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Object-Oriented Programming (OOP) is a paradigm based on objects, encapsulating data and behavior for modular code design.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class from an existing class, inheriting attributes and methods (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the s...
JVM is a virtual machine that executes Java bytecode, while JDK is a development kit that includes tools for developing Java applications.
JVM stands for Java Virtual Machine and is responsible for running Java bytecode on different platforms.
JDK stands for Java Development Kit and includes tools like compiler, debugger, and libraries for developing Java applications.
JDK contains JRE (Java Runtime Environment) whic...
A singly linked list is a data structure where each element points to the next element in the sequence.
Each element in a singly linked list is called a node.
Nodes contain data and a reference to the next node in the sequence.
The last node points to null to indicate the end of the list.
Traversal in a singly linked list starts from the head node and follows the next pointers.
Insertion and deletion operations can be ...
API works as a set of rules and protocols that allows different software applications to communicate with each other.
API acts as an intermediary that allows two different software programs to talk to each other
API specifies the methods and data formats that applications can use to request and exchange information
API can be used to access data or functionality from a remote server, such as retrieving weather data f...
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Indexing is used to optimize database queries by creating data structures that allow for faster retrieval of information.
Indexing involves creating data structures like B-trees or hash tables to store key-value pairs for faster retrieval.
Indexes can be created on columns in database tables to speed up search queries.
Examples of indexing include creating a primary key index on a unique identifier column or a non-cl...
List is mutable, tuple is immutable in Python.
List can be modified after creation, tuple cannot.
List uses square brackets [], tuple uses parentheses ().
List is used for collections of items that may change, tuple for fixed collections.
Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
This program requires writing code to solve a specific problem or implement a feature.
Understand the problem statement clearly before coding.
Break down the problem into smaller, manageable parts.
Choose the right data structures (e.g., arrays, lists) for the task.
Write pseudocode to outline the logic before actual coding.
Test your code with various inputs to ensure it works as expected.
Technical refers to skills, knowledge, and processes related to technology and engineering disciplines.
Involves understanding programming languages like Python or Java.
Includes knowledge of software development methodologies, e.g., Agile or Scrum.
Encompasses hardware knowledge, such as computer architecture.
Requires familiarity with tools like Git for version control.
Involves problem-solving skills, such as debugg...
Use a before insert trigger to update records before they are inserted into the database.
Create a before insert trigger on the object you want to update records for.
Write the logic in the trigger to update the records as needed.
Make sure to test the trigger thoroughly before deploying it to production.
Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.
Spring Boot eliminates the need for manual configuration by providing defaults for most settings.
It allows developers to quickly set up and run standalone Spring-based applications.
Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.
It promotes convent...
I appeared for an interview in Jul 2025, where I was asked the following questions.
Python is a high-level, interpreted programming language known for its readability and versatility in various applications.
Easy to learn: Python's syntax is clear and intuitive, making it accessible for beginners. Example: print('Hello, World!')
Versatile: Used in web development, data analysis, artificial intelligence, scientific computing, and more.
Rich libraries: Python has a vast ecosystem of libraries like NumPy fo...
I appeared for an interview in Dec 2024.
Numerical aptitude test, logical reasoning test, and technical aptitude test.
Case study GD, topic based GD,Role_play GD
I am a software developer with 5 years of experience in Java, Python, and SQL.
5 years of experience in Java, Python, and SQL
Strong problem-solving skills
Experience working in Agile development environment
Familiarity with version control systems like Git
I found this role through a job posting on LinkedIn.
Saw job posting on LinkedIn
Applied through company website
Referred by a friend who works at the company
My long term career goal is to become a senior software architect and lead a team of developers to create innovative solutions.
Work towards gaining expertise in various programming languages and technologies
Take on leadership roles in projects to develop management and communication skills
Attend industry conferences and workshops to stay updated on latest trends and advancements
Seek opportunities for mentorship and pro...
Your company is a leading software development firm specializing in creating innovative solutions for various industries.
Your company has a strong reputation for delivering high-quality software products.
You have a diverse portfolio of clients from different industries.
Your company values innovation and creativity in software development.
Your team is known for its expertise in cutting-edge technologies like AI and bloc...
My favorite programming language is Python because of its simplicity, readability, and versatility.
Python is known for its clean and readable syntax, making it easy to learn and understand.
Python has a large standard library with built-in modules for various tasks, reducing the need for external libraries.
Python is versatile and can be used for web development, data analysis, artificial intelligence, and more.
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
Objects are instances of classes, which define the structure and behavior of the objects.
Encapsulation is the concept of bundling data and methods that operate on the data within a single unit, such as a class.
Inheritance allows classes to inherit attribu...
I appeared for an interview in Sep 2024.
An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.
An assessment that measures an individual's inherent abilities and potential for success in a specific activity.
A coding test is a programming assessment designed to evaluate a candidate's coding skills. It is a standard component of the technical hiring process for software developers and programmers.
Assessment that evaluates a candidate's coding skills
Group discussion (GD) topics for interviews may cover areas such as business, social issues, and current affairs. GDs serve to evaluate a candidate's communication, leadership, and teamwork abilities.
Discussion assignments are prompts that your teacher may assign to you. By participating in these discussions, you can reflect on your learning, share ideas and opinions, or ask and answer questions. Discussions may require you to respond to individual questions or provide multiple responses to an ongoing conversation.
I appeared for an interview in May 2025, where I was asked the following questions.
20 min for 1 round of interview
Multithreading allows multiple threads to run concurrently, improving performance and responsiveness.
Multithreading is used to execute multiple tasks simultaneously within a single process.
It can improve performance by utilizing multiple CPU cores efficiently.
Common multithreading libraries include Java's Thread class and C#'s Task Parallel Library.
Example: In a web server, multithreading can handle multiple client req...
Reverse the number in the array
I applied via Walk-in and was interviewed in Nov 2024. There were 3 interview rounds.
Reverse string ,array sorting
I appeared for an interview in Jun 2025, where I was asked the following questions.
PCA, or Principal Component Analysis, is a dimensionality reduction technique used to simplify datasets while preserving variance.
PCA transforms data into a new coordinate system, where the greatest variance lies on the first axis.
It helps in reducing the number of features while retaining the essential information, making it easier to visualize data.
For example, in image processing, PCA can reduce the number of pixels...
I appeared for an interview in Jun 2025, where I was asked the following questions.
In five years, I see myself as a lead developer, mentoring others and driving innovative projects that impact the industry.
I aim to lead a team of developers, guiding them through complex projects and fostering a collaborative environment.
I plan to deepen my expertise in emerging technologies, such as AI and machine learning, to contribute to cutting-edge solutions.
I envision myself taking on more responsibilities, pos...
I excel in problem-solving and teamwork, but I sometimes struggle with time management under tight deadlines.
Strength: Strong problem-solving skills - I enjoy tackling complex coding challenges, like optimizing algorithms for better performance.
Strength: Effective teamwork - I thrive in collaborative environments, having successfully led a project with cross-functional teams.
Weakness: Time management - I occasionally u...
Some of the top questions asked at the TCS Software Developer interview -
The duration of TCS Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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