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Intellect Design Arena Interview Questions and Answers
111 Interview questions
Spring Boot simplifies backend development with features like auto-configuration, embedded servers, and RESTful APIs.
Auto-configuration: Automatically configures Spring applications based on dependencies. For example, if 'spring-boot-starter-web' is included, it sets up Tomcat and Spring MVC.
Embedded Server: Spring Boot allows running applications with an embedded server like Tomcat or Jetty, eliminating the need ...
Implemented multithreading to enhance performance and responsiveness in our backend services, optimizing resource utilization.
Used Java's ExecutorService for managing thread pools, allowing efficient task execution.
Implemented asynchronous processing for handling I/O operations, reducing response time.
Utilized Python's threading module to run background tasks without blocking the main application.
Applied multithre...
Java 11 and 17 introduce enhancements in Spring MVC REST API annotations, improving performance and features.
Java 11 introduced the 'var' keyword for local variable type inference, simplifying code.
Java 17 includes sealed classes, allowing more control over class hierarchies.
Spring MVC in Java 11 uses @RestController for REST APIs, while Java 17 maintains this but enhances performance.
Java 17 supports pattern matc...
SQL joins combine rows from two or more tables based on related columns, enabling complex queries and data retrieval.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;
LEFT JOIN (or LEFT OUTER JOIN): Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;
RIGHT JOIN (or R...
Connecting Java with SQL involves using JDBC to execute SQL queries and manage database connections.
1. Load the JDBC driver: Class.forName('com.mysql.cj.jdbc.Driver');
2. Establish a connection: Connection conn = DriverManager.getConnection(url, user, password);
3. Create a statement: Statement stmt = conn.createStatement();
4. Execute a query: ResultSet rs = stmt.executeQuery('SELECT * FROM table_name');
5. Process t...
Extracting characters from a string and removing duplicates can be achieved using various programming techniques.
1. Initialize an empty set to track unique characters.
2. Iterate through each character in the string.
3. For each character, check if it is in the set.
4. If not, add it to the set and also to a result list.
5. Finally, convert the result list back to a string or return it as needed.
Example: For input 'he...
Balancing efficiency involves optimizing resources while maintaining quality and effectiveness in operations.
Identify key performance indicators (KPIs) to measure efficiency, such as time, cost, and quality.
Implement lean management techniques to reduce waste and streamline processes, e.g., using Kanban systems.
Utilize technology and automation to enhance productivity, like using software for project management.
En...
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
Dependency injection helps in achieving loose coupling between classes.
It allows for easier testing by providing a way to mock dependencies.
There are three types of dependency injection: constructor injection, setter injection, and interface injection.
I currently live in a bustling city with easy access to public transportation and amenities.
I live in a city with a population of over 1 million people
I have access to public transportation such as buses and trains
There are plenty of amenities nearby such as grocery stores, restaurants, and parks
A User Story is a brief, simple description of a feature from the perspective of the end user.
User Stories are typically written in the format: 'As a [type of user], I want [some goal] so that [some reason].'
Example: 'As a customer, I want to be able to track my order status so that I can know when to expect delivery.'
They help prioritize features based on user needs and business value.
User Stories are often used ...
Intellect Design Arena Interview Experiences
171 interviews found
Animesh Raj
Selected
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
(3 Questions)
- Q1. What is difference between == and .equals in java
- Ans.
In Java, == is used for comparing reference equality, while .equals() is used for comparing object equality.
== compares memory addresses of two objects
.equals() compares the actual contents of the objects
For primitive data types, == compares values, while for objects, it compares references
Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will be false, but str1.equals(str2) wi...
- Q2. What is difference between hash map and hash table
- Ans.
HashMap is non-synchronized and not thread-safe, while HashTable is synchronized and thread-safe.
HashMap allows null values and one null key, while HashTable does not allow null keys or values.
HashMap is faster than HashTable as it is non-synchronized, but HashTable is safer for use in multi-threaded environments.
HashMap is part of the Java Collections Framework, while HashTable is a legacy class.
- Q3. HashMap is not synchronized so its allow the null values and one null key on other hand hash table not null values
- Ans.
HashMap allows null values and one null key, while HashTable does not allow null values.
HashMap allows null values and one null key, while HashTable does not allow null values.
HashMap is not synchronized, while HashTable is synchronized.
HashMap is faster than HashTable.
Example: HashMap<String, String> map = new HashMap<>(); map.put(null, "value");
Example: HashTable<String, String> table = new HashTabl...
Skills evaluated in this interview
Aniket Sarowar
Selected
I applied via Naukri.com and was interviewed in Nov 2024. There were 4 interview rounds.
