JSW One Platforms Interview Questions, Process, and Tips

Q1. Difference between useRef and forwardRef. How to write polyfills in javascript for arrays, object using a prototype. how to ship a product from local development to a production ready application.
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Q2. React vs Angular, difference between library and framework What are static site generators and how do they work? What are server workers and web workers and how these both can be used by making a progressi...read more
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Q3. What is the use of useCallback hook in React. What are controlled and uncontrolled component in react and when to choose while development a form functionalities in React.
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Q4. How MicroFrontend works and what is module federation in webpack? Difference between async and defer use in script tag?
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Data Structures, Algorithms, easy to medium coding questions

Q1. Rest APIs in Java
Ans. 
Rest APIs in Java are used to create web services that can be accessed over HTTP.
• Rest APIs in Java are typically implemented using frameworks like Spring Boot or Jersey.

• They use HTTP methods like GET, POST, PUT, DELETE to perform CRUD operations on resources.

• Data is usually exchanged in JSON or XML format.

• Authentication and authorization can be implemented using tokens like JWT.

• Example: Creating a REST API to manage a
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Q2. MVC layers for Java web service
Ans. 
MVC layers in Java web service help separate concerns for better organization and maintainability.
• Model layer: Represents the data and business logic

• View layer: Handles the presentation of data to the user

• Controller layer: Manages user input and updates the model accordingly
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Q1. What projects you have worked upon?
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Q2. Have you worked upon CI/CD, Microservices, Junits, Async apis, Multithreading?
Ans. 
Yes, I have experience with CI/CD, Microservices, Junits, Async APIs, and Multithreading.
• Implemented CI/CD pipelines using Jenkins for automated testing and deployment

• Developed microservices architecture using Spring Boot and Docker containers

• Wrote Junit tests for unit testing and integration testing

• Worked on building async APIs using frameworks like Node.js and Spring WebFlux

• Utilized multithreading in Java application
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Q3. Design a CRUD of saving and getting a message in Spring boot. Write all classes from controller, service, repository.
Ans. 
Design a CRUD of saving and getting a message in Spring boot
• Create a Message entity with fields like id, content, createdDate

• Create a MessageRepository interface extending JpaRepository

• Create a MessageService class with methods for saving, getting, updating, and deleting messages

• Create a MessageController class with endpoints for CRUD operations using @RestController and @RequestMapping annotations
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Q1. Poor Communication and Lack of Transparency
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Q1. What is framework used in your project ?
Ans. 
The framework used in my project is TestNG with Selenium WebDriver for automation testing.
• TestNG is a testing framework that allows for easy test configuration and execution.

• Selenium WebDriver is a tool used for automating web application testing.

• The combination of TestNG and Selenium WebDriver provides a robust framework for automation testing.

• TestNG allows for parallel test execution, data-driven testing, and easy re...read more
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Q2. Create xpath for one of web commerce site
Ans. 
Create xpath for a web commerce site
• Inspect the element on the web page using browser developer tools

• Identify unique attributes like id, class, name, etc. to create xpath

• Use relative xpath for more robust and flexible locators
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Q1. Tell me about yourself
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Q2. About the present job and experience
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Good and detailed round

Q1. Past background
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Q2. Why you want to switch
Ans. 
Seeking new challenges and opportunities for growth in a dynamic environment.
• Looking for new challenges and opportunities to grow professionally

• Interested in working in a more dynamic environment

• Seeking a role with greater potential for career advancement
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Q1. What's the issue in past company
Ans. 
Lack of clear communication and coordination among departments
• Lack of alignment between sales and marketing teams

• Inefficient handover process from sales to project management

• Poor communication between project management and engineering teams
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Q2. How can you support us in achieving our objectives
Ans. 
I can support by leveraging my experience in project sales and business development to identify opportunities, create strategic plans, and build strong relationships.
• Utilize my expertise in project sales to identify potential clients and opportunities

• Develop strategic plans to achieve sales targets and business objectives

• Build and maintain strong relationships with clients and partners to drive growth

• Utilize market res...read more
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