,3], [6,3,9] etc. now in all these subarrays find the minimum element. and out of all those minimum elements, return the maximum one. 2. Given a URL, Query the URL and fetch the JSON result (paginated), find all the subsequent result from new pages. parse the json and do some manipulation on that data, find a specific dataset from that json.
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Senior Software Engineer

Interviewed at Twilio

3.9★
Mar 9, 2021

1. Given an Array , E.g. [2,5,6,3,9,5,10,56,25] and a number X. now find all the contigous subarrays with length X , if X=3, then all the subarrays are [2,5,6], [5,6,3], [6,3,9] etc. now in all these subarrays find the minimum element. and out of all those minimum elements, return the maximum one. 2. Given a URL, Query the URL and fetch the JSON result (paginated), find all the subsequent result from new pages. parse the json and do some manipulation on that data, find a specific dataset from that json.

First round Apti - 10 Numerical 25 Java based MCQ second round interview- interviewer was good . question- array list program find second highest salary what is JSP and syntax what is servlet and their services questions on string class polymorphism exception handling
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Java Developer

Interviewed at Naaptol

2.6★
Nov 26, 2019

First round Apti - 10 Numerical 25 Java based MCQ second round interview- interviewer was good . question- array list program find second highest salary what is JSP and syntax what is servlet and their services questions on string class polymorphism exception handling

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