HCLTech Full Stack Developer Interview Questions and Answers

Q1. Javascript questions were mainly there like closures , currying Objects and promises , then they started with React
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Q2. In react they asked about hooks, difference between props and state, version , useMemo , axios working , microservices
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Q1. Why do u want to join us , u already holding an offer
Ans. 
I am drawn to your company's innovative projects and collaborative work environment.
• I am impressed by the cutting-edge technologies and projects your company is working on.

• I value the opportunity to work in a collaborative and supportive team environment.

• I believe that joining your company will provide me with the chance to further develop my skills and contribute meaningfully to impactful projects.
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Q2. How do u prioritize your task
Ans. 
I prioritize tasks based on deadlines, importance, and dependencies.
• I create a list of all tasks and categorize them based on deadlines.

• I identify tasks that are critical to the project's success and prioritize them accordingly.

• I consider dependencies between tasks and prioritize those that are dependent on others being completed first.

• I regularly reassess priorities and adjust as needed based on changing circumstances...read more
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Q1. What are classes and objects in programming?
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Classes are blueprints for creating objects, encapsulating data and behavior in programming.
• A class defines properties (attributes) and methods (functions) that its objects will have.

• An object is an instance of a class, representing a specific entity with state and behavior.

• Example: A 'Car' class may have attributes like 'color' and 'model', and methods like 'drive()' and 'stop()'.

• Multiple objects can be created from a...read more
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Q2. What is your understanding of data structures in Java?
Ans. 
Data structures in Java are essential for organizing and managing data efficiently, enabling effective algorithm implementation.
• Arrays: Fixed-size data structures that store elements of the same type. Example: String[] names = {"Alice", "Bob"};

• ArrayList: A resizable array implementation of the List interface. Example: ArrayList<String> list = new ArrayList<>();

• LinkedList: A doubly-linked list implementation...read more
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Q1. Questions on ReactJS and NodeJS. Basics like event loop, hooks, optimization and some JS snippets to solve related to object destructing and timeouts
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There were multiple choice question from react, javascript and node js

Q1. Javascript, react theory as well as practical questions were asked eg.
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Q2. 1. What is the flow of redux? 2. Write code for promises.
Ans. 
Flow of Redux and code for promises
• Redux flow involves dispatching actions, reducers updating state, and components subscribing to state changes

• Promises are used for asynchronous operations and have a resolve and reject function

• Example code for promises: new Promise((resolve, reject) => { // code here })
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