EPAM Systems Senior Software Development Engineer Interview Questions and Answers

Q1. What is Dependency Injection?
Ans. 
Dependency Injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Allows for easier testing by providing mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: Constructor injection, Setter injection, Interface injection
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Q2. How to handle exception in java
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In Java, exceptions can be handled using try-catch blocks to catch and handle specific exceptions.
• Use try-catch blocks to catch exceptions and handle them gracefully

• Use multiple catch blocks to handle different types of exceptions

• Use finally block to execute code regardless of whether an exception is thrown or not

• Throw custom exceptions using throw keyword
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Q1. In Java8, different between flatmap and map
Ans. 
map transforms each element in a stream, while flatMap transforms each element into multiple elements
• map applies a function to each element in a stream and returns a new stream of the results

• flatMap applies a function that returns a stream for each element in the original stream, then flattens the streams into a single stream

• Example: map - stream.map(x -> x * x), flatMap - stream.flatMap(str -> Arrays.stream(str.split(
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Q2. How to handle the ConcureentModificationException
Ans. 
ConcurrentModificationException occurs when a collection is modified while iterating over it.
• Use Iterator to iterate over the collection instead of foreach loop.

• If modification is necessary, use Iterator's remove() method instead of collection's remove() method.

• Consider using synchronized collections or ConcurrentHashMap to avoid ConcurrentModificationException.
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Q1. What is react life cycle?
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Q1. Write boarding, code refactoring
Ans. 
Boarding pass code refactoring involves optimizing and improving the code for generating boarding passes.
• Identify redundant or inefficient code and streamline the process

• Use object-oriented programming principles to improve code structure

• Implement design patterns like Factory Method for generating different types of boarding passes

• Optimize algorithms for generating and displaying boarding pass information
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2 coding questions and should complete one after another

60 min test with multiple choice questions

Q1. Live coding or some questions
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Q1. Basic java and one coding question
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Q1. In depth questions on oops and spring boot hibernate and java 8 features
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Q1. Java, spring framework, hibernate questions
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Q1. Java, spring boot, design
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Q1. Why are you switching comany ? and Salary Expectations
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Sitting arrangement questions

Blood group relationship

Cloud computing Testing

HTML css java script

What is DATA base management system

Q1. Tell me about your self
Ans. My name is sumalata vastrad iam from Gadag I did my graduation in BCA from Karnataka University dharwad currently iam researching jobs i did my schooling from Howrah
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Q2. Family background detailed
Ans. I belong to a nuclear family we are four members in my family father, mother younger brother and me
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Q3. Company background detailed
Ans. Enable business outcome for client through global managaed service for networking data centre cloud in structure founded in 1988
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Q4. What is DATA structure
Ans. 
A data structure is a way of organizing and storing data in a computer so that it can be accessed and manipulated efficiently.
• Data structures provide a means to manage and organize data in a logical and efficient manner.

• They define the relationship between the data, allowing for easy retrieval and modification.

• Examples of data structures include arrays, linked lists, stacks, queues, trees, and graphs.
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Q5. Definition of java and benifit of java
Ans. 
Java is a popular programming language known for its platform independence and extensive libraries.
• Java is an object-oriented language that allows developers to write code once and run it on any platform.

• It provides a robust and secure environment for developing and executing applications.

• Java has a vast collection of libraries and frameworks that simplify development and enhance productivity.

• It supports multithreading...read more
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Q6. Characters of java script
Ans. 
JavaScript characters include letters, numbers, symbols, and special characters.
• JavaScript characters can be used to create strings, numbers, and perform operations.

• Examples of JavaScript characters include 'a', '1', '$', and '&'.
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Q7. What is software engineer (se)
Ans. 
A software engineer is a professional who designs, develops, and maintains software applications.
• Software engineers use programming languages and tools to create software solutions.

• They analyze user requirements and design software architecture.

• Software engineers write code, test and debug software, and ensure its functionality.

• They collaborate with other team members and follow software development best practices.

• Exam...read more
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Q8. What are the model of software engineerwat
Ans. 
The models of software engineering refer to different approaches or methodologies used in software development.
• Waterfall model

• Agile model

• Iterative model

• Spiral model

• V-model
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Q9. Explain resk management system
Ans. 
A risk management system is a software tool or platform that helps organizations identify, assess, and mitigate risks.
• A risk management system helps organizations identify potential risks and their impact on business operations.

• It assesses the likelihood of risks occurring and the severity of their impact.

• The system provides tools for documenting and tracking risks, assigning responsibilities, and implementing mitigati...read more
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Q10. What is operating system
Ans. 
An operating system is a software that manages computer hardware and software resources and provides common services for computer programs.
• Manages computer hardware and software resources

• Provides common services for computer programs

• Controls and coordinates computer operations

• Acts as an intermediary between users and computer hardware

• Examples: Windows, macOS, Linux, Android, iOS
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Q11. DefiNe software testing
Ans. 
Software testing is the process of evaluating a software system to identify defects or errors.
• Software testing is essential to ensure the quality and reliability of software.

• It involves executing the software with the intention of finding bugs or issues.

• Testing can be done manually or using automated tools.

• Different types of testing include unit testing, integration testing, system testing, and acceptance testing.

• Examp...read more
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Q1. Tell me about your self
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Q2. Family background detailed
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Q3. Company background detailed
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Q1. What is your name please tell Detailed NTT
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Q2. NTT DATA company background detailed
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Q3. Tell me your self introduction
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Cloud computing Testing

Blood group relationship

Sitting arrangement questions

Alphabet letter coding

Q1. Tell me about your self
Ans. My name is sumalata vastrad iam from Gadag I did my graduation in BCA from Karnataka University dharwad currently iam researching jobs i did my schooling from Howrah
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Q2. Family background detailed
Ans. I belong to a nuclear family we are four members in my family father, mother younger brother and me
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Q3. Company background detailed
Ans. Founded in 1988 enable business out come for client
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Blood group relationship between parents and children

Blood group relationship between parents and children

Q1. Introduction about your work and Tech work
Ans. 
I have been working as a Software Engineer for the past 5 years, specializing in developing web applications using Java and JavaScript.
• Proficient in Java and JavaScript

• Experience in developing web applications

• Strong understanding of software development principles

• Familiarity with agile methodologies

• Knowledge of database management systems

• Experience with version control systems like Git

• Ability to work in a team and comm
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Q2. All Details of OOPs concepts
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Q3. Write a code by using OOPs technology result doesn't matter approach will be considered
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Coding Round two questions with OOPs concepts