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Hewlett Packard Enterprise Java Developer Interview Questions, Process, and Tips
Hewlett Packard Enterprise Java Developer Interview Experiences
1 interview found
Malashree Mugali
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(7 Questions)
- Q1. What are primitive and non primitive data types
- Ans.
Primitive data types are basic data types provided by the programming language, while non-primitive data types are created by the programmer.
Primitive data types include int, float, double, char, boolean, etc.
Non-primitive data types include arrays, classes, interfaces, etc.
Primitive data types store actual values, while non-primitive data types store references to objects.
- Q2. What are access modifiers and non access modifiers
- Ans.
Access modifiers control the visibility of classes, methods, and variables. Non-access modifiers provide additional functionality.
Access modifiers: public, private, protected, default
Non-access modifiers: static, final, abstract, synchronized
Example: public class MyClass { private int myVar; }
- Q3. What are all Java 8 features and explain the one which we have used in our project
- Ans.
Java 8 features include lambda expressions, functional interfaces, streams, and more.
Lambda expressions allow concise syntax for defining anonymous functions.
Functional interfaces can have only one abstract method and are used for lambda expressions.
Streams provide a way to process collections of objects in a functional style.
Optional class helps to avoid NullPointerException by wrapping a value that may be null.
- Q4. CICD tools which we have used explain in high level
- Ans.
CICD tools automate the process of building, testing, and deploying code changes.
Popular CICD tools include Jenkins, GitLab CI/CD, CircleCI, and Travis CI
These tools help in automating the software development lifecycle
They enable continuous integration, continuous delivery, and continuous deployment
CICD tools help in improving code quality, reducing manual errors, and increasing development speed
- Q5. What is containerization
- Ans.
Containerization is a lightweight, portable, and self-sufficient way to package and run applications.
Containerization involves encapsulating an application and its dependencies into a container image.
Containers are isolated from each other and share the host OS kernel.
Popular containerization platforms include Docker and Kubernetes.
Containerization allows for easy deployment and scaling of applications.
- Q6. What is indexing in sql
- Ans.
Indexing in SQL is a technique used to improve the performance of queries by creating a data structure that allows for faster retrieval of data.
Indexes are created on columns in a database table to speed up the retrieval of rows that match a certain condition in a query.
They work similar to the index in a book, allowing the database to quickly locate the rows that satisfy the query.
Indexes can be created using a single...
- Q7. Programming question on stream like finding the longest string in a given list of string
Skills evaluated in this interview
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Selected
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
(6 Questions)
- Q1. Java 8 , java 11 and java 17 features?
- Ans.
Java 8 introduced lambda expressions, Java 11 added local-variable syntax for lambda parameters, and Java 17 included sealed classes and pattern matching.
Java 8 introduced lambda expressions for functional programming.
Java 11 added local-variable syntax for lambda parameters to simplify code.
Java 17 included sealed classes to restrict inheritance and pattern matching for instanceof checks and type casts.
- Q2. Dispatcher servlet, design patterns
- Q3. @SpringbootApplication annotation, actuators
- Q4. String Coding question with java 8 features such as lambda function and stream api
- Q5. Number of words in a string
- Ans.
Count the number of words in a given string.
Split the string by spaces and count the number of resulting elements.
Handle edge cases like multiple spaces or empty strings.
Consider punctuation marks as part of words unless specified otherwise.
- Q6. Microservice design patterns
(2 Questions)
- Q1. Basics of java like string ,string builder ,Buffer,scp
- Q2. Spring boot annotaions
I applied via Naukri.com
(2 Questions)
- Q1. Circuit breaker pattern
- Q2. Aws S3 access via ECS
(2 Questions)
- Q1. Time Complexity
- Q2. Coding question and SQL queries
(2 Questions)
- Q1. Chvvvv vvbbbbb isush shjshs jdudjdj
- Q2. Vvvhjjjc hhhjVv hsudjsj hsudjsh hdhdh
Interview Preparation Tips
I was interviewed in Nov 2024.
(2 Questions)
- Q1. Prime number program
- Ans.
A program to check if a given number is prime or not.
Create a function to check if a number is prime by iterating from 2 to the square root of the number.
If the number is divisible by any number other than 1 and itself, it is not prime.
Handle edge cases like 0, 1, and negative numbers separately.
- Q2. 3rd highest salary employee
- Ans.
To find the 3rd highest salary employee, we can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
Use a SQL query to select distinct salaries in descending order
Use 'LIMIT 1 OFFSET 2' to get the 3rd highest salary
Join this result with the employee table to get the employee details
(2 Questions)
- Q1. Explain how hashmap internally works
- Ans.
HashMap internally uses an array of linked lists to store key-value pairs.
HashMap uses hashing to determine the index of the key in the array.
If multiple keys hash to the same index, a linked list is used to store them.
When retrieving a value, the key is hashed to find the index and then the linked list is searched for the key.
- Q2. Difference between vector and Arraylist
- Ans.
Vector is synchronized and slower, ArrayList is unsynchronized and faster.
Vector is synchronized, ArrayList is not.
Vector is slower due to synchronization, ArrayList is faster.
Vector is legacy class, ArrayList is part of Java Collections framework.
Vector doubles its size when full, ArrayList increases by 50%.
Skills evaluated in this interview
(2 Questions)
- Q1. No one showed up to interview
- Q2. Even they don’t responded to my mails
Interview Preparation Tips
Praveen Pk
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
They asked question about myself
Gave codeing in advance java concepts
I applied via Job Portal and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. What is Springboot
- Ans.
Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.
Spring Boot eliminates the need for manual configuration by providing defaults for most settings.
It allows developers to quickly set up and run standalone Spring-based applications.
Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.
It promotes convention o...
- Q2. Questions on kafka
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