Spring Boot Interview Questions

Spring Boot interview Questions 1) What is Spring Boot?

Spring Boot is a spring module which provides RAD (Rapid application development) feature to Spring framework.

It's used to create stand alone spring based application so you can just run because it needs very little spring Config Uration.

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2) What is 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 is 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 is 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 are provided by Spring on official site. You can create Spring Boot project by providing project details.

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6) How to create Spring boot project using the boot CLI?

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

Download the CLI tool from official site and to more information click here.

7) How do I create simple Spring Boot application?

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

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8) What is the Spring Boot Annotations?

The @RestController is a stereotype annotation. It adds @Controller and @ResponseBody annotations to the class. We need to the 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 the that dependencies.

Spring boot upgrades all dependencies automatically if you upgrade Spring boot.

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What is the Spring Boot properties?

Spring Boot provides various properties which can be specified inside our project ' s application.properties file. These properties has default values and you can set that inside the properties file. Properties is used to set values Like:server-port number, database connection configuration etc.

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What is the Spring Boot starters?

Starters is a set of convenient dependency descriptors which we can include in our application.

Spring Boot provides built-in starters which makes development easier and rapid. For example, if we want-get started using Spring and JPA for database access, just include the spring-boot-starter- DATA-JPA dependency in your project.

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What is Spring Boot actuator?

Spring Boot provides actuator to monitor and manage our application. Actuator is a tool which have HTTP endpoints. When application are pushed to production, you can choose to manage and monitor your application using HTTP endpoints.

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What is thymeleaf?

It is a server side Java template engine for Web application. It ' s main goal is to bring elegant natural templates to your Web application.

It can be integrate with the Spring Framework and ideal for HTML5 Java Web applications.

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How to use thymeleaf?

In order to use Thymeleaf we must add it into your pom.xml file like:

 

1. < Dependency>    
2. <groupid>org.springframework.boot</groupid>    
3. <artifactid< span class= "tag" >>spring-boot-starter-thymeleaf</artifactId>    
4. </dependency>    

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How to Connect Spring Boot to the database using JPA?

Spring Boot provides SPRING-BOOT-STARTER-DATA-JPA starter to connect spring application with relational database efficiently. You can use the IT into Project POM (Project Object Model) file.

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How to Connect Spring Boot application to database using JDBC?

Spring Boot provides starter and libraries for connecting to We application with JDBC. Here, we is creating an application which connects with Mysql database. It includes the following steps to create and setup JDBC with Spring Boot.

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What's @RestController annotation in Spring Boot?

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

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What are @RequestMapping annotation in Spring Boot?

The @RequestMapping annotation is used to provide routing information. It tells to the Spring, any HTTP request should maps to the corresponding method. We need to import org.springframework.web.annotation the package into our file.

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How to Create Spring Boot application using spring Starter Project Wizard?

There is one more a-to-create Spring Boot project in STS (Spring Tool Suite). Creating project by the using IDE is always a convenient. Follow the following steps in order to create a Spring Boot application by using this wizard.

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Spring Vs spring Boot?

Spring is a Web application framework based on Java. IT provides tools and libraries to create a complete cutomized Web application.

Wheras Spring Boot is a spring module which was used to create spring application project, can just run.

Spring Boot Interview Questions