3+ years Java Developer Accenture Interview Experience| Java | Spring Boot | Microservices

kajal goyal

14 May 202408:37

Summary

TLDRIn this video, the speaker shares their interview experience for a Java developer role with 3+ years of experience at Accenture. They detail the two interview rounds—technical and HR—focusing heavily on microservices, Spring Boot, and REST APIs. The technical round included questions on microservices communication, asynchronous messaging, and building microservices from scratch. Additionally, the speaker explains coding challenges, including stream API tasks, functional interfaces, and lambda expressions. The HR round involved general questions about the candidate’s reasons for leaving their current job and salary expectations. The speaker provides tips for Java professionals preparing for similar interviews.

Takeaways

😀 The interview process involved two rounds: technical and HR, although Accenture typically conducts three rounds.
💼 The first round focused on microservices-related questions, as the job description mentioned Java, Spring Boot, microservices, and SQL server.
🔄 The first technical question was about how microservices communicate with each other, which is a basic but essential topic in microservices architecture.
🕒 The second question explored asynchronous messaging in microservices, asking for a detailed explanation.
🔧 The third question focused on creating a microservices application from scratch, with a step-by-step explanation of the setup.
📊 The fourth question was about the ways to send data to a server via REST APIs and involved explaining the different methods.
👩‍💻 The interviewer asked about past projects, including challenges faced and solutions implemented.
📱 The technical test involved using Stream API to retrieve employee phone numbers from an Employee class, testing hands-on coding skills.
🔍 Differences between @PathVariable and @RequestParam in REST APIs were discussed, along with API usage examples (POST, GET, PUT, DELETE).
💡 HR questions were more formal and focused on reasons for leaving the current job, expectations for CTC, and willingness to relocate.

Q & A

What was the first question asked in the technical interview?
-The first question asked in the technical interview was 'How do microservices communicate with each other?'
What topics were primarily focused on in the technical round?
-The technical round was heavily focused on microservices, Java, Spring Boot, and REST API-related questions.
What is the significance of asynchronous messaging in microservices?
-Asynchronous messaging in microservices allows different services to communicate without waiting for an immediate response, which helps in improving system performance and scalability.
What steps did the interviewer ask for when creating a microservices application from scratch?
-The interviewer asked for a step-by-step process to create a microservices application from scratch, including project setup, microservices architecture design, and implementation details.
What methods are available for transferring data to a server in REST APIs?
-In REST APIs, data can be transferred to a server using methods like POST, GET, PUT, and DELETE.
What was asked about the candidate’s previous project?
-The interviewer asked the candidate to explain the project they had worked on, including challenges faced, and there were several counter-questions related to the project.
What coding task was given to the candidate during the interview?
-The interviewer asked the candidate to write a code using the Stream API to retrieve phone number details of employees from an employee class.
What is the difference between path variables and request parameters in REST API?
-Path variables are used to specify a variable in the URL itself, while request parameters are used to pass data through query strings in the URL.
What is a functional interface, and what was the candidate asked to do with it?
-A functional interface in Java is an interface with exactly one abstract method. The candidate was asked to write and implement a code using a functional interface.
What type of questions were asked in the HR round?
-In the HR round, general questions were asked, such as why the candidate was leaving their current company (Infosys), why they wanted to join Accenture, their current and expected salary, and willingness to relocate.

Outlines

00:00

👩‍💻 HR and Interview Process Overview

The speaker starts by discussing the HR process for scheduling interviews, focusing on questions about the current company, years of experience, and expected CTC. The interview in Accenture included two rounds: a technical round and an HR round. Typically, Accenture has three rounds (technical, managerial, and HR), but in this case, only two were conducted. The speaker then transitions to explaining the technical round, which focused on microservices, and how HR provided a detailed job description outlining the required skills (Java, Spring Boot, microservices, SQL).

05:01

📚 Detailed Breakdown of Technical Interview Questions

The speaker dives into the specifics of their technical interview experience. The first question was about how microservices communicate with each other. The second involved explaining asynchronous messaging in microservices. The third required them to explain how to build a microservices application from scratch, focusing on the setup and architecture. The interviewer also asked how to send data to a server using REST APIs and discussed various challenges faced in the speaker's previous project, leading to in-depth questions about microservices implementation.

