Foundit Senior Software Engineer Interview Questions and Answers

Java code based on java 8 stream api

Q1. Java questions and basics of testing
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It was a test to create a login page and connect to database

Q1. What is difference between interface and abstract class
Ans. 
Interface is a contract with no implementation, while abstract class can have some implementation.
• Interface cannot have any implementation, only method signatures

• Abstract class can have both abstract methods and concrete methods

• A class can implement multiple interfaces but can only inherit from one abstract class

• Interfaces are used to achieve multiple inheritance in Java
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Q2. What are main concepts of oops
Ans. 
Main concepts of OOP include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• 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 the complex implementation details and showing only the nec
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Q1. String Interpolation and string related methods
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Q1. Find the duplicate in the string
Ans. 
Use a hash set to find duplicates in a string array
• Iterate through the array and add each element to a hash set

• If the element is already in the hash set, it is a duplicate
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Q2. Reverse the string
Ans. 
Reverse a given string
• Create an empty string to store the reversed string

• Iterate through the original string from end to start and append each character to the new string

• Return the reversed string
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Q1. Basic definitions and project related queries
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Q1. About Insurance Domain Knowledge
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Q1. About shift / Working hrs / Salary
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Q1. Overall spring boot related questions
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Q2. Java 8 stream api
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