Yotta Tech Ports Java Developer Interview Questions and Answers

Q1. No one showed up to interview
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Q2. Even they don’t responded to my mails
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Q1. Regular core java, OOPS, Spring Boot questions. It was like a rapid-fire round.
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Q1. Coding question - find repeat elements in an array
Ans. 
Find repeat elements in an array of strings
• Iterate through the array and store each element in a HashMap with its count

• Check if the count of any element is greater than 1, then it is a repeat element

• Return the repeat elements found in the array
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Q2. Project related questions
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Q3. Build a basic CRUD REST API endpoint
Ans. 
Build a basic CRUD REST API endpoint
• Create a REST API endpoint for each CRUD operation (Create, Read, Update, Delete)

• Use HTTP methods like POST, GET, PUT, DELETE to perform CRUD operations

• Implement data validation and error handling for each operation

• Utilize a framework like Spring Boot or Express.js to simplify API development
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Q1. Behavioral questions
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Q2. Technical questions about SpringBoot and microservices
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Q3. SQL question - third highest salary
Ans. 
To find the third highest salary in a SQL table, you can use the 'SELECT TOP 1' statement with 'ORDER BY salary DESC OFFSET 2 ROWS FETCH NEXT 1 ROWS ONLY'.
• Use the 'SELECT TOP 1' statement to retrieve only one record

• Order the records by salary in descending order using 'ORDER BY salary DESC'

• Skip the first two highest salaries using 'OFFSET 2 ROWS'

• Fetch the next record after skipping the first two using 'FETCH NEXT 1 ROW
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Implementation of the Spring security

Q1. What are the advantages of spring boot
Ans. 
Spring Boot provides a simplified way to create stand-alone, production-grade Spring-based Applications.
• Rapid application development

• Embedded server for easy deployment

• Auto-configuration for setting up Spring projects quickly

• Microservices support

• Actuator for monitoring and managing applications
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Q2. Java oops concept and sql questions
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Q1. Questions on the current project
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Q2. Microservices architecture in spring microservices
Ans. 
Microservices architecture in Spring is a way of designing software applications as a collection of loosely coupled services.
• Microservices architecture breaks down a large application into smaller, independent services that can be developed, deployed, and scaled independently.

• Spring Boot and Spring Cloud are commonly used frameworks for building microservices in Java.

• Each microservice typically has its own database and...read more
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Q1. Java 8 new features
Ans. 
Java 8 introduced several new features including lambda expressions, streams, and default methods.
• Lambda expressions allow for functional programming and simplify code.

• Streams provide a way to process collections of data in a functional way.

• Default methods allow for adding new methods to interfaces without breaking existing implementations.

• Other new features include the Date and Time API, Nashorn JavaScript engine, and...read more
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Q2. Stream api coding questions
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Q1. Your last project
Ans. 
Developed a web-based inventory management system for a retail company
• Used Java, Spring Boot, and MySQL for backend development

• Implemented a responsive UI using AngularJS and Bootstrap

• Integrated barcode scanning functionality for faster inventory management

• Implemented user authentication and authorization using Spring Security

• Deployed the application on AWS EC2 instance
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Q2. Challenged faced in last project
Ans. 
Integrated a new payment gateway in the project
• Had to understand the API documentation of the payment gateway

• Had to modify the existing codebase to integrate the new gateway

• Had to test the integration thoroughly to ensure it works as expected
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For freshers there is online aptitude test.

Coding round is done by interviewers on live screen sharing

Q1. Here they discuss about projects and work in depth.
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Q1. Tell me about yourself? What are your hobbies? If you get chance to work with our company what is your expectations from us?
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Q2. Discuss about policies and work culture
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Degree College ( B.C .A) group

Q1. What are your salary expectations?
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Java developer

Q1. Tell me about yourself.
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Q2. We want job? When coming to my mail in message
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Q3. Who many salary in monthly income?
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Q4. Which time open the office?
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Q5. We given work from ?
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Q1. We want job? How much given in monthly income.?
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Q2. We given work from home?
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Q3. Where branch in Wipro BPS?
Ans. 
Wipro BPS has multiple branches across India and globally.
• Wipro BPS has branches in major cities like Bangalore, Chennai, Mumbai, Pune, Hyderabad, etc.

• They also have branches in countries like the USA, UK, Australia, etc.

• The exact branch location for a Java Developer role may depend on the project and client requirements.
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I am fresher in Wipro BPS