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Infosys
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I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
OOPs concept in JAVA refers to Object-Oriented Programming principles like encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: Bundling data and methods that operate on the data into a single unit (object).
Inheritance: Allows a class to inherit properties and behavior from another class.
Polymorphism: Ability of a method to do different things based on the object it is acting upon.
Abstraction: Hidin...
Memory management in JAVA involves allocation, usage, and deallocation of memory for objects and variables.
Java uses automatic memory management through garbage collection
Memory is allocated on the heap for objects and on the stack for local variables
Java Virtual Machine (JVM) manages memory allocation and deallocation
Memory leaks can occur if objects are not properly dereferenced
Reflection in Java allows programs to inspect or modify their own structure at runtime.
Reflection allows access to class information, fields, methods, and constructors at runtime.
It is commonly used in frameworks like Spring and Hibernate for dependency injection and ORM.
Example: Using reflection to dynamically load classes or invoke methods based on user input.
I applied via Naukri.com and was interviewed in Feb 2022. There were 2 interview rounds.
We implemented a new project management software which improved communication and task tracking.
Implemented project management software
Improved communication and task tracking
Reduced errors and delays in project completion
Increased efficiency and productivity
Example: Used Asana to manage tasks and deadlines for a construction project
I implemented a solution using the tool by first analyzing the problem and then designing a plan of action.
Identified the problem and its requirements
Researched and selected the appropriate tool
Designed a plan of action and implemented the solution
Tested and evaluated the solution for effectiveness
Documented the process and provided training to users
I applied via LinkedIn and was interviewed in Mar 2022. There were 2 interview rounds.
It will be a bit hard. But it contains some basic algorithm questions pseudo solving nd problem solving
I applied via LinkedIn and was interviewed in Mar 2022. There were 2 interview rounds.
It will be a bit hard. But it contains some basic algorithm questions pseudo solving nd problem solving
Infosys interview questions for designations
I applied via Company Website and was interviewed in Jun 2022. There was 1 interview round.
I applied via Naukri.com and was interviewed in Mar 2022. There were 3 interview rounds.
I applied via Recruitment Consulltant and was interviewed in Mar 2022. There were 2 interview rounds.
Problems on directions and puzzles
What people are saying about Infosys
It had a 2 programs with easy and medium level of coding programs, please go through the recent interview problems asked in wipro
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
OOP focuses on creating objects that interact with each other to solve problems
Encapsulation, inheritance, and polymorphism are key principles of OOP
Examples of OOP languages include Java, C++, and Python
Multi threading is a programming concept where multiple threads within a process execute independently to improve performance.
Allows for concurrent execution of tasks within a single process
Improves performance by utilizing multiple CPU cores
Requires careful synchronization to avoid race conditions
Examples include web servers handling multiple requests simultaneously
Java is not 100% OOP because it supports primitive data types and static methods.
Java has primitive data types like int, double, etc. which are not objects.
Java allows static methods which do not require an instance of a class to be called.
Java also has the concept of wrapper classes to convert primitive data types to objects.
Collections in Java are classes and interfaces that provide a way to store and manipulate groups of objects.
Collections provide dynamic data structures like List, Set, and Map.
They offer methods to add, remove, and manipulate elements in the collection.
Examples include ArrayList, LinkedList, HashSet, and HashMap.
A hash map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
Hash map uses a hash function to determine the index of the key-value pair in the underlying array.
Collision resolution techniques like chaining or open addressing are used to handle situations where multiple keys hash to the same index.
Hash maps typically have O(1) average time complexity for i...
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