For Java Application Development, Spring Boot questions are a big part of the coding interviews. Spring Boot is used to build standalone microservices and is based on Spring Framework. It can create a reliable Java application from scratch due to its low configuration and monitoring features such as tomcat, jetty, and more.
Spring Boot interview questions are tricky to answer as it’s a vast topic to cover. It is essential to follow a thorough preparation strategy and practice some mock Java Spring Boot interview questions. Some of the important concepts you should focus on are Spring Boot auto-configuration, Spring Boot CLI, Spring Boot Actuators, and Spring Boot starter POMs.
Interview Kickstart helps you understand the required skills to grab jobs at top tech companies in your learning journey. When you start your prep, be sure to check out our technical interview checklist, interview questions page, and salary negotiation ebook to get interview-ready!
Having trained over 9,000 software engineers, we know what it takes to crack the most challenging tech interviews. Since 2014, Interview Kickstart alums have landed lucrative offers from FAANG and Tier-1 tech companies, with an average salary hike of 49%. The highest ever offer received by an IK alum is a whopping $933,000!
At IK, you get the unique opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies.
Want to nail your next tech interview? Sign up for our FREE Webinar.
Are you a software engineer and want to know the kind of Spring Boot questions asked in coding interviews? Read further to learn which ones you should prepare.
Here’s what we’ll discuss in this article:
Let’s look at some of the differences between Spring and Spring Boot.
Let’s look at some of the advantages of using Spring Boot:
Check out How to Reverse a String in Java here.
Here’s a list of topics you can prepare for your Spring Boot interview:
1. What are the key components of Spring Boot?
Below are the four key components of Spring Boot:
2. How does Spring Boot work?
Spring Boot automatically configures your application based on the dependencies you add to the project using annotation. It scans all the components in the project using @ComponentScan annotation.
3. What are starter dependencies?
Spring Boot starter is a maven template which contains a collection of all relevant transitive dependencies which are needed to start a particular functionality. To create a web application, we must import the spring-boot-starter-web dependency.
<artifactId> spring-boot-starter-web </artifactId>
4. What are the basic annotations that Spring Boot offers?
Spring Boot's primary annotations are found in org.springframework.boot.autoconfigure and its sub-packages. A few of them are:
5. What is the difference between RequestMapping and GetMapping?
RequestMapping can be used with GET, POST, PUT, and other request methods using the method attribute on the annotation. GetMapping, on the other hand, is an extension of RequestMapping that helps you improve request clarity.
6. What is the use of Profiles in Spring Boot?
Profiles keep the configuration of different environments (DEV, QA, PROD) separate.
7. How to enable debugging log in Spring Boot application?
There are three ways to enable debugging logs:
8. What is Dependency Injection?
Dependency Injection is the process of injecting dependent bean objects into target bean objects. There are three types of dependency injection:
9. Explain how to deploy to another server using Spring Boot?
Follow the steps below to deploy a different server with Spring Boot:
10. What are the steps to connect an external database like MySQL or Oracle?
To connect an external database:
Q1. What is the difference between Spring and Spring Boot?
Spring Boot is a framework built on top of Spring and is widely used to develop REST APIs. IT has embedded servers such as Tomcat and Jetty.
Q2. Is Spring Boot hard to learn?
Spring Boot has features like starter dependency, auto-configuration, Spring Boot CLI, Spring Initializr, and Spring Boot Actuator, making Java development easy and fun.
Q3. How to prepare for a Spring Boot interview?
Understand the basic concepts of Spring Boot first. It helps you in understanding the advanced questions later. When a topic is asked, be ready to explain the concepts with the help of an example. It shows the interviewer how good you are with the concepts.
Q4. Which are some Spring Boot interview questions?
Some basic Spring Boot Interview Questions are: What does @SpringbootApplication annotation do? What is a Spring Boot starter? Describe some embedded containers that Spring Boot supports and Explain some Spring Boot annotations.
Q5. What is the starting point of spring boot application?
The entry point of a Spring Boot application is a class that contains @SpringBootApplication annotation. This class needs to have the primary method to run the Spring Boot application.
Since its inception in 2014, Interview Kickstart has helped thousands of experienced engineers realize their true calling. We aim to help engineers get better acquainted with the intricacies of their chosen field and provide them with all the guidance they need to clear interviews with tech giants.
Knowing very well that clearing an interview requires much more than sound technical knowledge, we train you in a manner that helps you develop a winner's stride. IK is your golden ticket to land the job you deserve.
Want to learn more? Sign up for our FREE webinar on How to Nail Your Next Tech Interview.