Ninestars Information Technologies Software Engineer Interview Questions and Answers

Q1. Data structure [Array]
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Q2. Core JAVA questions[ exception handling , OOPS , Collections Framework ]
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Q3. JDBC and SQL questions
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Q1. Project discussion
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Q2. Tell me one scenerio under which you did development
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There were simple aptitude questions and core java MCQS

Q1. What's OOPs concept
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OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding th...read more
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Q2. Explain Inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can override or extend the functionality of the base class

• Example: Class 'Car' can inherit from class 'Vehicle' and inh...read more
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Q3. Basic Java output questions
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Q1. Interviewer asked me to introduce and then he asked about my education and family details and then he told me about company.
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Basic coding along with general aptitude

Q1. What is oops describe with real time example?
Ans. 
OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPs focuses on creating objects that interact with each other to solve a problem

• Encapsulation: Objects encapsulate data and behavior. Example: Car object with properties like color and methods like start()

• Inheritance: Objects can inherit attributes and methods from other objects. Example: Anima...read more
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Q2. Describe about data structures with real time examples?
Ans. 
Data structures are ways to organize and store data efficiently in a computer.
• Data structures are used to store and organize data in a way that makes it easy to access and manipulate.

• Examples of data structures include arrays, linked lists, stacks, queues, trees, and graphs.

• For example, an array is a data structure that stores a collection of elements in a contiguous block of memory.

• A linked list is a data structure wh...read more
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Q3. What makes you different from other candidates?
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Q1. Why do you choose happiest minds ?
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Q2. Why should we hire you?
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Q1. What is Observables, Services, Promises, Closure ?
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Q1. What is your name
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Q2. What is your strength
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Q1. Oops concepts,interface and abstract class
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Q1. Area of circle program
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Program to calculate the area of a circle
• The formula to calculate the area of a circle is: A = π * r^2

• The radius of the circle is required as input

• The value of π can be approximated as 3.14159

• The area should be calculated and displayed as output
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Q1. Python questions
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