Bitwise Solutions Senior Web Developer Interview Questions, Process, and Tips

Q1. Implement a custom stack that allows fetching the minimum element in constant time, O(1).
Add your answer
Q2. How can one create an immutable class named Employee with fields for name and hobbies defined as List?
Add your answer
Q3. What changes are required in the Employee class to use it as a key for a HashMap?
Add your answer
Q4. What is the implementation of the singleton design pattern?
Add your answer
Q5. Different ways to create a thread
Add your answer
Q6. What are the SOLID principles in software design, and can you provide examples for each?
Add your answer

Q1. What is the concept of Object-Oriented Programming (OOP) and can you provide an example?
Add your answer
Q2. How do threads communicate with each other in Java?
Add your answer
Q3. Write a program to reverse a linked list.
Add your answer
Q4. What is the difference between string literals and the string pool?
Add your answer
Q5. What is the program to print the 90-degree rotated view of a 2D array?
Add your answer

Q1. Given an array of non-negative integers.Find the length of the longest subsequence such that elements in the subsequence are contiguous integers. The consecutive numbers can be in any order. Example n=7 nu...read more
Ans. 
Find the length of the longest subsequence of contiguous integers in an array.
• Sort the array

• Iterate through the array and check for consecutive integers

• Keep track of the longest subsequence found
Answered by AI
Add your answer
Q2. Get list of pincodes from these objects Employee{ id Long, name String, Addresses : List
} Addresses{ houseNo long, pindcode long, state String, country String, } Ans. Use flatMap to flatten and then use m...read more
Ans. 
Use flatMap and map to extract list of pincodes from Employee objects
• Use flatMap to flatten the list of Addresses in each Employee object

• Use map to iterate over the flattened list and extract the pincodes

• Example: employeeList.stream().flatMap(emp -> emp.getAddresses().stream()).map(address -> address.getPincode()).collect(Collectors.toList())
Answered by AI
Add your answer
Q3. What is Database Pooling, Hikari and its configurations. Java 8 to current enchancements and current java version Factory and Builder design patterns to explain and code Project expalantion and details, Cr...read more
Ans. 
Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
• HikariCP is a high-performance database connection pooling library for Java applications.

• It is known for its low latency and high throughput.

• Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...read more
Answered by AI
Add your answer

Q1. What is LMS ?
Ans. 
LMS stands for Learning Management System, a software application for the administration, documentation, tracking, reporting, and delivery of educational courses or training programs.
• LMS helps organizations deliver online courses and training programs to employees or students.

• It allows for the creation and management of courses, assessments, and learning materials.

• LMS can track learner progress, generate reports, and p...read more
Answered by AI
Add your answer
Q2. What is shadow DOM
Ans. 
Shadow DOM is a way to encapsulate the styling and structure of a web component, preventing styles from leaking out or clashing with the rest of the page.
• Shadow DOM allows for creating self-contained components with their own styles and markup

• It helps in preventing styles from the main document affecting the component and vice versa

• Shadow DOM can be created using the 'shadowRoot' property of an element
Answered by AI
Add your answer

Q1. What all exceptions you know ?
Ans. 
Some common exceptions in Salesforce development include DMLException, QueryException, and LimitException.
• DMLException: Thrown when an error occurs while performing DML operations like insert, update, delete.

• QueryException: Thrown when an error occurs while querying data from the database.

• LimitException: Thrown when governor limits are exceeded, such as SOQL query limit or CPU time limit.
Answered by AI
Add your answer
Q2. Have you worked on integration ?
Ans. 
Yes, I have worked on integration in Salesforce development.
• I have experience integrating Salesforce with external systems using REST and SOAP APIs.

• I have worked on integrating Salesforce with third-party applications like MailChimp and DocuSign.

• I have implemented custom integrations using tools like Salesforce Connect and MuleSoft.

• I have experience with data mapping, transformation, and synchronization during integrat
Answered by AI
Add your answer

Q1. Why governor limits ?
Ans. 
Governor limits are in place to ensure efficient use of resources and prevent abuse in Salesforce platform.
• Governor limits help in maintaining system performance and preventing monopolization of resources.

• They ensure fair usage of resources among all users on the platform.

• Examples include limits on number of records retrieved in a single query, number of SOQL queries executed, and CPU time consumed.

• Governor limits also...read more
Answered by AI
Add your answer
Q2. What is challenge you faced ?
Ans. 
One challenge I faced was integrating a third-party API with Salesforce.
• Had to understand the API documentation thoroughly

• Encountered compatibility issues with Salesforce platform

• Implemented custom code to bridge the gap between API and Salesforce
Answered by AI
Add your answer

Q1. Context api, js related qstns, simple programming qstn,
Add your answer
Q2. Remove duplicates without using set.
Ans. 
Remove duplicates from array of strings without using set.
• Iterate through the array and compare each element with all other elements to find duplicates.

• Create a new array and add elements only if they are not already present in the new array.
Answered by AI
Add your answer

Coding round is related to DSA

Q1. Java related questions
Add your answer
Q2. Explain about your project
Add your answer

Q1. Salary negotiation
Add your answer
Q2. Why you want to join us?
Add your answer

Technology advantage or not

All aptitude topics,logical reasoning

Q1. Oops,2 coding questions
Add your answer
Q2. Palindrome,even number
Add your answer

Q1. What do you know
Add your answer
Q2. Do you have any questions
Add your answer

Q1. REST API for User CRUD
Ans. 
Design a RESTful API for CRUD operations on user resources.
• Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations

• Create endpoints like /users for listing all users, /users/{id} for specific user

• Use status codes like 200 for success, 404 for not found, 400 for bad request

• Implement authentication and authorization mechanisms for security

• Include request and response body formats like JSON or XML
Answered by AI
Add your answer
Q2. Two Sum Leetcode problem
Add your answer
Q3. Basic questions based on the candidate technical skills
Add your answer

Q1. Basics to Intermediate level of questions based on the skills mentioned in the resume
Add your answer
Q2. Projects related discussions
Add your answer

Q1. I was informed to upload the supporting documents. ( They rejected me after this eventhough all my documents are genuine )
Add your answer

Simple logical based

Palindrome
Reverse a string

Q1. Oops pillar define and explain
Ans. 
The four pillars of Object-Oriented Programming (OOP) are Abstraction, Encapsulation, Inheritance, and Polymorphism.
• Abstraction: Hides complex implementation details and only shows the necessary features to the outside world.

• Encapsulation: Bundles data and methods that operate on the data into a single unit, preventing direct access to data from outside the class.

• Inheritance: Allows a new class to inherit properties an...read more
Answered by AI
Add your answer