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Ernst & Young Java Developer Interview Questions, Process, and Tips

Updated 23 Aug 2024

Top Ernst & Young Java Developer Interview Questions and Answers

  • Q1. Why is Java considered platform independent, while the Java Virtual Machine (JVM) is platform dependent?
  • Q2. What is the difference between an abstract class and an interface in OOP?
  • Q3. Can you explain the difference between setMaxResults() and setFetchSize() in a Query?
View all 20 questions

Ernst & Young Java Developer Interview Experiences

6 interviews found

Interview experience
4
Good
Difficulty level
Easy
Process Duration
-
Result
-

I applied via Job Portal and was interviewed in Mar 2024. There was 1 interview round.

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

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Java Developer Interview Questions & Answers

user image Rahul Bhardwaj

posted on 31 May 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I appeared for an interview before Apr 2021.

Round 1 - Video Call 

(7 Questions)

Round duration - 60 Minutes
Round difficulty - Easy

This round started with some basic questions from Java followed by some questions from OOPS in Java and standard Java 8 questions.

  • Q1. What are the advantages of using Packages in Java?
  • Ans. 

    Packages in Java help organize code, prevent naming conflicts, and provide access control.

    • Organize code into logical groups for easier maintenance and readability

    • Prevent naming conflicts by using unique package names

    • Provide access control by using access modifiers like public, private, protected, and default

    • Facilitate reusability by allowing classes to be easily imported and used in other packages

  • Answered by AI
  • Q2. Why is Java considered platform independent, while the Java Virtual Machine (JVM) is platform dependent?
  • Ans. 

    Java is platform independent because it can run on any system with JVM, which is platform dependent due to its need to interact with the underlying hardware.

    • Java code is compiled into bytecode, which can be executed on any system with a JVM installed.

    • JVM acts as an intermediary between the Java code and the underlying hardware of the system.

    • JVM is platform dependent because it needs to interact with the specific hardwa...

  • Answered by AI
  • Q3. Explain the use of the final keyword in a variable, method, and class.
  • Ans. 

    The final keyword in Java is used to restrict the modification of variables, methods, and classes.

    • Final variable: Once assigned, the value of a final variable cannot be changed.

    • Final method: A final method cannot be overridden by subclasses.

    • Final class: A final class cannot be extended.

  • Answered by AI
  • Q4. What is meant by an interface in Object-Oriented Programming?
  • Ans. 

    An interface in OOP is a blueprint of a class that defines a set of methods without implementation.

    • Interfaces in Java are used to achieve abstraction and multiple inheritance.

    • All methods in an interface are abstract by default and do not have a body.

    • Classes can implement multiple interfaces but can only extend one class.

    • Example: interface Shape { void draw(); }

    • Example: class Circle implements Shape { public void draw()

  • Answered by AI
  • Q5. What is the difference between an abstract class and an interface in OOP?
  • Ans. 

    Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

    • Abstract class can have constructors, fields, and methods, while interface can only have constants and method signatures.

    • A class can extend only one abstract class, but can implement multiple interfaces.

    • Abstract classes are used to define common characteristics of subclasses, while interfaces are used to defin...

  • Answered by AI
  • Q6. What are some standard Java pre-defined functional interfaces?
  • Ans. 

    Some standard Java pre-defined functional interfaces include Function, Consumer, Predicate, and Supplier.

    • Function: Represents a function that accepts one argument and produces a result. Example: Function<Integer, String>

    • Consumer: Represents an operation that accepts a single input argument and returns no result. Example: Consumer<String>

    • Predicate: Represents a predicate (boolean-valued function) of one argu...

  • Answered by AI
  • Q7. What are the features of a lambda expression?
  • Ans. 

    Lambda expressions are a feature introduced in Java 8 to provide a concise way to represent anonymous functions.

    • Lambda expressions are used to provide implementation of a functional interface.

    • They enable you to treat functionality as a method argument, or code as data.

    • Syntax of lambda expressions is (argument) -> (body).

    • Example: (int a, int b) -> a + b

  • Answered by AI
Round 2 - Video Call 

(9 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had questions from Microservices , Spring Boot and Hibernate. The interviewer was quite freindly and also helped wherever I was stuck.

  • Q1. What are the basic annotations that Spring Boot offers?
  • Ans. 

    Spring Boot offers annotations like @SpringBootApplication, @RestController, @Autowired, @Component, @RequestMapping, etc.

