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OOP is a programming paradigm based on objects, encapsulating data and behavior, promoting code reusability and modularity.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class based on an existing class, inheriting its properties (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the same...
Java is a versatile, object-oriented programming language designed for portability across platforms and ease of use.
Object-Oriented: Java uses objects to represent data and methods, promoting code reusability. Example: Classes and objects.
Platform-Independent: Java code is compiled into bytecode, which can run on any device with a Java Virtual Machine (JVM).
Rich API: Java provides a comprehensive set of libraries ...
Variables can be categorized based on their scope, lifetime, and data type, impacting how they are used in programming.
1. Local Variables: Defined within a function or block, e.g., 'int x = 10;' inside a function.
2. Global Variables: Accessible throughout the program, e.g., 'int count;' defined outside any function.
3. Static Variables: Retain their value between function calls, e.g., 'static int counter = 0;' in a...
The JVM enables Java applications to run on any device by providing an environment for executing Java bytecode.
Platform Independence: JVM allows Java programs to run on any operating system without modification.
Bytecode Execution: It interprets or compiles Java bytecode into machine code for execution.
Memory Management: JVM handles memory allocation and garbage collection automatically.
Security: It provides a secu...
An interface defines a contract for classes, specifying methods and properties without implementing them.
An interface can contain method signatures and properties but no implementation.
Classes that implement an interface must provide concrete implementations for all its members.
Interfaces support multiple inheritance, allowing a class to implement multiple interfaces.
Example: In Java, 'Runnable' is an interface th...
Identify bugs in a system diagram using various testing methods and techniques to ensure quality and functionality.
Review the system diagram for logical inconsistencies or missing components, e.g., a missing data flow between modules.
Conduct boundary value analysis by testing inputs at the edges of valid ranges, e.g., testing a user input limit.
Utilize state transition testing to verify system behavior across diff...
Program to calculate factorial of a number using for loop
Initialize a variable to store the factorial result
Use a for loop to iterate from 1 to the given number
Multiply the current value with the factorial result in each iteration
Return the factorial result
Object-Oriented Programming (OOP) principles are crucial for .NET development, focusing on encapsulation, inheritance, and polymorphism.
Encapsulation: Bundling data and methods that operate on the data, e.g., a class 'Car' with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Creating a new class based on an existing class, e.g., 'ElectricCar' inherits from 'Car', adding features like 'batteryC...
Debugging can be achieved by identifying and fixing errors in the code.
Use debugging tools like breakpoints to pause the code execution and inspect variables
Review the code logic and look for syntax errors or logical mistakes
Utilize logging to track the flow of the program and identify issues
Test the code with different inputs to reproduce and isolate the bugs
Collaborate with team members to get fresh perspectives...
Debugging is the process of identifying and fixing errors or bugs in software code.
Identifying and isolating issues in the code
Using tools like breakpoints and print statements to track down bugs
Fixing errors to ensure the code runs correctly
Testing the code to verify that the bugs have been resolved
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
Program to calculate factorial of a number using for loop
Initialize a variable to store the factorial result
Use a for loop to iterate from 1 to the given number
Multiply the current value with the factorial result in each iteration
Return the factorial result
I applied via Company Website and was interviewed in Jul 2024. There were 2 interview rounds.
I appeared for an interview in May 2025, where I was asked the following questions.
Java is a versatile, object-oriented programming language designed for portability across platforms and ease of use.
Object-Oriented: Java uses objects to represent data and methods, promoting code reusability. Example: Classes and objects.
Platform-Independent: Java code is compiled into bytecode, which can run on any device with a Java Virtual Machine (JVM).
Rich API: Java provides a comprehensive set of libraries for t...
The JVM enables Java applications to run on any device by providing an environment for executing Java bytecode.
Platform Independence: JVM allows Java programs to run on any operating system without modification.
Bytecode Execution: It interprets or compiles Java bytecode into machine code for execution.
Memory Management: JVM handles memory allocation and garbage collection automatically.
Security: It provides a secure ex...
OOP is a programming paradigm based on objects, encapsulating data and behavior, promoting code reusability and modularity.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class based on an existing class, inheriting its properties (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the same inte...
Variables can be categorized based on their scope, lifetime, and data type, impacting how they are used in programming.
