Spring Boot Interview Questions(JNNC Technologies)

1) What is Spring Boot?

Spring Boot is a Spring module which provides RAD (Rapid Application Development) feature to Spring framework.

It is used to create stand alone spring based application that you can just run because it needs very little spring configuration.

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2) What are the advantages of Spring Boot?

• Create stand-alone Spring applications that can be started using java -jar.
• Embed Tomcat, Jetty or Undertow directly. You don't need to deploy WAR files.
• It provides opinionated 'starter' POMs to simplify your Maven configuration.
• It automatically configure Spring whenever possible.

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3) What are the features of Spring Boot?

• Web Development
• SpringApplication
• Application events and listeners
• Admin features

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4) How to create Spring Boot application using Maven?

There are multiple approaches to create Spring Boot project. We can use any of the following approach to create application.

• Spring Maven Project
• Spring Starter Project Wizard
• Spring Initializr
• Spring Boot CLI

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5) How to create Spring Boot project using Spring Initializer?

It is a web tool which is provided by Spring on official site. You can create Spring Boot project by providing project details.

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It is a tool which you can download from the official site of Spring Framework. Here, we are explaining steps.

Download the CLI tool from official site and For more information 

7) How to create simple Spring Boot application?

To create an application. We are using STS (Spring Tool Suite) IDE and it includes the various steps that are explaining in steps.

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8) What are the Spring Boot Annotations?

The @RestController is a stereotype annotation. It adds @Controller and @ResponseBody annotations to the class. We need to import org.springframework.web.bind.annotation package in our file, in order to implement it.

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9) What is Spring Boot dependency management?

Spring Boot manages dependencies and configuration automatically. You don't need to specify version for any of that dependencies.

Spring Boot upgrades all dependencies automatically when you upgrade Spring Boot.