HCL Group Software Engineer Interview Questions, Process, and Tips

Q1. Sort a following array without array operation
Ans. 
Sort an array without using array operation
• Use a sorting algorithm like bubble sort, insertion sort, or selection sort

• Implement the algorithm using loops and conditional statements

• Make sure to compare and swap elements in the array to sort it correctly
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Q2. What is microservices
Ans. 
Microservices are a software development technique where applications are built as a collection of small, independent services.
• Microservices architecture breaks down a large application into smaller, independent services

• Each service is responsible for a specific task and communicates with other services through APIs

• Microservices allow for greater flexibility, scalability, and easier maintenance

• Examples of companies usi...read more
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Q1. How to show whole table in SQL?
Ans. 
Use SELECT * FROM table_name to show whole table in SQL.
• Use SELECT * FROM table_name to retrieve all columns and rows from a table.

• Replace table_name with the actual name of the table you want to display.

• Make sure you have the necessary permissions to access the table.
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Q2. Difference between interface and abstract class?
Ans. 
Interface is a contract that defines the methods a class must implement, while abstract class can have both abstract and concrete methods.
• Interface can only have abstract methods and constants, while abstract class can have abstract and concrete methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used to achieve multiple inheritance in Java, while abstract class...read more
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Q3. Usecase of OOPS in programing and define OOPS pillars
Ans. 
OOPS is a programming paradigm that uses objects and classes to design and build applications.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class)

• Inheritance: Ability to create new classes based on existing classes, promoting code reusability

• Polymorphism: Ability for objects to be treated as instances of their parent class, allowing for flexibility in method implementation
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Java aptitude spring swl

Q1. What is aem developer role
Ans. 
AEM developer role involves designing, developing, and maintaining applications using Adobe Experience Manager (AEM).
• Designing and developing web applications using AEM

• Customizing AEM components and templates

• Integrating AEM with other systems and platforms

• Troubleshooting and debugging AEM applications

• Working closely with stakeholders to gather requirements and deliver solutions
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Q1. Osgi configuration
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Q1. About package and personal information
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