1. Local Variables: Defined within a function or block, e.g., 'int x = 10;' inside a function.
2. Global Variables: Accessible throughout the program, e.g., 'int count;' defined outside any function.
3. Static Variables: Retain their value between function calls, e.g., 'static int counter = 0;' in a func...
An interface defines a contract for classes, specifying methods and properties without implementing them.
An interface can contain method signatures and properties but no implementation.
Classes that implement an interface must provide concrete implementations for all its members.
Interfaces support multiple inheritance, allowing a class to implement multiple interfaces.
Example: In Java, 'Runnable' is an interface that re...
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
OOPs focuses on creating objects that contain data and methods to manipulate that data.
It involves concepts like inheritance, encapsulation, polymorphism, and abstraction.
Example: Inheritance allows a class to inherit properties and methods from another class, promoting code reusability.
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
Allows a class to reuse code from another class
Promotes code reusability and reduces redundancy
Derived class inherits members from base class
Example: Class Car can inherit properties and methods from class Vehicle
Types of inheritance in .NET include single, multiple, multilevel, hierarchical, and hybrid inheritance.
Single inheritance: A class can inherit from only one base class.
Multiple inheritance: A class can inherit from multiple base classes (not supported in C#).
Multilevel inheritance: A class can inherit from a derived class, creating a hierarchy of classes.
Hierarchical inheritance: Multiple classes can inherit from a si...
Primary key uniquely identifies each record in a table, while unique key ensures each value in a column is unique.
Primary key does not allow NULL values, while unique key allows one NULL value.
A table can have only one primary key, but multiple unique keys.
Primary key is automatically indexed, while unique key may or may not be indexed.
Example: Primary key for a 'Students' table could be 'StudentID', while unique key c...
Structured Query Language (SQL) is a standard language for managing and manipulating databases.
SQL is used to communicate with databases to perform tasks like querying data, updating records, and creating tables.
Common SQL commands include SELECT, INSERT, UPDATE, DELETE, and CREATE.
SQL is not case-sensitive, but it is conventionally written in uppercase for keywords and lowercase for table and column names.
Printing odd numbers from a given list or range.
Iterate through the list or range of numbers
Check if each number is odd by using the modulo operator (%)
Print the odd numbers
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
Debugging techniques involve using logs to identify and fix issues in code.
Types of logs include console logs, file logs, event logs, and trace logs.
Debugging techniques include using breakpoints, stepping through code, and analyzing error messages.
Logging frameworks like log4net and NLog can be used to generate logs for debugging purposes.
I applied via Campus Placement and was interviewed in Jul 2024. There were 2 interview rounds.
Object-Oriented Programming (OOP) principles are crucial for .NET development, focusing on encapsulation, inheritance, and polymorphism.
Encapsulation: Bundling data and methods that operate on the data, e.g., a class 'Car' with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Creating a new class based on an existing class, e.g., 'ElectricCar' inherits from 'Car', adding features like 'batteryCapaci...
Reverse string ,palindrome,dsa problem
Debugging is the process of identifying and fixing errors or bugs in software code.
Identifying and isolating issues in the code
Using tools like breakpoints and print statements to track down bugs
Fixing errors to ensure the code runs correctly
Testing the code to verify that the bugs have been resolved
Debugging can be achieved by identifying and fixing errors in the code.
Use debugging tools like breakpoints to pause the code execution and inspect variables
Review the code logic and look for syntax errors or logical mistakes
Utilize logging to track the flow of the program and identify issues
Test the code with different inputs to reproduce and isolate the bugs
Collaborate with team members to get fresh perspectives on t...
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 3 interview rounds.
It is easy to solve the Aptitude question and some identifying outputs of program.
A class is a blueprint for creating objects in object-oriented programming.
A class defines the properties and behaviors of objects.
An object is an instance of a class.
Example: Class 'Car' can have properties like 'color' and 'model', and behaviors like 'drive' and 'stop'.
Swap two numbers without using temp variable and reverse a string without using built-in functions.
To swap two numbers without using temp variable, use bitwise XOR operation.
To reverse a string without using built-in functions, use two pointers approach.
Example for swapping numbers: a = a ^ b; b = a ^ b; a = a ^ b;
Example for reversing a string: use two pointers to swap characters from start and end of the string.
Now, I am preparing for the third round.
So, I don't know the Coding Question.
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