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Direction Software LLP Interview Questions and Answers
41 Interview questions
CI/CD pipeline automates the process of integrating code changes and deploying them to production.
Automates the process of integrating code changes
Automates the process of testing code changes
Automates the process of deploying code changes
Helps in detecting and fixing bugs early in the development cycle
Increases the speed of software delivery
Ensures consistency in the deployment process
Custom queries in Spring Data JPA can be created using JPQL, native queries, or method naming conventions.
Use @Query annotation for JPQL or native SQL queries. Example: @Query("SELECT u FROM User u WHERE u.name = ?1")
Define custom repository methods by extending JpaRepository and using method naming conventions. Example: findByLastName(String lastName).
Utilize QueryDSL for type-safe queries by integrating it with ...
The Executor framework in Java provides methods for managing and controlling thread execution.
execute(Runnable command): Executes the given command at some time in the future. Example: executor.execute(() -> System.out.println('Task executed'));
submit(Callable<T> task): Submits a value-returning task for execution and returns a Future. Example: Future<Integer> future = executor.submit(() -> 123);
...
Multi-threading is a programming concept where multiple threads run concurrently within a single process.
Multi-threading allows for parallel execution of tasks, improving performance and responsiveness.
Used in applications that require handling multiple tasks simultaneously, such as web servers or video editing software.
Example: Implementing a multi-threaded server to handle multiple client requests concurrently.
Java is known for its compatibility features, enabling cross-platform functionality and seamless integration across various systems.
Platform Independence: Java's 'Write Once, Run Anywhere' (WORA) capability allows code to run on any device with a Java Virtual Machine (JVM).
Backward Compatibility: Newer Java versions maintain compatibility with older versions, ensuring legacy applications continue to function.
Inter...
A key with a null value in HashMap will be stored in the HashMap as a key-value pair with a null value.
In a HashMap, keys can have null values but only one key with a null value is allowed.
If you try to store a key with a null value multiple times, the previous value associated with that key will be overwritten.
Example: HashMap<String, Integer> map = new HashMap<>(); map.put(null, 5); // key=null, valu...
A REST API is an architectural style for designing networked applications using HTTP requests to access and manipulate data.
REST stands for Representational State Transfer.
It uses standard HTTP methods: GET (retrieve), POST (create), PUT (update), DELETE (remove).
Resources are identified by URIs (Uniform Resource Identifiers).
Responses are typically in JSON or XML format.
Example: A GET request to '/users' retrieve...
Both @Controller and @RestController are used in Spring MVC, but they serve different purposes in handling web requests.
@Controller is used to define a controller that handles web requests and returns views (HTML pages).
@RestController is a specialized version of @Controller that returns JSON or XML responses directly.
With @Controller, you typically use @ResponseBody to return data, while @RestController automatic...
JDK is a development kit for Java, while JRE is a runtime environment for executing Java applications.
JDK stands for Java Development Kit, which includes tools for developing Java applications.
JRE stands for Java Runtime Environment, which provides the libraries and JVM to run Java applications.
JDK includes JRE, so when you install JDK, you also get JRE.
Example: To compile Java code, you need JDK; to run Java appl...
An ID in Hibernate is a unique identifier for an entity in a database. It is used to uniquely identify each record.
ID is a field in an entity class annotated with @Id in Hibernate.
It can be of different types like int, long, String, etc.
ID is used to uniquely identify each record in a database table.
It is often generated automatically using strategies like @GeneratedValue.
Example: @Id @GeneratedValue(strategy = Ge...
Direction Software LLP Interview Experiences
5 interviews found
I applied via Referral and was interviewed in Sep 2024. There were 3 interview rounds.
(17 Questions)
- Q1. What was your role and responsibilities in your previous company?
- Q2. Key features of Java 8.
- Ans.
Key features of Java 8 include lambda expressions, functional interfaces, streams, and default methods.
Lambda expressions allow for functional programming style in Java.
Functional interfaces enable the use of lambda expressions.
Streams provide a way to work with collections in a more functional way.
Default methods allow interfaces to have method implementations.
- Q3. What is multi-threading and how have you used it in your application?
- Q4. What are the compatible features of Java?
