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Revature Senior Java Developer Interview Questions and Answers
Revature Senior Java Developer Interview Experiences
1 interview found
I was interviewed in Dec 2024.
1. String input="aaabccccbbbdd";
Find how many a, b, c, d are there in the string. Did using java streams.
2.HashMap
hm.put(55,"B");
hm.put(33,"Z");
hm.put(44,"M");
hm.put(99,"I");
hm.put(88,"X");
Sort this hashmap based on values(B, I, M, X, Z). Should be done using java streams.
3.List lists = Arrays.asList(Arrays.asList(1,2,3), Arrays.asList(2,3,4,5), Arrays.asList(5,7,8));
Question was wrong actually. But expectation is to do flatmap and print without duplicates.
Query:
get 3rd highest salary from employee table
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Interview questions from similar companies
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Lookup vs graphlookup in mongodb
- Ans.
Lookup is used to perform a left outer join in MongoDB, while graphlookup is used to perform recursive graph traversal.
Lookup is used to perform a left outer join between two collections in MongoDB.
Graphlookup is used to perform recursive graph traversal in a collection that contains graph data.
Lookup can only perform a single level join, while graphlookup can perform multiple levels of traversal.
Lookup is faster than
- Q2. Count frequency of each character in string
- Ans.
Use a hashmap to count the frequency of each character in a string.
Create a hashmap to store characters as keys and their frequencies as values.
Iterate through the string and update the hashmap accordingly.
Return the hashmap with character frequencies.
(2 Questions)
- Q1. Create a rest api all the way from controller to repository using NOTEPAD
- Ans.
Creating a REST API from controller to repository using NOTEPAD
Create a controller class with mapping annotations for REST endpoints
Implement service layer to handle business logic and interact with repository
Define repository interface with methods for data access operations
Use Spring Boot for easy setup and configuration
Test API endpoints using tools like Postman
- Q2. Couldnt write custom mongodb query at repository layer in notepad which rejected my candidature.
Skills evaluated in this interview
Senior Java Developer Interview Questions & Answers
Reserve Bank Information Technology
Anonymous
posted on 10 Feb 2024
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There were 3 interview rounds.
Paper Test MCQs(Hibernate, Multithreading, Quantative Apptitute, Logical Reasoning,English Grammer check)
(1 Question)
- Q1. Basic string questions Spring boot questions
(1 Question)
- Q1. Project disscussion Questions related to the project Java 8 Stream questions
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
(1 Question)
- Q1. Spring boot migration
(1 Question)
- Q1. Will you be flexible?
Vipul Sharma
I applied via campus placement at G L Bajaj Institute of Technology & Management, Greater Noida and was interviewed in Oct 2024. There were 3 interview rounds.
They asked some general Quantitative and logical questions and code snippets.
(2 Questions)
- Q1. String Reverse and Two Sum
- Q2. Related to my projects and Tech Stacks
(2 Questions)
- Q1. This is the Second technical round. The interviewer asked about everything from my project.
- Q2. Asked some sql queries like joins and set operation
Interview Preparation Tips
I applied via Job Portal and was interviewed in Sep 2024. There were 4 interview rounds.
2 DSA question was asked
40 questions in 20 minutes
(2 Questions)
- Q1. Stones games 2 leetcode
- Q2. Permutations of array
- Ans.
Generate all possible permutations of an array of strings
Use recursion to generate permutations
Swap elements to create different permutations
Base case: when array size is 1, return array as permutation
(1 Question)
- Q1. Project discussion
Skills evaluated in this interview
Software Developer Interview Questions & Answers
CBTS TECHNOLOGY SOLUTIONS INDIA LLP
GOKULA KRISHNAN
posted on 25 Jul 2024
It was easy, the topic is upi
Aptitude + coding Test
(2 Questions)
- Q1. It's about my projects
- Q2. And few Javascript questions
(1 Question)
- Q1. General HR questions
Software Developer Interview Questions & Answers
Saama Technologies
mallikarjuna kukatikonda
posted on 19 Sep 2024
I applied via Job Portal
60mintues DSA level coding exam
Software Developer Interview Questions & Answers
Terralogic Software Solutions
KAMLESH KUMAR
posted on 1 Apr 2024
Selected
I was interviewed in Oct 2023.
(1 Question)
- Q1. Difference between list and map
- Ans.
List is an ordered collection of elements, while map is a collection of key-value pairs.
List maintains the order of elements, while map does not guarantee any specific order.
List allows duplicate elements, while map does not allow duplicate keys.
In a list, elements are accessed by their index, while in a map, elements are accessed by their keys.
Skills evaluated in this interview
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Lookup vs graphlookup in mongodb
- Ans.
Lookup is used to perform a left outer join in MongoDB, while graphlookup is used to perform recursive graph traversal.
Lookup is used to perform a left outer join between two collections in MongoDB.
Graphlookup is used to perform recursive graph traversal in a collection that contains graph data.
Lookup can only perform a single level join, while graphlookup can perform multiple levels of traversal.
Lookup is faster than
- Q2. Count frequency of each character in string
- Ans.
Use a hashmap to count the frequency of each character in a string.
Create a hashmap to store characters as keys and their frequencies as values.
Iterate through the string and update the hashmap accordingly.
Return the hashmap with character frequencies.
(2 Questions)
- Q1. Create a rest api all the way from controller to repository using NOTEPAD
- Ans.
Creating a REST API from controller to repository using NOTEPAD
Create a controller class with mapping annotations for REST endpoints
Implement service layer to handle business logic and interact with repository
Define repository interface with methods for data access operations
Use Spring Boot for easy setup and configuration
Test API endpoints using tools like Postman
- Q2. Couldnt write custom mongodb query at repository layer in notepad which rejected my candidature.
Skills evaluated in this interview
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