Virtusa Consulting Services Software Developer Interview Questions, Process, and Tips

Q1. What is Oops with examples
Ans. 
Object-oriented programming (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.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation: Objects can hide their internal state and require interaction through well-defined interfaces

• Inheritance: Objects can inherit attributes and methods from o...read more
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Q2. What are the joins
Ans. 
Joins are used in SQL to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the righ...read more
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Two code and multiple choice questions

Q1. It was around 45 minutes
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Q2. Core java related questions
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Q1. Only salary discussion
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Q1. What is OOps concept
Ans. 
Object-oriented programming paradigm focusing on objects and classes for code organization and reusability.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

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

• Polymorphism: Ability for objects to be treated as instances of their parent class or their own class

• Abstraction: Hiding complex impleme...read more
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Q2. What is java 8
Ans. 
Java 8 is a major release of the Java programming language with new features like lambda expressions, streams, and functional interfaces.
• Introduced lambda expressions for functional programming

• Added streams API for processing collections

• Included default methods in interfaces for backward compatibility

• Introduced new Date and Time API (java.time package)
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Q1. Asked about general questions
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Q1. Find the 2nd largest element in an array with O(n) time complexity
Ans. 
Use a single pass algorithm to find the 2nd largest element in an array.
• Iterate through the array and keep track of the largest and second largest elements.

• Initialize two variables to store the largest and second largest elements.

• Compare each element with the largest and second largest elements and update accordingly.

• Return the second largest element at the end of the iteration.
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Q2. Basics about Core Java , Spring boot
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Q1. All aptitude, verbal, quantitative, technical mcqs
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Recurrsion,arrays, numerical string

Q1. Self introduction
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Q2. Basic topics in language
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Q1. Simple questions
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Q1. Difference between linkedlist and arry list
Ans. 
LinkedList is a data structure where elements are stored in nodes with pointers to the next element, while ArrayList is a dynamic array that can resize itself.
• LinkedList uses nodes with pointers to the next element, allowing for efficient insertion and deletion operations.

• ArrayList is a dynamic array that can resize itself, making it faster for random access but slower for insertion and deletion.

• LinkedList is more memo...read more
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Q2. What is @configuration
Ans. 
Annotation used in Spring framework to indicate that a class declares one or more @Bean methods
• Used in Spring framework to define configuration classes

• Identifies a class as a source of bean definitions for the application context

• Helps Spring to understand how beans are created and wired together
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