- Q5. Can you explain what ConcurrentModificationException is and how to resolve it?
- Q6. What is Spring Boot?
- Q7. What are microservices?
- Q8. Do microservices contain transactional data?
- Ans.
Yes, microservices can contain transactional data.
Microservices can handle transactional data by using distributed transactions or event sourcing.
Each microservice can manage its own database, which can include transactional data.
Microservices can communicate with each other to ensure consistency in transactional data.
Examples: E-commerce platform with separate microservices for inventory, orders, payments, etc.
- Q9. How can microservices be updated with new data?
- Ans.
Microservices can be updated with new data by using versioning, rolling updates, blue-green deployments, and canary releases.
Use versioning to manage different versions of microservices.
Implement rolling updates to gradually update instances without downtime.
Utilize blue-green deployments to switch between old and new versions seamlessly.
Employ canary releases to test new data on a small subset of users before full dep...
- Q10. What technologies can be used to update microservices with data?
- Ans.
Technologies like Kafka, RabbitMQ, and Apache Pulsar can be used to update microservices with data.
Kafka
RabbitMQ
Apache Pulsar
- Q11. How do you configure login in Spring Boot?
- Ans.
To configure login in Spring Boot, you can use Spring Security to handle authentication and authorization.
Add Spring Security dependency in your pom.xml file
Create a class that extends WebSecurityConfigurerAdapter to configure security settings
Override configure(HttpSecurity http) method to define login form, login processing URL, success and failure URLs
Use @EnableWebSecurity annotation on your main application class ...
- Q12. How do you handle multiple data sources in Spring Boot?
- Q13. Do you filter out duplicate employee records from a list?
- Ans.
Yes, I typically use a hash set or dictionary to filter out duplicate employee records from a list.
Iterate through the list of employee records
Use a hash set or dictionary to keep track of unique employee IDs
Check each employee record against the hash set or dictionary to filter out duplicates
- Q14. How do you identify an object in a collection?
- Ans.
To identify an object in a collection, you can iterate through the collection and compare each object with the target object.
Iterate through the collection using a loop
Compare each object in the collection with the target object using a conditional statement
Use a unique identifier or property of the object to match it with the target object
Example: Identifying a specific student in a list of students by comparing their...
- Q15. What is a REST API?
- Q16. How do you implement an authentication service in an application?
- Ans.
Implementing an authentication service involves creating a secure system for verifying user identities.
Use encryption to securely store user passwords
Implement multi-factor authentication for added security
Utilize tokens or cookies for session management
Integrate with OAuth or OpenID Connect for third-party authentication
Implement rate limiting and account lockout mechanisms to prevent brute force attacks
- Q17. How does REST service return data and in which format?
- Ans.
REST services return data in JSON or XML format.
Data is typically returned in JSON or XML format.
JSON is more commonly used due to its simplicity and readability.
REST services can also return data in other formats like HTML or plain text.
Example: {"name": "John Doe", "age": 30}
(9 Questions)
- Q1. What is the role of the Spring Boot actuator?
- Ans.
Spring Boot actuator provides production-ready features to help monitor and manage your application.
Provides endpoints to monitor application health, metrics, info, etc.
Can be used to check the status of the application, database connections, and more.
Allows customization and security configurations for the endpoints.
- Q2. How can you secure a spring boot application, especially in the context of a banking application? what are the basics of spring security?
- Ans.
Securing a Spring Boot application, especially in the context of a banking application, involves implementing Spring Security.
Use Spring Security to handle authentication and authorization
Implement secure communication using HTTPS
Utilize role-based access control to restrict user permissions
Enable CSRF protection to prevent cross-site request forgery attacks
Implement secure password storage and session management
- Q3. How can you integrate Spring Data JPA with Spring Boot?
- Ans.
Integrating Spring Data JPA with Spring Boot allows for easy database operations in a Spring Boot application.
Add Spring Data JPA dependency in pom.xml
Create JPA entity classes annotated with @Entity
Create a repository interface extending JpaRepository
Use repository interface in service classes for database operations
Configure application.properties with database connection details
- Q4. Can you explain the concept of Optional in Java?
