Hitachi Digital Services Interview Questions, Process, and Tips

Q1. Questions on Java 8 and multithreading
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Q2. Defaalt methods
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Q3. Functional interfaces
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Q4. Streams and Lambdas
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Q1. Managerial interview. Scenario based questions around microservices and patterns.
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Based on sql queries my sql questions

Q1. Based on data governance
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Q2. Based in data quality rules
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Q1. Salary negotations
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Q2. Other questions
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Q1. Why apply to Hitachi Vantara?
Ans. 
Hitachi Vantara offers cutting-edge technology solutions and a collaborative work environment.
• Hitachi Vantara is a global leader in digital transformation and innovation.

• The company values teamwork and encourages professional growth and development.

• I am impressed by Hitachi Vantara's commitment to sustainability and social responsibility.
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Q2. Tell me about your yourself and experience?
Ans. 
I am a recent graduate with a degree in Computer Science and experience in developing web applications using Java and JavaScript.
• Recent graduate with a degree in Computer Science

• Experience in developing web applications using Java and JavaScript

• Familiar with software development best practices
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2nd round was given an assignment to complete within an hour receive by email and send to the email.
Use OOP principles to write code in C++. Read some structured text from file then print it in certain format they provided. Write thinking about more of quality rather than solving the problem.

Q1. Explain the assignment code submitted in 2nd round. Go through all the code and explain the code thoroughly.
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Q2. How differently would you write the assignment now?
Ans. 
I would approach the assignment with a better understanding of software design principles and best practices.
• I would focus on modularizing the code into smaller, reusable components

• I would pay more attention to error handling and edge cases

• I would write more comprehensive unit tests to ensure code quality

• I would consider scalability and performance optimizations in my design
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Q3. Answer questions from given sheet of C++ questions, about 5-8 questions related to OOP, then from the given coding find the error, tell what the code does. last coding questions were not junior level, if a...read more
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Q4. Answer the question about Python, tell difference between of tuple and list, if accessed out of bound vector element what's the result? what's ABC class? Again felt like exam rather than interview. and ver...read more
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Q5. Let's go through CV again, and judged the CV experience and sections, saying "Looks like you have SOME experience in the past". After such sentence I felt anger towards them, not polite at all.
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String reverse in java

Q1. Arraylist vs linkedlist
Ans. 
ArrayList is faster for accessing elements, LinkedList is better for frequent insertions and deletions.
• ArrayList uses dynamic array to store elements, LinkedList uses doubly linked list.

• ArrayList is faster for accessing elements by index, LinkedList is better for frequent insertions and deletions.

• Example: ArrayList is suitable for scenarios where random access is required, LinkedList is suitable for scenarios where fre
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Q2. Interface vs abstract
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Interface defines a contract for classes to implement, while abstract class can have some implementation.
• Interface can only have abstract methods and constants, while abstract class can have abstract methods, concrete methods, and member variables.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used for achieving multiple inheritance in Java, while abstract classes ...read more
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