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Encapsulation is a fundamental OOP principle that restricts direct access to an object's data and methods.
Encapsulation combines data and methods that operate on that data into a single unit, or class.
It protects the internal state of an object by using access modifiers (private, protected, public).
For example, a class 'BankAccount' may have private attributes like 'balance' and public methods like 'deposit()' and...
Program managing involves overseeing multiple related projects to achieve strategic objectives and optimize resource utilization.
Aligns projects with organizational goals, e.g., launching a new product line.
Coordinates resources across projects, ensuring efficient use, e.g., sharing team members between projects.
Manages risks and issues at a program level, e.g., addressing supply chain disruptions affecting multip...
Effective project delivery requires clear planning, communication, and adaptability to ensure success and stakeholder satisfaction.
Define clear objectives: Establish specific, measurable goals for the project. For example, a marketing campaign should aim for a 20% increase in engagement.
Engage stakeholders early: Involve key stakeholders from the beginning to gather input and ensure alignment. For instance, hold i...
A database is an organized collection of data, typically stored and accessed electronically for efficient retrieval and management.
Databases can be relational (e.g., MySQL, PostgreSQL) or non-relational (e.g., MongoDB, Cassandra).
They use structured query language (SQL) for managing and querying data in relational databases.
Databases support data integrity, security, and concurrent access by multiple users.
Example...
SQL (Structured Query Language) is a standard programming language for managing and manipulating relational databases.
SQL is used to perform tasks such as querying data, updating records, and managing database structures.
Common SQL commands include SELECT (to retrieve data), INSERT (to add data), UPDATE (to modify data), and DELETE (to remove data).
SQL supports various data types, including INTEGER, VARCHAR, DATE,...
Java is a high-level programming language known for its portability, security, and object-oriented features.
Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).
It is object-oriented, allowing for modular and reusable code.
Java is known for its strong security features, such as sandboxing and encryption.
It is widely used for developing web applications, mobile apps, and ...
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
Dependency injection helps in achieving loose coupling between classes.
It allows for easier testing by providing a way to mock dependencies.
There are three types of dependency injection: constructor injection, setter injection, and interface injection.
Software testing is the process of evaluating a software application to ensure it meets specified requirements and functions correctly.
Identifying defects or bugs in the software
Verifying that the software meets the specified requirements
Ensuring the software functions correctly under different conditions
Types of software testing include unit testing, integration testing, system testing, and acceptance testing
Interface in Java is a blueprint of a class that defines a set of methods without implementation.
Interfaces can have abstract methods and constants
Classes can implement multiple interfaces
Interfaces are used for achieving abstraction and multiple inheritance
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
Hashmap uses a hash function to map keys to indices in an array.
It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.
In case of collisions, separate chaining or open addressing techniques are used to handle them.
Example: HashMap<String, Integer> map = new Hash...
Java is a high-level programming language known for its portability, security, and object-oriented features.
Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).
It is object-oriented, allowing for modular and reusable code.
Java is known for its strong security features, such as sandboxing and encryption.
It is widely used for developing web applications, mobile apps, and enter...
I delivered my code through version control systems like Git, following best practices for code review and testing.
Used Git for version control to track changes and collaborate with team members
Followed best practices for code review to ensure quality and consistency
Implemented automated testing to catch bugs early and ensure code reliability
The team size is 10 members.
The team consists of 2 senior engineers, 4 mid-level engineers, and 4 junior engineers.
We follow an agile methodology with cross-functional teams.
Regular team meetings and stand-ups ensure effective communication and collaboration.
Static variable is a variable that retains its value between function calls.
Static variables are declared using the 'static' keyword.
They are initialized only once and retain their value throughout the program's execution.
They have a local scope within the function where they are declared.
Example: static int count = 0; in a function will retain the value of count across multiple calls to that function.
I applied via Referral and was interviewed in May 2024. There were 3 interview rounds.
I appeared for an interview in Sep 2024, where I was asked the following questions.
Program managing involves overseeing multiple related projects to achieve strategic objectives and optimize resource utilization.
Aligns projects with organizational goals, e.g., launching a new product line.
Coordinates resources across projects, ensuring efficient use, e.g., sharing team members between projects.
Manages risks and issues at a program level, e.g., addressing supply chain disruptions affecting multiple pr...
Effective project delivery requires clear planning, communication, and adaptability to ensure success and stakeholder satisfaction.
Define clear objectives: Establish specific, measurable goals for the project. For example, a marketing campaign should aim for a 20% increase in engagement.
Engage stakeholders early: Involve key stakeholders from the beginning to gather input and ensure alignment. For instance, hold initia...
Selenium locators are used to identify web elements on a web page in order to perform automated testing.
Selenium locators include ID, name, class name, tag name, link text, partial link text, xpath, and css selector
They are used in Selenium WebDriver to interact with web elements
For example, driver.findElement(By.id("username")) will locate the element with id 'username'
Hands-on experience refers to practical experience gained by actively working on projects or tasks related to a specific field or technology.
Hands-on experience in microservice design pattern involves actually implementing and deploying microservices in a real-world project.
Hands-on experience in security includes actively working on implementing security measures such as encryption, authentication, and authorization i...
I am drawn to this organization for its innovative projects and collaborative culture, and I excel in sprint planning and estimation.
I want to join because of the company's commitment to cutting-edge technology and its focus on professional growth.
In sprint planning, I prioritize tasks based on business value and team capacity, ensuring alignment with project goals.
For effort estimation, I use techniques like Planning ...
Aptitude test has the basic questions
I developed a web-based project management system for tracking tasks and deadlines.
Used HTML, CSS, JavaScript for front-end development
Utilized PHP and MySQL for back-end functionality
Implemented user authentication and authorization features
Integrated calendar and notification functionalities
Currency conversion use case diagram for Tech Lead interview
Actors: User, Currency Converter System
Use Cases: Enter amount, Select source currency, Select target currency, Convert currency, Display converted amount
Relationships: User interacts with Currency Converter System to perform currency conversion
Include: Error handling for invalid inputs
Extend: Historical exchange rate lookup feature
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