EPAM Systems Interview Questions, Process, and Tips

Q1. Private method,Static Method, can be overloaded, JAVA8 questions
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Q2. Lambda expression , Collection, Map, List questions
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Q3. OOPS, Interface, Why to use interface, how to implement run time polymorphism, real time example of interface
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Interface in OOPS is used to achieve abstraction and multiple inheritance. It allows for run time polymorphism by implementing methods in different classes.
• Interface in OOPS is a blueprint of a class that includes abstract methods without any implementation.

• Interfaces are used to achieve abstraction, multiple inheritance, and loose coupling in code.

• To implement run time polymorphism using interfaces, create multiple cl...read more
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Q4. Write Update and delete query
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Update and delete queries in SQL
• For updating a record in a table: UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;

• For deleting a record from a table: DELETE FROM table_name WHERE condition;
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Q5. How do you motivate team
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Q6. Saucelab or browserstack which one you use, what the purpose of use
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I use both Saucelab and Browserstack for different purposes. Saucelab for automated testing and Browserstack for manual testing.
• I use Saucelab for automated testing as it provides a cloud-based platform for running tests on multiple browsers and devices.

• I use Browserstack for manual testing as it allows me to interact with the application in real-time on various browsers and devices.

• Saucelab is great for continuous int...read more
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OA was easy. But in order to crack this company you have to know Java (must); even for freshers.

Q1. Architecture based use case
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Architecture based use case involves designing a system to meet specific requirements.
• Identify the requirements and constraints of the use case

• Design a solution architecture that meets the requirements

• Consider scalability, security, and performance in the architecture

• Implement the architecture using cloud services and technologies

• Monitor and optimize the architecture for efficiency
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Q2. Draw achtecural diagram and had discussed based on the arch decision
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Q3. Scenario based tech qtn
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Q4. Discussed the solution
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Q1. One easy Array based DSA, Core java, java streams
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