FIS Interview Questions, Process, and Tips

Q1. Shared a piece of code from project and asked to provid review comments and wYs to improve
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Q1. Self introduction
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Q2. About company rules
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Q3. And rotational weekoffs
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Q4. Is it ok to work 6 days
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Q5. Its temporary work
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Q1. All scenario based questions. Performance optimizaition of an API, Data Structure based questions.
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Medium level DSA question

Q1. Questions based on Java and Spring Boot. Make sure your all basics are cleared.
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Done the aptitude test before the interview

Q1. What is hashmap and its usage
Ans. 
HashMap is a data structure that stores key-value pairs and provides fast retrieval of values based on their keys.
• HashMap is part of the Java Collections Framework.

• It allows null values and null keys.

• Keys must be unique, but values can be duplicated.

• HashMap uses hashing to store and retrieve elements efficiently.

• It provides constant-time performance for basic operations like get, put, and remove.

• Example: HashMap
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Q2. What is java 8 features
Ans. 
Java 8 introduced several new features including lambda expressions, streams, and default methods.
• Lambda expressions enable functional programming in Java.

• Streams provide a new way to process collections of data.

• Default methods allow adding new methods to interfaces without breaking existing implementations.
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Q1. Oops concepts, solid principle, sqlcquery
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Q2. Solid principle
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