Pinnacle Infotech Electrical Design Engineer Interview Questions, Process, and Tips

Q1. Internal working of hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• HashMap uses the hashCode() method of ke...read more
Answered by AI
Add your answer
Q2. What are the feature of jdk 8
Ans. 
JDK 8 features include lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to write code in a more concise and readable way.

• Functional interfaces enable the use of lambda expressions.

• Streams provide a way to work with sequences of elements efficiently.

• Default methods allow interfaces to have concrete methods.

• Date and Time API improvements.
Answered by AI
Add your answer

Q1. Basic concepts of java , spring boot , angular and some coding Average interview . easy to crack if basics are clear
Add your answer

Q1. Little more deep on java , angular and some scenario based questions
Add your answer

Objective technical question was given.

Q1. Java, DB, Spring, UI related questions asked.
Add your answer
Q2. CoreJava Multi-threading
Add your answer
Q3. Database many to many relattionship related question
Add your answer

Q1. Mutli-threading related questions
Add your answer

Q1. Salary expectation and joining details.
Add your answer

Q1. Java 8 vs 7 case studies. Stream vs collections case studies.
Ans. 
Java 8 introduced streams which are more efficient than collections in certain cases.
• Streams are useful for processing large amounts of data in parallel

• Collections are better for small amounts of data or when modifying data

• Java 8's stream API provides a functional programming approach to data processing

• Java 7's collections API is more traditional and imperative

• Example: Using streams to filter and map data from a databa...read more
Answered by AI
Add your answer

Q1. Add one to a given String of number
Ans. 
Add one to a given String of number
• Convert the string to integer, add one, and convert back to string

• Handle edge cases like leading zeros

• Consider using built-in functions like parseInt() and toString()
Answered by AI
Add your answer

Q1. Hash map implementation. exception handling in lambda exp. microservices architecture.
Add your answer

Q1. Why u want to join?
Add your answer

Q1. Explained below
Add your answer
Q2. As given below with
Add your answer

Hacker Rank Questions - String Manipulation - level easy

Hacker Rank Questions - 2D matrix - level easy

Q1. Expected Salary
Add your answer
Q2. Why do you choose Apexon?
Ans. 
I choose Apexon for its innovative technology, strong company culture, and opportunities for growth.
• Innovative technology: Apexon is known for its cutting-edge solutions and commitment to staying ahead of industry trends.

• Strong company culture: I value the emphasis Apexon places on teamwork, collaboration, and employee development.

• Opportunities for growth: Apexon offers a clear path for career advancement and continuou
Answered by AI
Add your answer

Q1. Difference between deep and shallow copy
Ans. 
Deep copy creates a new object and recursively copies all nested objects, while shallow copy creates a new object and copies the references to nested objects.
• Deep copy duplicates all levels of the object hierarchy, ensuring that changes in the copied object do not affect the original object.

• Shallow copy only duplicates the top-level object, so changes in the copied object may affect the original object.

• Deep copy is mor...read more
Answered by AI
Add your answer
Q2. Ways to set values in form groups
Ans. 
Ways to set values in form groups
• Use setValue() method to set values in form groups

• Use patchValue() method to set values in form groups

• Use reset() method to set values in form groups
Answered by AI
Add your answer
Q3. How to add dynamic component in view
Ans. 
To add a dynamic component in a view, use a framework or library that supports dynamic rendering and component creation.
• Use a framework like React or Angular that allows for dynamic component creation

• Create a component factory or use a component resolver to dynamically create and render components

• Pass data or props to the dynamic component to customize its behavior

• Update the view or component tree to include the dynami
Answered by AI
Add your answer