- Q5. Do you have any experience with job scheduling?
- Ans.
Yes, I have experience with job scheduling in previous projects.
Utilized cron jobs to automate tasks at specific times
Worked with tools like Apache Airflow for complex job scheduling workflows
Implemented job scheduling in Python scripts using libraries like schedule or APScheduler
- Q6. How does microservice architecture differ from monolithic architecture?
- Q7. What is the use of the CI/CD pipeline in software development?
- Q8. What technologies you were using to create the UI side of your springboard application?
- Ans.
I used AngularJS and Bootstrap to create the UI side of the springboard application.
AngularJS
Bootstrap
- Q9. What do you know about Vaadin?
- Ans.
Vaadin is an open-source web application framework for building modern web apps using Java.
Vaadin allows developers to build web applications using Java on the server-side and HTML/CSS/JavaScript on the client-side.
It provides a set of customizable UI components and a Java API for creating interactive web interfaces.
Vaadin simplifies the development process by handling client-server communication and UI updates automat...
(24 Questions)
- Q1. What is the difference between JDK and JRE?
- Q2. Can we run a program without JRE?
- Q3. What is the internal working of HashMap in java?
- Q4. What happens if I have a key with a null value in HashMap and where it will get stored?
- Q5. Difference between fail-fast and fail-safe? which one is synchronized?
- Ans.
Fail-fast stops immediately upon detecting an error, while fail-safe continues to operate despite errors. Fail-safe is synchronized.
Fail-fast immediately stops the operation upon encountering an error, ensuring that no further damage is done.
Fail-safe continues to operate despite errors, often by handling the error and allowing the program to continue running.
Fail-safe is synchronized, meaning that it is designed to ha...
- Q6. HashMap vs LinkedHashMap?
- Q7. Load factor in HashMap?
- Ans.
Load factor in HashMap determines when the HashMap should be resized to maintain performance.
Load factor is a measure of how full the HashMap is allowed to get before its capacity is automatically increased.
The default load factor of HashMap is 0.75, which means the HashMap will be resized when it is 75% full.
Increasing the load factor reduces the space overhead but increases the time cost of resolving collisions.
Examp...
- Q8. What is a Daemon thread?
- Q9. Concept of multithreading in Java and how does it work?
- Ans.
Multithreading in Java allows multiple threads to execute concurrently, improving performance and responsiveness.
Multithreading allows multiple threads to run concurrently within a single process.
Each thread has its own stack and program counter, but share the same heap memory.
Java provides built-in support for multithreading through the java.lang.Thread class.
Example: Creating a new thread by extending the Thread clas...
- Q10. What is the Executor framework in Java?
- Q11. Name some methods in Executor framework?
- Q12. What is the join method in Java?
- Q13. Explain one-to-many and many-to-one relationships in Hibernate.
- Ans.
One-to-many and many-to-one relationships in Hibernate are used to define the relationship between entities in a database.
One-to-many relationship: One entity can be associated with multiple instances of another entity. For example, one department can have multiple employees.
Many-to-one relationship: Multiple instances of one entity can be associated with a single instance of another entity. For example, multiple emplo...
- Q14. What is an ID in Hibernate and how it is used?
- Ans.
An ID in Hibernate is a unique identifier for an entity in a database. It is used to uniquely identify each record.
ID is a field in an entity class annotated with @Id in Hibernate.
It can be of different types like int, long, String, etc.
ID is used to uniquely identify each record in a database table.
It is often generated automatically using strategies like @GeneratedValue.
Example: @Id @GeneratedValue(strategy = Generat...
- Q15. How do you create custom queries in Spring Data JPA?
- Q16. Name different annotations used in Spring Boot.
- Q17. How to create a repository interface in Spring Data JPA?
- Q18. How to define custom queries in the repository interface?
- Q19. What is the difference between @Controller and @RestController?
- Q20. What is DispatcherServlet in Spring Boot?
- Ans.
DispatcherServlet is the front controller in Spring Boot that receives incoming requests and dispatches them to the appropriate handler.
DispatcherServlet is a servlet that manages the flow of incoming requests in a Spring Boot application.
It acts as the front controller, receiving all requests and then dispatching them to the appropriate handler for processing.
