Best spring boot interview questions in 2023!

Last Updated on April 13, 2024 by Ali Hamza

Your search for Spring Boot interview questions is done right here. A stand-alone solution that favours convention over configuration is called Spring Boot. New technologies are, however, quickly emerging to simplify the application procedure for building permits.

As a result, Spring Boot is now among the most used Java solutions for developing online applications. This article may be your route if you’re looking for some Spring Boot interview questions with adequate explanations. The 30 most important Spring Boot interview questions are covered here, which will undoubtedly help you master the interview.

Why is using Spring Boot necessary?

And as we all know, one of the most widely used programming languages worldwide is Java.

And for the same reason, the majority of software firms now use Spring Boot as part of their tech stack.

Additionally, it is continuously developing new techniques and technologies to boost the effectiveness of application development.

Additionally, you won’t need to worry about security and proper configuration while using Spring Boot to construct any applications.

Despite the size of the Spring Boot community, there are numerous free online learning resources available to you.

Because of this, we can claim that it is a multi-threaded technology. Let’s examine a few more advantages of Spring Boot.

Easy access to the command-line interface is provided by Spring Boot.

• It helps cut down on the amount of time needed to create any application.
• Java Beans and XML configurations can be arranged in many ways with the help of Spring Boot.
• Integration tests can be set up by default in Spring Boot, which makes it simpler to create and test Java-based applications.
• It aids in reducing human labour such as writing boilerplate code and annotating.

Top 30 Spring Boot interview questions, fully explained with examples

With thorough explanations and examples, we’ll go over a few more crucial Spring Boot questions in this part.

We are confident that these inquiries will help you succeed in the interview and maintain your good standing in this field.

How does Spring Boot work and why do you need it?

It is the first and most important question you must know the answer to in order to ace the interview.

Spring Boot is an open-source framework that aids in stand-alone development, as we previously discussed.

After examining all of Spring Boot’s applications, we can conclude that it facilitates the elimination of several configurations and dependencies.

Its auto-dependency resolution, embedded HTTP servers, and default setup for integration tests are all major pluses that contribute to the quick creation and testing of applications.

You then questioned the necessity of using Spring Boot.

In response, I’d like to highlight that Spring Boot provides benefits like admin support and the standard configuration for test integrations that will make it easier to design and test Java products.

The best part is that it cuts down on the amount of time needed to create any application.

Therefore, these are the justifications for using Spring Boot.

Q2. What are the advantages of spring boot interview questions? – Interview inquiries for Spring Boot

I’ll go over a few advantages of Spring Boot below.

It makes the command-line interface accessible and convenient.

The management of XML configurations and Java Beans is flexible with Spring Boot.

Servlet containers are incorporated in Spring Boot.

• It makes it easier to design and test Java-based applications by providing a default configuration for integration tests.
• It offers plug-ins to make dealing with embedded and in-memory databases easier for you.
• It comes with an inbuilt HTTP server, similar to Tomcat and Jetty, for testing web applications.
• It will maximise the developing team’s effectiveness.
• It lessens all the manual work, such as writing boilerplate code and annotating, which is a major benefit.

1. Logging and security

All of the apps created by Spring Boot will be secure thanks to this capability.

2. Spring Initializer

It is an application that will lessen the amount of manual labour you have to do when setting up the project’s structure.

3. Spring Boot CLI

4. Spring Boot Actuator

You can monitor and manage the Spring Boot apps with the aid of this Spring Boot framework subsidiary project.

Explain the distinction between Spring Boot and Spring in question four.

On the other hand, Spring Boot is a Spring module that aids with the development of standalone.

Though Spring Boot is simpler than the Spring framework. The spring framework also offers tools and libraries that are useful for developing unique web apps.

Q5. How to use May Maven for constructing a Spring Boot application?

There are numerous ways to establish a Spring Boot application using Maven, including the Spring Maven project, Spring Boot CLI, Spring Initializer, and Spring Starter project wizard.

Q6. Please provide a few external configuration sources.

Without a doubt, Spring Boot enables you to run the same programme in several settings.

But because it gives you support for external configuration, it is conceivable.

Spring Boot makes use of YAML files, environment variables, property files, command-line arguments, and system properties to mention configuration properties.

1. Properties specific to a profile

In a similar manner, these properties were loaded from the YAML files.

2. Application attributes

Spring Boot looks for the application properties like YAML files in order to load the properties.

Command-line attributes

Command-line properties provided by Spring Boot make it easier to translate arguments into properties.

What do you mean by the starts for the Spring Boots?

The convenience dependencies in the Spring Boot starts can help to simplify setups and minimise dependencies.

That means making development efficient will need getting rid of all dependencies and setups.

Spring Boot starts like Spring Boot starter-test, Spring Boot starter-security, Spring Boot starter-jdbc, Spring Boot starter-web, Spring Boot starter-aop, and Spring Boot starter-data-jpa are some of the more well-known ones.

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Describe what happens when a Spring Boot application is “Run as Java Application” in response to question 8.

A Spring Boot application that is set to “Run as Java application” will immediately start Tomcat as an HTTP server.