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Peel-works Java Developer Interview Questions and Answers
Peel-works Java Developer Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed before Sep 2021. There were 3 interview rounds.
(4 Questions)
- Q1. The internal implementation of HashMap.
- Ans.
HashMap is a data structure that stores key-value pairs and uses hashing to retrieve values.
HashMap uses an array of linked lists to store key-value pairs
The hash code of the key is used to determine the index of the array
If multiple keys have the same hash code, they are stored in the same linked list
HashMap uses load factor to determine when to resize the array
The default load factor is 0.75
HashMap allows null keys a
- Q2. The internal implementation of HashSet. We only put value in HashSet then how HashSet internally uses HashMap.
- Q3. What is the difference between HashMap and HashSet?
- Ans.
HashMap is a key-value pair collection while HashSet is a set of unique elements.
HashMap allows duplicate values but not duplicate keys
HashSet does not allow duplicate values
HashMap implements Map interface while HashSet implements Set interface
HashMap uses put() method to add elements while HashSet uses add() method
Example: HashMap
set = new HashSet<>();
- Q4. What is the difference between Local Variable, static variable, and instance variable?
- Ans.
Local, static, and instance variables differ in their scope and lifetime.
Local variables are declared inside a method and have a limited scope.
Static variables belong to the class and are shared among all instances.
Instance variables are unique to each object and can be accessed using the object reference.
Write a java program to convert numbers to strings.
for example:
10: TEN,
1559: One Thousand Five Hundred Fifty Nine.
(1 Question)
- Q1. Only Salary discussion
Interview Preparation Tips
- Core Java
- SQL
- JDBC
- Java Servlets
- Framework
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
(1 Question)
- Q1. Implement tail f
Interview Preparation Tips
Aptitude question based on time speed and logic
(1 Question)
- Q1. Ques on linked list and some more coding ques
I was interviewed in Jul 2024.
SQL questions (30 mins)
SqL engines, Inno db
some basic sql queries
optimization technique
DSA and Java Concepts(30 mins)
2 pointer and sliding window questions.
Basic questions over spring boot
Managerial round(1 hr)
Previous work experience
writing some basic APIs
Questions on Map
DSA question, sort an array in O(n) consisting of 0s and 1s.
Selected
I applied via Company Website and was interviewed before Aug 2023. There were 2 interview rounds.
(1 Question)
- Q1. Express yourself
(1 Question)
- Q1. Technical knowledge tested well.
Interview Preparation Tips
Prepare well
Selected
I applied via Referral and was interviewed in Jan 2023. There were 4 interview rounds.
It was both aptitude and coding test.
Comprises of around same weightage.
Coding questions were some famous easy questions.
(3 Questions)
- Q1. Most of the coding questions were from Linked list. Few from database and SQL.
- Q2. Adding a node in LinkedList, removal of a duplicate node in LinkedList.
- Ans.
Adding a node in LinkedList involves creating a new node and updating pointers. Removing a duplicate node requires iterating through the list and comparing values.
To add a node, create a new node with the desired value and update pointers accordingly.
To remove a duplicate node, iterate through the list and compare each node's value with others to identify duplicates.
After identifying a duplicate node, update pointers t
- Q3. A query to give the sum of salary of common department.
(1 Question)
- Q1. A bit conceptual round. A Linked list question and few HR questions.
Skills evaluated in this interview
I applied via Referral and was interviewed in Feb 2024. There were 3 interview rounds.
Implement tail -f command
(2 Questions)
- Q1. Kafka partitions
- Q2. Elasticsearch queries
(2 Questions)
- Q1. Why Browserstack?
- Ans.
Browserstack is a popular cloud-based cross-browser testing tool used by developers worldwide.
Provides access to a wide range of browsers and devices for testing
Allows for parallel testing to save time and increase efficiency
Integrates with popular testing frameworks like Selenium and Appium
Offers features like screenshots, video recordings, and debugging tools
Used by companies like Microsoft, Twitter, and Airbnb for t
- Q2. Any challenge you faced at current company?
- Ans.
Yes, I faced a challenge in integrating a new third-party API with our existing system.
Had to understand the documentation of the API thoroughly
Encountered compatibility issues with our system
Worked closely with the API provider to troubleshoot and resolve issues
Software Developer Interview Questions & Answers
Jumbotail Technologies
Anonymous
posted on 12 Feb 2024
(2 Questions)
- Q1. Problem solving
- Q2. Basic js question
System design - ecommers website and project related
Js + react js questions
(1 Question)
- Q1. Tell me about your self Where do see your self in next 5 years What was your role in previous company
Interview Preparation Tips
Br is very friendly
Manager round went well
Software Developer Interview Questions & Answers
Shadowfax Technologies
Anonymous
posted on 23 Aug 2024
(2 Questions)
- Q1. Tell what is your name
- Ans.
My name is John Smith.
Full name is John Smith
Common name in English-speaking countries
No middle name or initial
- Q2. What do you do in free time
- Ans.
In my free time, I enjoy hiking, playing video games, and learning new programming languages.
Hiking in local trails and national parks
Playing video games like Overwatch and Minecraft
Learning new programming languages like Python and JavaScript
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