Reliance Retail Java Developer Interview Questions and Answers for Experienced

Q1. Why string arr immutable
Ans. 
String arrays are immutable because they cannot be changed once created.
• Strings in an array cannot be modified individually

• Any changes to a string array result in a new array being created

• Immutable arrays ensure data integrity and prevent unintended side effects
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Q2. How we can create a custom immutable class
Ans. 
To create a custom immutable class, use final keyword for class, private final fields, and no setter methods.
• Use the final keyword for the class to prevent inheritance

• Declare all fields as private and final to prevent modification

• Do not provide setter methods for the fields to maintain immutability

• Provide getter methods to access the fields
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The test was quite simple but the interviewer was not ready to accept the solution. Even with complete dry run and working output he denied the solution giving a very vague reason.

Q1. In this design round , they asked me to demonstrate how to build cowin app. Gave a complete overview including HLD and LLD for each showcased feature still got negative response.
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Basic java question, design questions, 1 data structure question

Q1. Asked puzzle and previous project experience
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Q2. Monitor microservices using Spring actuator
Ans. 
Spring Actuator provides endpoints to monitor and manage microservices in a Spring Boot application.
• Add Spring Boot Actuator dependency in pom.xml

• Enable Actuator endpoints in application.properties or application.yml

• Access Actuator endpoints like /actuator/health, /actuator/info, etc.

• Customize Actuator endpoints using configuration properties
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Q3. How webflux works
Ans. 
Webflux is a reactive programming framework for building non-blocking, event-driven applications on the JVM.
• Webflux is part of the Spring Framework and provides support for reactive programming.

• It allows developers to build asynchronous, non-blocking applications that can handle a large number of concurrent connections.

• Webflux uses Project Reactor, a reactive library for building reactive applications.

• It supports both ...read more
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Q1. Related to project
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Q2. Deployment and maintenance
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Basic javascript dsa questions

Q1. What is your name?
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Q2. My is gurasala bhoomika
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Q3. What is your hobbies?
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Q4. Watching TV, listing music
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Q5. Explain finally year study?
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Q6. I have studying audisankara institute of technology in guduru
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Q7. Explain about intermediate ?
Ans. 
Intermediate refers to a level of proficiency or knowledge that falls between beginner and advanced.
• Intermediate level typically involves a deeper understanding of concepts and the ability to apply them in practical scenarios.

• Individuals at an intermediate level may have some experience in the field but still have room for growth and learning.

• Examples of intermediate skills include proficiency in a programming language...read more
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Q8. I have completed my intermediate in Narayanganj junior college in tirupati
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Q9. Explain about ur SCC ?
Ans. 
SCC stands for Source Code Control. It is a system used to manage and track changes to source code files.
• SCC helps developers collaborate on code by providing version control and tracking changes.

• Popular SCC tools include Git, SVN, and Mercurial.

• SCC allows developers to revert to previous versions of code, track changes made by team members, and merge code changes seamlessly.

• SCC helps in maintaining code integrity and ...read more
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Q10. I have studied in nice English medium school In VarAdaiahpalem
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Q11. What is your favourite colour ?
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Q12. Who is your favourite teacher?
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Q13. My favourite teacher is prasanna sir
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Q14. What is your short term goal?
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Q15. I want become a software developer
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Q16. What is achievement?
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Q17. I have got prices in 8 th
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Q18. Which topic do you get?
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Q19. Story telling topic
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Q20. What is ur strength ?
Ans. 
My strength lies in my problem-solving skills and ability to learn quickly.
• Strong problem-solving skills

• Quick learner

• Adaptability to new technologies

• Ability to work well under pressure
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Q21. My knowledge is my power Communication skills Smart work
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Q22. What can support you?
Ans. 
Support from my team, access to resources, clear communication
• Support from my team helps me stay motivated and overcome challenges

• Access to resources such as training materials and tools enables me to perform my job effectively

• Clear communication ensures that I understand project requirements and expectations
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Q23. My teachers,my brother
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Q24. What is popular temple in ur village?
Ans. 
The popular temple in my village is the Sri Ranganathaswamy Temple.
• Located in the heart of the village

• Dedicated to Lord Ranganatha

• Annual festivals and rituals attract devotees from neighboring villages
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Q25. The popular temple is god shiva
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Q26. How many languages do know?
Ans. 
I am proficient in 5 programming languages including Java, Python, C++, JavaScript, and SQL.
• Java

• Python

• C++

• JavaScript

• SQL
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Q27. I know Telugu, hindi
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Q28. What is the best in you?
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Q29. I can do smart work
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Q30. Why want hire you?
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Q31. I can communicate with people well manner
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Q32. What is the best memory in frist year?
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Q33. My birthday can do well
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Q34. What much salary expectations?
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Q35. I expections 4000
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Q36. What can do frist salary?
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Q37. I enjoy my self.i go to my parents
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60m, Data structure and algo

Q1. Leetcode - smallest palindrome, Lowest common ancestor
Ans. 
Find the smallest palindrome and lowest common ancestor in a given tree
• To find the smallest palindrome, iterate through the string and check if it is a palindrome. Return the smallest one found.

• To find the lowest common ancestor in a tree, use a recursive approach to traverse the tree and find the common ancestor of two nodes.
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Questions related to oops, java and OS were asked

Question 1 was on tree data structure
Question 2 was on bit manipulation

Q1. Search engine system design
Ans. 
Designing a search engine system involves creating algorithms for indexing, ranking, and retrieving relevant information.
• Consider using inverted index for efficient searching

• Implement ranking algorithms like PageRank or TF-IDF

• Utilize web crawlers to gather and index web pages

• Include features like autocomplete and spell correction for user-friendly experience
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