DispatcherServlet is configured in the web.xml file or thro...
- Q21. What are microservices?
- Q22. How does communication happen between microservices?
- Ans.
Communication between microservices can happen through synchronous or asynchronous protocols like HTTP, messaging queues, or gRPC.
Microservices can communicate through synchronous protocols like HTTP, where one service sends a request to another service and waits for a response.
Alternatively, microservices can communicate asynchronously using messaging queues like RabbitMQ or Kafka, where messages are sent between serv...
- Q23. Internal working of messaging between microservices.
- Ans.
Messaging between microservices involves communication through message brokers or direct API calls.
Microservices communicate through message brokers like RabbitMQ or Kafka.
Messages are sent in a format like JSON or XML.
Microservices can also communicate through direct API calls using REST or gRPC.
Message queues help in decoupling services and ensuring reliable communication.
Service discovery mechanisms like Consul or E...
- Q24. Coding problem - Find the maximum and minimum sum after removing one element from an array. (what is the time complexity of the program?)
- Ans.
Find max and min sum after removing one element from array. Time complexity analysis required.
Iterate through array to find sum of all elements
For each element, calculate sum after removing it
Track max and min sum as you iterate
Time complexity: O(n) where n is the number of elements in the array
Interview Preparation Tips
Core Java, Java Generics, Spring Boot, Web Services, ORM, JMS, and Microservice Architecture.
Good to know about CI/CD and Vaadin.
Skills evaluated in this interview
(2 Questions)
- Q1. Tell me about yourself
- Ans.
Experienced Functional Consultant with a background in analyzing business processes and implementing solutions to improve efficiency.
Over 5 years of experience in functional consulting
Skilled in analyzing business requirements and translating them into functional specifications
Proficient in implementing and customizing ERP systems such as SAP and Oracle
Strong communication and problem-solving skills
Certified in relevan...
- Q2. Your experience
- Ans.
I have over 5 years of experience as a Functional Consultant in various industries.
Implemented ERP systems for multiple clients to streamline business processes
Analyzed client requirements and customized software solutions to meet their needs
Provided training and support to end users to ensure successful implementation
Collaborated with cross-functional teams to optimize system performance
Interview Preparation Tips
Saurabh Panchal
I applied via Walk-in and was interviewed in Apr 2023. There were 4 interview rounds.
Easy simple questions to solve
Some questions based on the concepts of technical
Some coding questions of string arrays
Interview Preparation Tips
Selected
I applied via Referral and was interviewed before Aug 2023. There were 2 interview rounds.
Normal basics program
(3 Questions)
- Q1. Core java concepts
- Q2. Multi threading
- Q3. Collection framework
Interview Preparation Tips
Interview Questionnaire
3 Questions
- Q1. Plsql and Unix schell scripting is required , like how to transfer data from one server to another server using putty
- Ans.
Transfer data between servers using PL/SQL and Unix shell scripting via PuTTY for secure file transfer.
Use SCP (Secure Copy Protocol) for transferring files: `scp localfile user@remote:/path/to/destination`.
Use SFTP (Secure File Transfer Protocol) for interactive file transfer: `sftp user@remote` then use `put localfile`.
Automate the process with shell scripts: Create a script to run SCP commands for scheduled transfer...
- Q2. Packages , procedures , functions are must .
- Q3. Different SQL queries will be asked to be created.
Top trending discussions
Interview questions from similar companies
I applied via LinkedIn and was interviewed in Dec 2020. There were 3 interview rounds.
Interview Questionnaire
5 Questions
- Q1. JS Prototype usage and functionality.
- Ans.
JS Prototype is a mechanism for inheritance and sharing properties among objects.
Prototype is a property of every JavaScript function.
It allows objects to inherit properties and methods from other objects.
Modifying the prototype of a function affects all instances of that function.
Prototype chain is used to look up properties and methods of an object.
Prototype can be used to add new methods and properties to existing o...
- Q2. Node- without any loop need to check how can you find the total number
- Ans.
To find the total number without any loop in Node.js
Use the reduce() method to sum up the values in an array
Use the length property of an array to get the total number of elements
Use the Object.keys() method to get the total number of keys in an object
- Q3. Node - what is difference between promise and async await and callback.
