BNP Paribas Fullstack Java Developer Interview Questions and Answers

Q1. What are the various methods to implement pagination using ReactJS, and what are the best practices to enhance performance on the user interface?
Ans. 
Explore methods for implementing pagination in ReactJS and best practices for UI performance enhancement.
• 1. Client-Side Pagination: Load all data at once and paginate on the client side using libraries like 'react-paginate'.

• 2. Server-Side Pagination: Fetch data in chunks from the server based on the current page, reducing initial load time.

• 3. Infinite Scrolling: Load more data as the user scrolls down, using libraries ...read more
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Q2. What are the Java design patterns utilized in your current project?
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Q3. What is the process for deploying a Spring Boot application on AWS S3?
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Deploying a Spring Boot application on AWS S3 involves packaging, configuring, and uploading the application to S3.
• Package the Spring Boot application as a JAR or WAR file using Maven or Gradle.

• Create an S3 bucket in the AWS Management Console to store the application.

• Upload the packaged JAR/WAR file to the S3 bucket using the console or AWS CLI.

• Set appropriate permissions for the S3 bucket to allow public access if ne...read more
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Have a try with Hacker Rank before going

Q1. Technical knowledge is expected
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It was live coding round plus technical discussion.
Asked about java concept in depth
Medium level java coding ques
If you have devops knowledge thats a plus
Asked basic concept of angular framework

Q1. Second was a manger round get a good knowledge of your project both technically and architecture wise
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Q1. Last was a bar raiser round where a senior person mostly ask you about your experience, challenges faced , what are your aspirations. Basically its purely based on your journey in it industry
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Q1. Just basic salary discussion What are my expectation .negotiate well😉
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Q1. Past Experience
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Q2. About project, Java Concepts, Spring boot concepts, Cloud questions and one coding question
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One-on-one coding discussion problem.

Coding problem and 1-2 discussing

Coding statement and 1-1 discussions

Q1. Coding questions
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Q1. Coding problems and dsa
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Q1. Prepare for core Java, java 8
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Q2. Flatmap implementation
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Flatmap implementation in Java is used to transform each element of a stream into a new stream and then concatenate the resulting streams into a single stream.
• Flatmap is a method in Java that takes a function as an argument and applies it to each element of a stream, resulting in a new stream.

• It is commonly used to deal with nested collections or to flatten a collection of collections.

• Example: List<List<Integer&g...read more
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Q1. Design pattern and solid principle
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Q1. Profile based /process related
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Q1. Profile based/Process related
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Q1. What are your salary expectations?
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Q2. Why should we hire you?
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Q3. Why are you looking for a change?
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Q4. Compensation negotiation
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