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I applied via Recruitment Consulltant and was interviewed in May 2023. There were 3 interview rounds.
HashSet provides constant time performance for basic operations like add, remove, contains, while ArrayList does not.
HashSet does not allow duplicate elements, while ArrayList allows duplicates.
HashSet does not maintain insertion order, while ArrayList maintains insertion order.
HashSet is faster for checking if an element exists (contains) compared to ArrayList.
Spring created via literal is created using curly braces with key-value pairs, while spring created via object is created using a constructor function.
Spring created via literal: var spring = { color: 'blue', length: 10 };
Spring created via object: function Spring(color, length) { this.color = color; this.length = length; }
I applied via Approached by Company and was interviewed in Mar 2023. There were 2 interview rounds.
OOPS concepts are fundamental to object-oriented programming. They include encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: bundling data and methods that operate on that data within a single unit.
Inheritance: creating new classes from existing ones, inheriting their properties and methods.
Polymorphism: the ability of objects to take on multiple forms, depending on the context.
Abstraction: hidin...
Inheritance is a way to create new classes based on existing ones. ArrayList is a dynamic array implementation in Java.
Inheritance allows a subclass to inherit properties and methods from a superclass.
ArrayList operations include adding, removing, and accessing elements.
Example of inheritance: class Dog extends Animal
Example of ArrayList operation: myList.add(element)
Spring annotations for data-jpa
The @Entity annotation is used to mark a class as a persistent entity
The @Repository annotation is used to indicate that the class provides the mechanism for storage, retrieval, search, update, and delete operation on objects
The @Transactional annotation is used to specify the transactional behavior of a method or class
The @Query annotation is used to specify a JPQL or native SQL query
The...
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posted on 18 Mar 2025
I appeared for an interview in Feb 2025, where I was asked the following questions.
I admire your company's innovative approach and commitment to quality, which aligns with my career goals and values as a developer.
Your company's focus on cutting-edge technology, like AI and machine learning, excites me as I want to work on impactful projects.
I appreciate your commitment to professional development, such as mentorship programs, which will help me grow my skills.
The collaborative culture here fosters c...
SQL constraints are rules applied to table columns to enforce data integrity and validity.
PRIMARY KEY: Uniquely identifies each record in a table. Example: `CREATE TABLE Users (UserID INT PRIMARY KEY);`
FOREIGN KEY: Ensures referential integrity between two tables. Example: `FOREIGN KEY (UserID) REFERENCES Users(UserID)`.
UNIQUE: Ensures all values in a column are different. Example: `CREATE TABLE Users (Email VARCHAR(25...
posted on 14 Feb 2022
I applied via Naukri.com and was interviewed in Jan 2022. There were 4 interview rounds.
posted on 25 Mar 2024
I appeared for an interview in Feb 2024.
posted on 22 Sep 2023
I applied via Approached by Company and was interviewed before Sep 2022. There were 2 interview rounds.
Copy constructor is a special type of constructor which creates a new object as a copy of an existing object.
Copy constructor is used to initialize a new object as a copy of an existing object.
It takes an object of the same class as a parameter.
It is called automatically when a new object is created from an existing object.
Example: class MyClass { public: MyClass(const MyClass& obj) { // copy constructor logic } };
Copy constructor is used to create a new object as a copy of an existing object, while assignment operator is used to assign values from one object to another.
Copy constructor is called when a new object is created from an existing object, while assignment operator is called when an existing object is assigned values from another object.
Copy constructor creates a new object with its own memory space, while assignment o...
A static function is a function that is associated with a class rather than an instance of the class.
Static functions can be called without creating an instance of the class.
Static functions are commonly used for utility functions that do not require access to instance-specific data.
Static functions are declared using the 'static' keyword in many programming languages.
Example: 'Math.max()' in JavaScript is a static fun
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
Start with 0 and 1 as the first two numbers in the series
Add the previous two numbers to get the next number in the series
Repeat this process to generate the Fibonacci series
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
Ensures a class has only one instance
Provides a global point of access to that instance
Commonly used in scenarios where only one instance of a class is needed, such as database connections or logging
posted on 14 Dec 2024
I applied via Naukri.com and was interviewed before Dec 2023. There were 2 interview rounds.
Virtual inheritance allows a derived class to inherit from a base class without creating duplicate base class subobjects.
Virtual inheritance is used to resolve the Diamond Problem in C++ where a class inherits from two classes that have a common base class.
It ensures that only one copy of the base class is inherited by the derived class.
Virtual inheritance introduces a virtual base class subobject to the derived class,...
A class for string operations can include methods for concatenation, substring extraction, length calculation, etc.
Create a class with methods like concatenateStrings, extractSubstring, calculateLength, etc.
Use string manipulation functions like substring, concat, length, etc. within the class methods.
Ensure error handling for edge cases like empty strings or out-of-bounds indices.
Example: class StringOperations { conc...
Accessing id parameter in URL involves parsing the URL and extracting the id value.
Use the window.location object to access the URL of the current page.
Parse the URL using methods like split() or URLSearchParams to extract the id parameter.
Example: If the URL is 'http://example.com/page?id=123', you can access the id value by parsing the URL.
posted on 6 Mar 2024
I applied via Recruitment Consulltant and was interviewed before Mar 2023. There was 1 interview round.
Asked to create a login form using MVVM architecture with frontend WPF and backend C#
posted on 19 Apr 2024
Association, aggregation, and composition are types of relationships between classes in object-oriented programming.
Association is a relationship where two classes are connected, but not dependent on each other.
Aggregation is a type of association where one class contains another class, but the contained class can exist independently.
Composition is a stronger form of aggregation where the contained class is part of the
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