    • @SpringBootApplication - Used to mark the main class of a Spring Boot application.

    • @RestController - Used to define a class as a controller in a RESTful web service.

    • @Autowired - Used for automatic dependency injection.

    • @Component - Used to indicate that a class is a Spring component.

    • @RequestMapping - ...

  • Answered by AI
  • Q2. Can you explain the @RestController annotation in Spring Boot?
  • Ans. 

    The @RestController annotation in Spring Boot is used to define a class as a RESTful controller.

    • Used to create RESTful web services in Spring Boot

    • Combines @Controller and @ResponseBody annotations

    • Eliminates the need to annotate every method with @ResponseBody

  • Answered by AI
  • Q3. What is dependency injection?
  • Ans. 

    Dependency injection is a design pattern in which the dependencies of an object are provided externally rather than created within the object itself.

    • In dependency injection, the dependencies of a class are injected into the class from an external source, rather than the class creating the dependencies itself.

    • This helps in achieving loose coupling between classes, making the code more maintainable and testable.

    • There are...

  • Answered by AI
  • Q4. What does the @SpringBootApplication annotation do internally?
  • Ans. 

    The @SpringBootApplication annotation is used to mark a class as a Spring Boot application and enables auto-configuration and component scanning.

    • 1. Enables auto-configuration by scanning the classpath for specific types and configuring beans based on their presence.

    • 2. Enables component scanning to automatically discover and register Spring components such as @Component, @Service, @Repository, and @Controller.

    • 3. Combine...

  • Answered by AI
  • Q5. Can you explain the difference between setMaxResults() and setFetchSize() in a Query?
  • Ans. 

    setMaxResults() limits the number of results returned by a query, while setFetchSize() determines the number of rows fetched at a time from the database.

    • setMaxResults() is used to limit the number of results returned by a query.

    • setFetchSize() determines the number of rows fetched at a time from the database.

    • setMaxResults() is typically used for pagination purposes, while setFetchSize() can improve performance by reduci...

  • Answered by AI
  • Q6. What are the concurrency strategies available in Hibernate?
  • Ans. 

    Hibernate provides several concurrency strategies like optimistic locking, pessimistic locking, and versioning.

    • Optimistic locking: Allows multiple transactions to read and write to the database without locking the data. It checks for concurrent modifications before committing the transaction.

    • Pessimistic locking: Locks the data to prevent other transactions from accessing or modifying it until the lock is released.

    • Versi...

  • Answered by AI
  • Q7. Can you explain the N+1 SELECT problem in Hibernate?
  • Ans. 

    N+1 SELECT problem in Hibernate occurs when a query results in N+1 additional queries being executed.

    • Occurs when a query fetches a collection of entities and then for each entity, an additional query is executed to fetch related entities

    • Can be resolved by using fetch joins or batch fetching to fetch all related entities in a single query

    • Example: Fetching a list of orders and then for each order, fetching the customer i

  • Answered by AI
  • Q8. Can you explain the working of Microservice Architecture?
  • Ans. 

    Microservice Architecture is an architectural style that structures an application as a collection of loosely coupled services.

    • Each service is self-contained and can be developed, deployed, and scaled independently.

    • Services communicate with each other over a network, typically using HTTP/REST or messaging protocols.

    • Microservices allow for better scalability, flexibility, and resilience compared to monolithic architectu...

  • Answered by AI
  • Q9. What issues are generally addressed by Spring Cloud?
  • Ans. 

    Spring Cloud addresses issues related to distributed systems and microservices architecture.

    • Service discovery and registration

    • Load balancing

    • Circuit breakers

    • Distributed configuration management

    • Routing and gateway

    • Monitoring and tracing

  • Answered by AI
Round 3 - HR 

Round duration - 30 Minutes
Round difficulty - Easy

This was a Technical Cum HR round where I was first asked some basic Java related concepts and then we discussed
about my expectations from the company , learnings and growth in the forthcomig years. I would suggest be honest and
try to communicate your thoughts properly in these type of rounds to maximise your chances of getting selected.

