Introduction
Welcome to Our new blog Spring Boot Java Interview Questions.
In the dynamic landscape of Java development, proficiency in Spring Boot has become a key asset for developers aspiring to build robust and scalable applications. As organizations increasingly adopt microservices architectures and cloud-native solutions, the demand for professionals well-versed in Spring Boot has surged. This interview guide is tailored to assist you in navigating the intricate terrain of Spring Boot Java interviews. Whether you are an experienced developer seeking to brush up on your skills or a newcomer preparing for your first interview, these commonly asked questions will not only test your knowledge but also provide insights into the core concepts and best practices of Spring Boot. Let’s delve into the world of Spring Boot Java interview questions to enhance your readiness and confidence in facing interviews head-on.
In this blog we will discuss more about Spring Boot Java Interview Questions asked in the interview.
Spring Boot Java Interview Questions
1. What is Spring Boot?
Spring Boot is a framework that simplifies the development of Java-based applications by providing a set of conventions and defaults for application development. It is built on top of the Spring framework and aims to make it easy to create production-ready applications with minimal configuration.
2. Explain the difference between Spring and Spring Boot.
Spring is a comprehensive framework for Java development, while Spring Boot is an extension of the Spring framework that simplifies the development of production-ready applications by providing defaults for configuration and eliminating boilerplate code.
3. What is inversion of control (IoC) in the context of the Spring framework?
Inversion of Control (IoC) is a design principle where the control flow of a program is inverted. In the context of Spring, IoC means that the framework is responsible for managing the lifecycle of objects (beans) and injecting their dependencies. This is achieved through techniques such as dependency injection.
4. Explain the concept of dependency injection in Spring.
Dependency Injection is a design pattern in which the dependencies of a class are provided externally rather than created within the class. In Spring, this is often achieved through constructor injection or setter injection. The IoC container is responsible for injecting the required dependencies when creating beans.
5. What is the role of the `@SpringBootApplication` annotation in a Spring Boot application?
The `@SpringBootApplication` annotation is a convenience annotation that combines `@Configuration`, `@EnableAutoConfiguration`, and `@ComponentScan`. It is commonly used to mark the main class of a Spring Boot application, indicating that it is a configuration class, enables auto-configuration, and performs component scanning.
6. Explain the difference between JPA and Hibernate.
JPA (Java Persistence API) is a specification for managing relational data in Java applications, while Hibernate is an implementation of this specification. Hibernate provides additional features beyond the standard JPA, and it is often used as the JPA provider in Spring applications.
7. What is the purpose of the `application.properties` (or `application.yml`) file in a Spring Boot project?
The `application.properties` or `application.yml` file is used for configuring various properties of a Spring Boot application, such as database connection settings, server port, logging configuration, etc. It allows externalizing configuration, making it easy to customize an application without modifying the source code.
8.How does Spring support transaction management?
Spring provides a declarative approach to transaction management using annotations (`@Transactional`). By annotating methods or classes with `@Transactional`, developers can define the boundaries of transactions, and Spring takes care of managing transactions, including commit and rollback operations.
9. What is Spring Security, and how does it work?
Spring Security is a powerful and customizable authentication and access control framework for Java applications. It provides comprehensive security services for Java EE-based enterprise software applications. Spring Security uses a series of filters and providers to secure applications, allowing developers to configure authentication and authorization rules.
10. Explain the purpose of Spring Boot Starters.
Spring Boot Starters are a set of convenient dependency descriptors that you can include in your application’s build file. They are meant to simplify the dependency management process by providing a set of dependencies commonly used together. For example, the `spring-boot-starter-web` includes dependencies for building web applications with Spring MVC.
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