- Ans.
Promises, async/await, and callbacks are all ways to handle asynchronous operations in Node.js.
Callbacks are functions passed as arguments to another function and called when the operation is complete.
Promises represent a value that may not be available yet, but will be resolved at some point in the future.
Async/await is a syntax for writing asynchronous code that looks like synchronous code.
Callbacks are the oldest an...
- Q4. Node - why do we use promise.
- Ans.
Promises are used in Node to handle asynchronous operations and avoid callback hell.
Promises simplify error handling and make code more readable.
Promises allow for chaining multiple asynchronous operations.
Promises can be used with async/await to write synchronous-looking code.
Example: fetching data from an API using axios library with promises.
Example: reading a file with promises in Node's fs module.
- Q5. Node - use of Sequelize (ORM)
- Ans.
Sequelize is an ORM for Node.js that supports multiple databases and provides easy data modeling and querying.
Sequelize is used to interact with databases in Node.js
It supports multiple databases like MySQL, PostgreSQL, SQLite, etc.
It provides easy data modeling and querying with its object-relational mapping
Example: const sequelize = new Sequelize('database', 'username', 'password', { dialect: 'mysql' });
Interview Preparation Tips
Skills evaluated in this interview
Manta
This round is based on aptitude
(1 Question)
- Q1. Resume based , java related
(1 Question)
- Q1. Tell me about yourself
It's depend on position after you crack the coding round you can eligible for two technical rounds
(1 Question)
- Q1. He asks about queries mainly stored procedures
(5 Questions)
- Q1. What are your salary expectations?
- Ans.
I expect a competitive salary based on my skills, experience, and industry standards.
Research industry standards: For example, Glassdoor or Payscale can provide insights into average salaries for similar roles.
Consider my experience: With 5 years in software development, I would expect a salary in the range of $80,000 to $100,000.
Location matters: Salaries can vary significantly based on the cost of living in different...
- Q2. What is your family background?
- Ans.
I come from a close-knit family that values education and support, fostering my passion for technology and problem-solving.
My parents are both educators, which instilled a love for learning in me from a young age.
I have a younger sister who is pursuing a career in engineering, inspiring me with her dedication.
Family gatherings often involve discussions about technology and innovation, sparking my interest in software d...
- Q3. Why should we hire you?
- Ans.
I bring a unique blend of technical skills, problem-solving abilities, and a passion for software development that aligns with your team's goals.
Proven experience in developing scalable applications, such as a recent project where I improved load times by 30%.
Strong proficiency in multiple programming languages, including Python and Java, allowing me to adapt to your tech stack quickly.
Excellent teamwork and communicat...
- Q4. Why are you looking for a change?
- Q5. Tell me about yourself.
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
Duration 1 hr general aptitude topics
Duration 1hr subject related coding questions
Interview Preparation Tips
Software Developer Interview Questions & Answers
CBTS TECHNOLOGY SOLUTIONS INDIA LLP
Anonymous
posted on 12 Apr 2024
I applied via Approached by Company and was interviewed in Mar 2024. There were 2 interview rounds.
Logic and MCQ were there
(2 Questions)
- Q1. How cobol db 2 works? how to add checkpoint logic.
- Ans.
COBOL DB2 is a programming language used for database management. Checkpoint logic is used to ensure data integrity and recoverability.
COBOL DB2 is used for accessing and manipulating data in DB2 databases.
Checkpoint logic in COBOL DB2 involves saving the current state of the database at specific points to ensure data integrity.
To add checkpoint logic, you can use COMMIT and ROLLBACK statements in your COBOL DB2 progra...
- Q2. How jcl works, how to do restart
- Ans.
JCL (Job Control Language) is used to control batch jobs on mainframe systems. Restarting a job involves identifying the step where it failed and resubmitting the job from that step.
JCL is used to define and control batch jobs on mainframe systems
To restart a job, identify the step where it failed
Modify the JCL to start from the failed step by specifying the restart parameter
Submit the modified JCL to restart the job
Interview Preparation Tips
Skills evaluated in this interview
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