Interview Preparation Tips

Eligibility criteria1+ years of experienceErnst & Young (EY) interview preparation:Topics to prepare for the interview - Java , OOPS , Spring , MVC , Hibernate , AptitudeTime required to prepare for the interview - 3 MonthsInterview preparation tips for other job seekers

Tip 1 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 2 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Ernst & Young interview questions for designations

 Senior Java Developer

 (1)

 Developer

 (1)

 Software Developer

 (8)

 Python Developer

 (2)

 Servicenow Developer

 (2)

 Senior Developer

 (1)

 Android Developer

 (1)

 Plsql Developer

 (1)

I applied via Naukri.com and was interviewed in Sep 2020. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. -OOPS concepts.
  • Q2. Difference between checked and unchecked exceptions.
  • Ans. 

    Checked exceptions are checked at compile-time while unchecked exceptions are not.

    • Checked exceptions are checked at compile-time and must be handled or declared in the method signature.

    • Unchecked exceptions are not checked at compile-time and do not need to be handled or declared.

    • Checked exceptions are usually used for recoverable errors while unchecked exceptions are used for unrecoverable errors.

    • Examples of checked ex...

  • Answered by AI
  • Q3. Difference between String and String Builder
  • Ans. 

    String is immutable, StringBuilder is mutable.

    • String is a sequence of characters stored in the heap memory.

    • String Builder is a mutable sequence of characters stored in the heap memory.

    • String objects are immutable, meaning their values cannot be changed once created.

    • String Builder objects are mutable, meaning their values can be changed after creation.

    • String concatenation creates a new String object each time, which can...

  • Answered by AI
  • Q4. How can we create our own immutable class
  • Ans. 

    An immutable class in Java can be created by declaring the class as final, making all fields private and final, and not providing any setter methods.

    • Declare the class as final to prevent inheritance

    • Make all fields private and final to prevent modification

    • Do not provide any setter methods to prevent changing the state

    • Initialize all fields in the constructor

    • Avoid returning mutable objects or references to internal mutabl

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared with the concepts as some questions were commonly asked and easy to be answered while some were not so common. Questions weren't that though although, but was not easy to recall the concepts during the interview.

Skills evaluated in this interview

Get interview-ready with Top Ernst & Young Interview Questions

I applied via Recruitment Consultant and was interviewed in Feb 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. The basic question of core java.Algorithms with java 8.Spring and spring-boot.Normal question of DB. Find 3rd largest salary?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be well versed with core java, Practice algorithims.Java 8 is essential. Be comfortable with spring-boot annotations.

Java Developer Jobs at Ernst & Young

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Interview questions from similar companies

Interview Questionnaire 

1 Question

  • Q1. 3 rounds were there. Project related questions along with 3 simple programming questions

Associate Interview Questions & Answers

PwC user image Anonymous

posted on 31 Dec 2021

I applied via Naukri.com and was interviewed before Dec 2020. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Different Aspects of GST vis a vis erstwhile tax regime. Recent GST changes. GST related numerical questions.
  • Ans. 

    GST has replaced multiple indirect taxes with a single tax. Recent changes include simplified return filing and reduced rates for certain items.

    • GST has replaced multiple indirect taxes like VAT, excise duty, service tax, etc.

    • It has simplified the tax structure and reduced the cascading effect of taxes.

    • Recent changes include the introduction of simplified return filing through GST Sahaj and GST Sugam.

    • GST rates have been...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Being prepared in the respective tax/accounting/audit field is helpful. Being confident and showing an eagerness to learn is what is seen as an essential quality.

Associate Interview Questions & Answers

PwC user image Anonymous

posted on 25 Oct 2021

I applied via Recruitment Consultant and was interviewed in Apr 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Case studies

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for field related case studies for every round if giving interview for analytics team.

Associate Interview Questions & Answers

PwC user image Anonymous

posted on 11 Sep 2022

I applied via Campus Placement and was interviewed before Sep 2021. There were 3 interview rounds.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident, show your communicative, and you are positive about growth and learning also exploring roles at the organization
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Ernst & Young Interview FAQs

How many rounds are there in Ernst & Young Java Developer interview?
Ernst & Young interview process usually has 1 rounds. The most common rounds in the Ernst & Young interview process are Technical.
How to prepare for Ernst & Young Java Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Ernst & Young. The most common topics and skills that interviewers at Ernst & Young expect are Java, Spring Boot, Microservices, Hibernate and J2Ee.
What are the top questions asked in Ernst & Young Java Developer interview?

Some of the top questions asked at the Ernst & Young Java Developer interview -

  1. How can we create our own immutable cl...read more
  2. Difference between checked and unchecked exceptio...read more
  3. How you would connect springboot project with data ba...read more

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Ernst & Young Java Developer Interview Process

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