(1 Question)
- Q1. Core java based questions, followed by springboot and then sql queries
(1 Question)
- Q1. Scenario based java and spring boot questions and more complex sql queries
(1 Question)
- Q1. Previous project related questions like difficulty faced in project, how you overcome that, day to day routine, discussed role in projects
(1 Question)
- Q1. Salary discussion and onboarding instructions
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Dec 2024. There were 4 interview rounds.
Game based Aptitude test
Multiple choice questions on OPPS and pseudo codes with 2 questions on java and 2 on sql
(3 Questions)
- Q1. Java collections
- Q2. Exception Handling
- Q3. Some tricky programs output
(2 Questions)
- Q1. Personal Inquiry
- Q2. Location confirmation
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Nov 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Angular structure
- Q2. Dependency injection
(2 Questions)
- Q1. Manageral questions
- Q2. Scenario based questions
(1 Question)
- Q1. Package discussion
I applied via Campus Placement and was interviewed in Nov 2024. There were 4 interview rounds.
(2 Questions)
- Q1. We have to find patterns in games
- Q2. We have to remember patterns in games
2 questions of java and oops mainly
(2 Questions)
- Q1. Questions about java
- Q2. Questions about Networking
(2 Questions)
- Q1. Asking about Managing director name?
- Q2. About the platforms and products of company
Interview Preparation Tips
- Java
Selected
I applied via LinkedIn and was interviewed in Sep 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Spring boot end to end , Websevices, Microservices.
- Q2. Java 8 Features and some SQL queries.
(2 Questions)
- Q1. Previous Project Architecture and what you contribute in that project.
- Ans.
Designed a scalable microservices architecture for a web application, focusing on performance and reliability.
Led the design and implementation of the service-oriented architecture
Utilized Docker containers for easy deployment and scalability
Implemented load balancing and caching strategies for improved performance
Contributed to the development of RESTful APIs for seamless communication between services
- Q2. Kafka related questions and SQL based query.Program that you need to write using Java 8 Features.
Interview Preparation Tips
Working at client side experience and troubleshooting
(5 Questions)
- Q1. Payments types in Banking
- Ans.
Various payment types used in banking include cash, checks, wire transfers, credit/debit cards, and online/mobile payments.
Cash: Physical currency used for transactions.
Checks: Written orders to pay a specific amount from one account to another.
Wire Transfers: Electronic transfer of funds between banks.
Credit/Debit Cards: Plastic cards used to make payments.
Online/Mobile Payments: Transactions made through internet or ...
- Q2. Customer onboarding process
- Q3. SQLdatabase testing
- Q4. Java and Selenium automation tools specific
- Q5. Document analyticsand scripts ,Test case preparation
Interview Preparation Tips
I applied via Recruitment Consulltant and was interviewed in Sep 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Difference between hashset and hashtable
- Q2. Collection vs Collections
(2 Questions)
- Q1. SQL query related questions
- Q2. Write a Java program to find the duplicate in Array
Skills evaluated in this interview
revati Surve
(2 Questions)
- Q1. Questions on stream api
- Q2. Collection related questions
(2 Questions)
- Q1. Collection related questions
- Q2. Mysql questions
(2 Questions)
- Q1. Family background
- Q2. Salary negotiations
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. What is the process for connecting Java with SQL?
- Ans.
Connecting Java with SQL involves using JDBC to execute SQL queries and manage database connections.
1. Load the JDBC driver: Class.forName('com.mysql.cj.jdbc.Driver');
2. Establish a connection: Connection conn = DriverManager.getConnection(url, user, password);
3. Create a statement: Statement stmt = conn.createStatement();
4. Execute a query: ResultSet rs = stmt.executeQuery('SELECT * FROM table_name');
5. Process the re...
- Q2. What is the process to extract each character from a string and remove duplicate characters?
- Ans.
Extracting characters from a string and removing duplicates can be achieved using various programming techniques.
1. Initialize an empty set to track unique characters.
2. Iterate through each character in the string.
3. For each character, check if it is in the set.
4. If not, add it to the set and also to a result list.
5. Finally, convert the result list back to a string or return it as needed.
Example: For input 'hello',...
- Q3. What are the different types of joins in SQL?
- Ans.
SQL joins combine rows from two or more tables based on related columns, enabling complex queries and data retrieval.
INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;
LEFT JOIN (or LEFT OUTER JOIN): Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;
RIGHT JOIN (or RIGHT ...
- Q4. What questions related to projects listed on your resume have you encountered, particularly focusing on the skills you have included?
Interview Preparation Tips
Skills evaluated in this interview
Chandra Harsha Ganivada
(2 Questions)
- Q1. Basic Questions, Data types, Promises
- Q2. Event loop, and other js concepts
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