HCLTech Application Development Analyst Interview Questions and Answers

Q1. Mostly asked java 8 update and distinct number in given array and Multithreading
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Q2. 2 program based on java 8, array reverse
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Q1. What is the Java code for comparing two strings for equality?
Ans. 
Use the equals() method in Java to compare two strings for equality.
• Use the equals() method to compare two strings for equality.

• Example: String str1 = "hello"; String str2 = "hello"; if(str1.equals(str2)) { // strings are equal }
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Q1. What is SDLC? Explain briefly
Ans. 
SDLC stands for Software Development Life Cycle, a process used by software development teams to design, develop, and test high-quality software.
• SDLC is a structured process that consists of several phases such as planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables that contribute to the overall success of the project.

• SDLC helps ensure that the ...read more
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Q2. Can you tell me the core concepts of Object Oriented Programming?
Ans. 
Core concepts of Object Oriented Programming include encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Allowing a new class to inherit properties and behavior from an existing class.

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways.

• Example: Inheritance - A 'Car'...read more
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Q3. Project related questions
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Aptitude test means the optional question(objectives)

One topice take and discuss all of the group member

Technical knowledge can be checked

Q1. How can you perfect programming knoledge
Ans. 
Perfecting programming knowledge requires continuous learning, practice, and staying updated with industry trends.
• Continuous learning through online courses, tutorials, and books

• Practicing coding challenges on platforms like LeetCode or HackerRank

• Contributing to open-source projects on GitHub

• Attending tech conferences and meetups to network and learn from others

• Staying updated with the latest programming languages and
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Q2. What is java and python
Ans. 
Java and Python are popular programming languages used for application development.
• Java is a statically typed language known for its platform independence and object-oriented programming features.

• Python is a dynamically typed language known for its simplicity and readability, often used for web development and data analysis.
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Q1. HR round is the final round check the all documents in this round
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Q1. Any standing arrears location preffered marks scored in 10 and 12th and college Are you a Fresher Self introduction okay with Night shifts your strength and weakness why you choose cognizant why you not...read more
Ans. 
I have no standing arrears and I am open to working night shifts. I will provide a self introduction and explain why I chose Cognizant over my college major.
• No standing arrears

• Open to night shifts

• Self introduction

• Reason for choosing Cognizant over college major
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Q1. Define nfts define vpn define sql define linux and what editor we use in linux how to install windows 10 in laptop or system how to communicate using one system to another how to work in linux what linux ...read more
Ans. 
This interview question covers various topics related to application development, including NFTs, VPN, SQL, Linux, and Windows installation.
• NFTs are non-fungible tokens, which are unique digital assets that can represent ownership of a specific item or piece of content.

• VPN stands for Virtual Private Network, which provides a secure and encrypted connection over a public network, allowing users to access private network...read more
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Java:-c+,c++,SQL:-database,core java:-oops concept,web technologie:-html

Relation,reasonal, probability

Q1. Tuple Vs list,array Vs list
Ans. 
Tuple is immutable, list is mutable. Array is fixed size, list is dynamic size.
• Tuple is immutable, meaning its values cannot be changed after creation.

• List is mutable, meaning its values can be changed after creation.

• Array has a fixed size and can only contain elements of the same data type.

• List has a dynamic size and can contain elements of different data types.

• Example: Tuple - (1, 2, 3), List - [1, 'a', True], Array
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Q1. Reverse string without using inbuilt function
Ans. 
Reverse a string without using inbuilt function
• Create a new string variable to store the reversed string

• Iterate through the original string from end to start and append each character to the new string

• Return the new string as the reversed string
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