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I applied via Referral and was interviewed in Jan 2024. There were 2 interview rounds.
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, fields, and methods, while interface cannot have any of these.
A class can implement multiple interfaces but can only inherit from one abstract class.
Abstract classes are used to provide a common base for multiple classes, while interfaces are used to define a contract for ...
OOP Concepts refer to the principles of Object-Oriented Programming, including encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: Bundling data and methods that operate on the data into a single unit (object).
Inheritance: Allowing a class to inherit properties and behavior from another class.
Polymorphism: The ability for objects of different classes to respond to the same message in different ways...
Database queries involve retrieving, updating, and manipulating data stored in a database.
Database queries are used to retrieve specific data from a database based on certain criteria.
Queries can also be used to update existing data or insert new data into the database.
SQL (Structured Query Language) is commonly used to write database queries.
Examples of database queries include SELECT, INSERT, UPDATE, and DELETE state
I applied via Approached by Company and was interviewed in Jan 2024. There was 1 interview round.
The final class and method are used to prevent inheritance and method overriding respectively.
Final class: A final class cannot be subclassed. It is often used for utility classes or classes that should not be extended.
Final method: A final method cannot be overridden by subclasses. It is used to prevent modification of a method's behavior in subclasses.
Find duplicate numbers in an array of strings.
Iterate through the array and keep track of the count of each number using a hash map.
If the count of a number is greater than 1, it is a duplicate.
Return the list of duplicate numbers.
The output will be the literal string of the variable, without any variable interpolation.
When a variable is echoed in single quotes, it is treated as a literal string.
No variable interpolation or special characters are interpreted.
The output will include the variable name itself, not its value.
Object-oriented programming (OOP) is a programming paradigm that uses objects to represent and manipulate data.
OOP is based on the concept of classes and objects.
It focuses on encapsulation, inheritance, and polymorphism.
Encapsulation hides the internal details of an object and provides a public interface.
Inheritance allows classes to inherit properties and methods from other classes.
Polymorphism allows objects of diff...
The HAVING clause is used in MySQL to filter the results of a GROUP BY query based on a condition.
The HAVING clause is similar to the WHERE clause, but it operates on grouped rows rather than individual rows.
It is used in conjunction with the GROUP BY clause.
The HAVING clause is used to filter the results of a GROUP BY query based on a condition that applies to the grouped rows.
It is typically used to specify condition...
I applied via Referral and was interviewed before Apr 2021. There were 2 interview rounds.
A company designed the test basically to understand the nature of the interviewee. Simple test.
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I applied via Monster and was interviewed before Nov 2020. There was 1 interview round.
I applied via Naukri.com and was interviewed in Jan 2021. There were 4 interview rounds.
I applied via Company Website and was interviewed before Mar 2021. There were 3 interview rounds.
Java assesment.
I applied via Walk-in and was interviewed in Jul 2019. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before Jan 2021. There was 1 interview round.
ArrayList and LinkedList are both data structures used to store and manipulate collections of objects in Java.
ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list.
ArrayList provides constant time access to elements using their index, while LinkedList provides constant time insertion and deletion of elements.
Spring Boot annotations include @Controller, @Service, @Reposit...
Truncate removes all data from a table while delete removes specific rows.
Truncate is faster than delete as it doesn't log individual row deletions
Truncate resets auto-increment values while delete doesn't
To truncate a table in MySQL, use the TRUNCATE TABLE statement
Methodology used in my project was Agile
I applied via Recruitment Consultant and was interviewed in Jan 2021. There were 3 interview rounds.
let vs var in JavaScript and hosting
let has block scope while var has function scope
let cannot be redeclared in the same scope while var can
Hosting is the process of moving a website or application to a server
JavaScript can be hosted on various platforms such as AWS, Heroku, and Firebase
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