Splenta Systems Junior Java Developer Interview Questions and Answers

Q1. Ddl dml dcl TCL join
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Q2. Ddl dml dcl TCL join no multiple questions
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Q3. No multiple questions
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Aptitude test like technical questions

Coding test for technical analysis

Q1. HR is asking same basic questions java
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Q1. Technical questions asked
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Q2. Full stack java developer
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Q1. Core java , Collections, OOP
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Q2. Spring , Mysql, Hibernate, Machine test
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Q1. Self introduction , Java releted questions
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Q1. Company related questions and salary
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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.
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Q2. What are access modifiers and non access modifiers
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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; }
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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.
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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
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Q5. What is containerization
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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.
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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...read more
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Q7. Programming question on stream like finding the longest string in a given list of string
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Complete Coding Test to write a complete application code.

Q1. Definition based questions on jav
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Q2. Micro service Design Patterns
Ans. 
Microservice design patterns are architectural patterns used to design and implement microservices.
• Service discovery and registration

• Circuit breaker pattern

• API gateway pattern

• Event sourcing pattern

• Saga pattern
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Q1. Java Springboot Microservices
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Q1. Questions on Java spring AWS and Kafka
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Q1. Current salary? Expected salary?
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Q1. Questions were around microservices design pattern, AWS lambda, ECS and EC2
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Q1. Asked about work experience . 1. what is VPC? 2. When 3rd party API is restricted to hit 5 requests at a time and you need to design a microservice to consume that API what will be your design approach?
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