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I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
Duration is 1 hr and topic is core java
I applied via Naukri.com and was interviewed in Apr 2024. There were 2 interview rounds.
Stream API is a set of classes in Java that allow processing collections of objects in a functional style. Lambda expressions are used to write concise code for functional interfaces.
Stream API provides a way to perform operations on collections like filter, map, reduce, etc.
Lambda expressions are used to define anonymous functions in a concise way.
Example: List
Salary expectations are based on experience, skills, location, and company size.
Consider factors like years of experience, specialized skills, industry demand, and cost of living in the area.
Research average salaries for Java Developers in your location and industry.
Be prepared to negotiate based on the job responsibilities and benefits offered.
Provide a salary range rather than a specific number to allow for negotiati
I applied via Company Website and was interviewed in May 2023. There were 4 interview rounds.
Quants,logical,verbal questions were asked in this round
Gd was held within 10 participants with a abstract topic
English verbal, maths, logical questions
String,array,core java , oops
TCS iON interview questions for designations
I applied via Referral and was interviewed in Jan 2023. There were 3 interview rounds.
Wrapper classes in Java are classes that allow primitive data types to be accessed as objects.
Wrapper classes provide a way to convert primitive data types into objects.
They are used when an object is required, such as in collections or generics.
Examples include Integer for int, Double for double, Boolean for boolean, etc.
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
Encapsulation helps in hiding the internal state of an object and restricting access to it.
It allows for better control over the data by preventing external code from directly modifying it.
Example: A class 'Car' with private variables like 'model', 'year', and public methods like 'getYear()' and 'setModel()'.
HashMap is a key-value pair collection while HashSet is a collection of unique elements.
HashMap stores key-value pairs while HashSet stores unique elements.
HashMap allows duplicate values but keys must be unique, while HashSet does not allow duplicates.
HashMap uses keys to retrieve values, while HashSet does not have keys and values are the same.
Example: HashMap
Optional class is used to handle null values in Java, preventing NullPointerExceptions.
Optional class was introduced in Java 8 to provide a more elegant way of handling null values.
It encourages developers to explicitly handle the presence or absence of a value, rather than relying on null checks.
Optional class has methods like isPresent(), get(), orElse(), etc. to work with optional values.
Using Optional class can mak...
Get interview-ready with Top TCS iON Interview Questions
Reasoning and quants
Coding test questions
Group discussion practice
Case study practice
I applied via Company Website and was interviewed in Jul 2022. There were 4 interview rounds.
Mathematical and logical questions
Based on coding and programming
Oops concept in java
Object-oriented programming paradigm
Encapsulation, Inheritance, Polymorphism, Abstraction
Classes and Objects
Access Modifiers
Interfaces and Abstract Classes
OOPs concepts in C++ include inheritance, polymorphism, encapsulation, and abstraction.
Inheritance allows a class to inherit properties and methods from another class.
Polymorphism allows objects to take on multiple forms.
Encapsulation hides the implementation details of a class from other objects.
Abstraction focuses on the essential features of an object and hides the unnecessary details.
Example: A car class can inheri...
I applied via Company Website and was interviewed in Nov 2022. There were 2 interview rounds.
I was interviewed in Dec 2021.
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round with questions on Core Java concepts.
Primitive data types in Java are basic data types that are not objects.
Primitive data types include int, double, float, char, boolean, byte, short, and long.
Examples: int num = 10; double price = 19.99; char letter = 'A'; boolean flag = true;
JVM stands for Java Virtual Machine, it is an abstract computing machine that enables a computer to run Java programs.
JVM is responsible for converting Java bytecode into machine code that can be executed by the computer's processor.
It provides a platform-independent execution environment for Java programs.
JVM manages memory, handles garbage collection, and provides security features for Java applications.
Examples of J...
Java is considered object-oriented because it supports the four main principles of OOP: encapsulation, inheritance, polymorphism, and abstraction.
Java allows for the creation of classes and objects, which encapsulate data and behavior together.
Inheritance is supported in Java, allowing classes to inherit attributes and methods from other classes.
Polymorphism in Java allows objects to be treated as instances of their pa...
JIT stands for Just-In-Time compiler in Java, which compiles Java bytecode into native machine code at runtime.
JIT compiler improves the performance of Java applications by compiling bytecode into native machine code on-the-fly.
It identifies and optimizes frequently executed code paths, resulting in faster execution.
JIT compiler is a part of Java Virtual Machine (JVM) and helps in achieving high performance without the...
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Prepare Basic java questions and questions important for java.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
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