Mindmap

Keywords

💡Microservices

Microservices is an architectural style where an application is divided into small, independent services that communicate with each other, typically over a network. In the video, the candidate is asked several questions about microservices, including how they communicate and how to build a microservices-based application from scratch, highlighting its importance in modern software development.

💡Spring Boot

Spring Boot is a framework for Java that simplifies the development of production-ready applications by providing pre-configured settings and features. The speaker mentions its use in job descriptions and interview questions, particularly in conjunction with microservices, showing that it is a core part of their tech stack and essential for their work as a Java developer.

💡REST API

REST API (Representational State Transfer Application Programming Interface) is a set of rules that developers follow when building APIs, allowing different software systems to communicate over the web. In the video, the candidate explains how data is sent to the server using REST APIs and is asked about the different methods like GET, POST, PUT, and DELETE, which are common operations in web development.

💡Asynchronous Messaging

Asynchronous messaging is a communication method where messages are sent between services or systems without waiting for a direct response, enabling efficient and scalable communication. The candidate is questioned about this concept in the context of microservices, reflecting its importance in distributed systems where immediate feedback isn’t always possible or necessary.

💡Stream API

Stream API is a feature in Java 8 and above that allows for functional-style operations on collections of objects, such as filtering, mapping, and collecting data. The interviewer asks the candidate to retrieve employee phone numbers using Stream API, and the conversation explores its use in simplifying data processing, indicating its relevance for Java professionals.

💡Functional Interface

A functional interface in Java is an interface that contains only one abstract method, and it can be implemented using lambda expressions. The candidate is asked to write code for a functional interface, emphasizing the importance of this concept in modern Java programming, especially with lambda expressions and functional programming features.

💡Lambda Expression

Lambda expressions are a feature introduced in Java 8 that allow developers to write more concise code by enabling functional programming. In the video, the candidate is tasked with explaining and demonstrating lambda expressions through coding scenarios, showing how they are used for simplifying code, particularly with functional interfaces.

💡RequestParam vs PathVariable

RequestParam and PathVariable are two ways to extract parameters in a Spring Boot REST API. RequestParam is used to extract query parameters from the URL, while PathVariable extracts parameters from the URI path. The candidate is asked about the difference between them, showing their practical understanding of routing in web applications.

💡Project Explanation

The interviewer asks the candidate to explain the projects they have worked on, focusing on the type of work they did and the challenges they faced. This is a crucial part of the interview where candidates demonstrate their practical experience and ability to handle real-world scenarios in their job.

💡HR Round

The HR round in an interview typically involves questions about the candidate’s background, motivations, salary expectations, and willingness to relocate. The speaker describes this as a formality after the technical round, where they were asked about reasons for leaving their previous company, desired salary, and relocation preferences, highlighting the softer aspects of the interview process.

Highlights

Introduction to the HR round, focusing on common questions like current company, total years of experience, and relevant technologies.

Two interview rounds were conducted at Accenture: technical and HR rounds, instead of the usual three.

Technical round questions were heavily focused on microservices, as mentioned in the job description (JD) shared by HR.

First technical question: How do microservices communicate with each other? A foundational question for microservice architecture.

Second question: What is asynchronous messaging in microservices, and can you explain it?

Third question: If you were to build a microservices application from scratch, what would be the step-by-step process?

Fourth question: How many ways can you send data to the server in a REST API?

The interviewer asked for detailed project work experience and the challenges faced during the project.

A coding task related to the Stream API was given: retrieving employee phone numbers using Stream API.

What is the difference between PathVariable and RequestParam? Explanation required for REST API.

Discussion on the use of GET, POST, PUT, and DELETE APIs, including an example of retrieving and updating user information.

Stream API question: What happens if we don't use the .collect method in the Stream API?

Question on functional interfaces in Java: Write and implement code to explain functional interfaces.

Explanation of lambda expressions with an example code scenario.

HR round focused on general questions like current CTC, expected CTC, reasons for leaving Infosys, and willingness to relocate.