NIIT Software Developer Interview Questions and Answers

Q1. What is method overloading?
Ans. 
Method overloading is when multiple methods in a class have the same name but different parameters.
• Allows multiple methods with the same name but different parameters to be defined in a class

• Parameters can differ in number, type, or order

• Example: void print(int num) and void print(String text) are overloaded methods
Answered by AI
Add your answer
Q2. What is method overiding ?
Ans. 
Method overriding is a feature in object-oriented programming that allows a subclass to provide a specific implementation of a method that is already provided by its superclass.
• Method overriding is done when a subclass provides a specific implementation for a method that is already defined in its superclass.

• The method in the subclass must have the same name, return type, and parameters as the method in the superclass.

• M...read more
Answered by AI
Add your answer
Q3. What is sigleton class ?
Ans. 
A singleton class is a class that can only have one instance created and provides a global point of access to that instance.
• Singleton classes are often used for logging, caching, database connections, and thread pools.

• They typically have a private constructor to prevent instantiation from outside the class.

• The class itself usually provides a static method to access the single instance.
Answered by AI
Add your answer

Q1. What are Oops Pillars?
Ans. 
Oops Pillars are the four main concepts of Object-Oriented Programming: Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundles data and methods into a single unit, protecting data from outside interference.

• Polymorphism: Allows objects to be treated as instances of their parent class, enabling flexibility in code.

• ...read more
Answered by AI
Add your answer
Q2. What is Dependency injection?
Ans. 
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Allows for easier testing by mocking dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: Constructor injection, Setter injection, Interface injection
Answered by AI
Add your answer

Q1. Coding question: Given a sorted array of numbers. All numbers have freq of 2 in array except one number. Find that number with T.C of logn
Ans. 
Find the single number in a sorted array with frequency of 2 for all other numbers.
• Use binary search to find the number with different frequency.

• Check if the mid element is at even or odd index to determine which side to search next.

• Example: Input array [1, 1, 2, 2, 3, 3, 4, 4, 5] should return 5.
Answered by AI
Add your answer
Q2. Print left view of tree
Ans. 
Print the left view of a tree by traversing the tree from left to right at each level
• Traverse the tree using level order traversal

• Print the first node at each level encountered during traversal
Answered by AI
Add your answer

Q1. Detailed discussion on projects
Add your answer
Q2. Questions on O.S like about deadlocks,etc..
Add your answer

Q1. About myself and my working skills and my previous experience
Add your answer
Q2. What is expected salary
Add your answer
Q3. Are willing to reloacte
Ans. 
Yes, I am willing to relocate for the right opportunity.
• I am open to relocating for a position that aligns with my career goals

• I have relocated for previous job opportunities and am comfortable with the process

• I understand the importance of being flexible and adaptable in the tech industry
Answered by AI
Add your answer

C#,Dotnet MVC,Webform ,sql server, write code ,they give task ask about and explanation.

Q1. Policy term and conditions and expectation
Add your answer
Q2. Why i am leaving privious organization
Add your answer

Q1. Basic questions for ADF
Add your answer

Q1. Basic HR round for CTC and notice period
Add your answer

Good with easy questions

Q1. Questions around my projects
Add your answer

Q1. Salary discussion round with HR
Add your answer

Q1. General information about previous job role.
Add your answer

Q1. Domain knowledge question
Add your answer

Q1. Selenium based questions
Add your answer
Q2. Selenium RC based questions
Add your answer