HCLTech Software Engineer Interview Questions and Answers for Freshers

Q1. 1) OOPS in java, and told to explain abstraction, encapsulation, inheritance with practical code 2) Exception handling(globally), Authentication and authorization 3) SOLID principles and factory design pat...read more
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Interview questions for Software Engineer position covering OOPS concepts, exception handling, SOLID principles, Java 8 features, and Streams.
• Abstraction in OOPS: Hiding implementation details. Example: Abstract class Shape with method draw().

• Encapsulation in OOPS: Bundling data and methods that operate on the data. Example: Class Employee with private fields and public getters/setters.

• Inheritance in OOPS: Reusing code...read more
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Q2. 1) Advantage of springboot over spring 2) Tell me all the anotations you know in spring 3) What are CRUD operations, write controller layer and use validating annotations like @NotNull, @valid etc. how to ...read more
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The interview questions cover various topics related to Spring framework, REST vs SOAP, JPA repository, Feign client, circuit breaker, and Spring Security.
• Spring Boot provides a simpler and faster way to set up and run Spring applications compared to traditional Spring.

• Common annotations in Spring include @Controller, @Service, @Repository, @Autowired, @Component, @RequestMapping, @GetMapping, @PostMapping, @PutMapping...read more
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Q3. 1) ACID properties 2) DBMS commands 3) inner queries 4) Joins 5) S3 bucket congif and how to handle file and upload and retrieve in s3 6) Ci/Cd basic flow and docker explaination
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50 aptitude questions

2 codes were given and it was easy

Q1. Asked about python
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Q2. Asked about projects which I have done
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Q3. Lastly some HR questions
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Q1. How about good for your new company
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Q2. At what position you are after 5 years
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Q1. Move All 0's to end of the array
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Shift all 0's in an array to the end while maintaining the order of non-zero elements.
• Iterate through the array and maintain a count of non-zero elements.

• Use a second pointer to place non-zero elements in their new positions.

• Fill the remaining positions in the array with 0's after all non-zero elements are placed.

• Example: For input [0, 1, 0, 3, 12], output should be [1, 3, 12, 0, 0].
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Q2. Explain about redux,context api etc
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Redux and Context API are state management tools in React for managing application state efficiently.
• Redux is a predictable state container for JavaScript apps, allowing for centralized state management.

• Context API is a built-in React feature that allows for sharing state across components without prop drilling.

• Redux uses actions and reducers to manage state changes, while Context API uses Provider and Consumer compone...read more
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