spring boot interview questions github

Spring Boot is an open source Java-based framework used to create stand-alone, production-grade applications. It is a lightweight and efficient way of creating microservices, web applications and other services. As such, it is rapidly becoming popular in the development world. The increasing demand for Spring Boot developers has made it important to know the best Spring Boot Interview Questions. While a great deal of resources exist on the internet, GitHub offers a wide variety of quality content and tutorials. In this blog post, we will be discussing the top Spring Boot interview questions that are available on GitHub. We will also be exploring the various ways in which these questions can be used to prepare for a successful Spring Boot interview. With that said, let’s dig into the best Spring Boot Interview Questions on GitHub so you can ace your next interview!

Database Connectivity – JDBC, Spring JDBC & JPA
  • What is Spring JDBC? How is different from JDBC?
  • What is a JdbcTemplate?
  • What is a RowMapper?
  • What is JPA?
  • What is Hibernate?
  • How do you define an entity in JPA?
  • What is an Entity Manager?
  • What is a Persistence Context?

Spring Boot Interview Questions and Answer | Most asked / Tricky Interview Questions | Code Decode

What is Spring Boot?

First and foremost, Spring Boot is not a framework; rather, it is a tool that makes it simple to create standalone applications with few or no configurations. It’s a method for creating spring-based applications with minimal configuration. It offers defaults for configuration of code and annotations to quickly launch new spring projects in no time. To create applications that are ready for production, it makes use of both existing spring projects and projects from outside sources. It offers a set of starter Poms or Gradle build files that can be used to add necessary dependencies and to make auto configuration easier. In accordance with the libraries on its classpath, Spring Boot automatically configures the necessary classes. If your application wants to interact with a database, it will automatically set up a connection and the Data Source class if Spring Data libraries are on the class path.

What are the advantages of using Spring Boot?

  • It is very easy to develop Spring Based applications with Java or Groovy.
  • It reduces lots of development time and increases productivity.
  • It avoids writing lots of boilerplate Code, Annotations and XML Configuration.
  • It is very easy to integrate Spring Boot Application with its Spring Ecosystem like Spring JDBC, Spring ORM, Spring Data, Spring Security etc.
  • It follows “Opinionated Defaults Configuration” Approach to reduce Developer effort
  • It provides Embedded HTTP servers like Tomcat, Jetty etc. to develop and test our web applications very easily.
  • It provides CLI (Command Line Interface) tool to develop and test Spring Boot (Java or Groovy) Applications from command prompt very easily and quickly.
  • It provides lots of plugins to develop and test Spring Boot Applications very easily using Build Tools like Maven and Gradle
  • It provides lots of plugins to work with embedded and in-memory Databases very easily.
  • Tomcat Jetty Undertow To enable this feature, set the server. compression. enabled property to true in the application. properties.

    Q37. No, Spring Boot does not offer an out-of-the-box solution in the event that our application needs multiple DataSources (e.g., a database). g. multi-tenant system). To enable support for numerous data sources, Spring Boot offers multiple extension points. Read multiple data sources with Spring Boot for more detail.

    contextClass = this protected ConfigurableApplicationContext createApplicationContext() Class applicationContextClass; if (contextClass == null) { try { switch (this. webApplicationType) { case SERVLET: contextClass = Class. forName(DEFAULT_SERVLET_WEB_CONTEXT_CLASS); break; case REACTIVE: contextClass = Class. forName(DEFAULT_REACTIVE_WEB_CONTEXT_CLASS); break; default: contextClass = Class. Unable to create a default application context, please specify an application context class, ex; forName(DEFAULT_CONTEXT_CLASS); catch (ClassNotFoundException ex); throw new IllegalStateException; return (ConfigurableApplicationContext) BeanUtils instantiateClass(contextClass); } Copy For more information, refer to the SpringApplication.

    Spring boot specified various common default properties inside application. properties to support Logging, AOP, Server configurations, caching, JPA, etc. In every situation, we don’t have to specify all the default properties. We can specify them only on-demand.

    Q19. The Spring Framework offers a wealth of support for working with SQL databases, ranging from direct JDBC access using JdbcTemplate to comprehensive “object-relational mapping” technologies like Hibernate. Use the “starters” spring-boot-starter-data-jpa or spring-boot-starter-jdbc to connect to and configure the database for your Spring Boot application. To configure datasource configuration, use the application. properties file in your application.

    What are the disadvantages of using Spring Boot?

    Converting existing or legacy Spring Framework projects into Spring Boot Applications is a very difficult and time-consuming process. It is applicable only for brand new/Greenfield Spring Projects.


    What are the spring boot interview questions?

    Top Spring Boot Interview Questions for Experienced Developers
    • What annotations are used to create an Interceptor? …
    • What is a Swagger in Spring Boot? …
    • What are Profiles in Spring Boot? …
    • What differentiates Spring Data JPA and Hibernate? …
    • How are the @RestController and @Controller Annotation different?

    How does spring boot reduce boilerplate code?

    Spring boot avoids all these boilerplate codes. Programmers must write a lot of boilerplate code in order to perform simple tasks. Therefore, spring boot increases productivity by eliminating boilerplate code and reducing the effort required from programmers.

    What is Spring Boot framework?

    An open source Java-based framework called Spring Boot is used to build micro Services. It was created by Pivotal Team and is used to create independent, production-ready spring applications. You will learn about Spring Boot in this chapter and become familiar with some of its fundamental ideas.

    What is Spring MVC framework?

    A Java framework called Spring MVC is used to create web applications. Model-View-Controller (MVC) is the foundation upon which it is built, and it has all the essential components of the Spring framework, including Dependency Injection and Inversion of Control.

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