Spring & SpringBoot

Question 1

What is Spring Boot and What Are Its Main Features?

Answer 1

Spring Boot simplifies Java development by providing auto-configuration, embedded servers (Tomcat, Jetty), and a wide variety of starters that enable rapid development.

Question 2

What Are the Differences Between Spring and Spring Boot?

Answer 2

Spring is a framework for enterprise-level development, while Spring Boot simplifies Spring by offering embedded servers, auto-configuration, and minimal setup.

Question 3

How Can We Set up a Spring Boot Application With Maven?

Answer 3

You can create a Spring Boot application using spring-boot-starter dependencies and by setting the main class annotated with @SpringBootApplication.

Question 4

What is Spring Initializr?

Answer 4

Spring Initializr is a web-based tool to quickly generate Spring Boot project structures with selected dependencies.

Question 5

What Spring Boot Starters Are Available out There?

Answer 5

Examples include spring-boot-starter-web, spring-boot-starter-data-jpa, spring-boot-starter-security, and many others.

Question 6

How to Disable a Specific Auto-Configuration?

Answer 6

You can disable auto-configuration using @EnableAutoConfiguration(exclude = {…}) or by excluding it in the application.properties.

Question 7

How to Register a Custom Auto-Configuration?

Answer 7

Custom auto-configuration can be created by defining a class annotated with @Configuration and registering it in META-INF/spring.factories.

Question 8

Use of Conditional annotation in Spring Boot and examples.

Answer 8

@Conditional is used to control bean creation based on a condition (e.g., @ConditionalOnMissingBean, @ConditionalOnProperty).