Spring Boot Interview questions

Whether you are interviewing for the first job or for the job, which you going to switch, you can always feel that nervousness and tension. The developers are always thinking about codes and especially when there is an interview, they can feel they are going nuts over it. In the recent time, demand for spring boot developers has increased a lot as spring boot offers quick application advancement structure to spring system.

Prepare enough by having different ideas of spring boot including various features, venture, maven project, starter venture wizard, application, annotations, dm, properties, starters, and actuator. There are various spring boot jobs in the market, however, to be chosen in that specific post, you must clear the interview. In the current time, there is exceptionally outrageous competition in the market when it comes to interviewing and getting a break in MNC.

Also, Read: Spring Interview Questions

Read Spring boot interview with Answers

We have provided you some of the questions, which are normally asked in Spring boot tough interview and which will give you a head start. You never know which of these questions you may get in your spring boot interview:

#1 How to add custom JS code in Spring Boot?

/src/main/resources/static. is the suggested folder for static content.
You can create a JS file by sending an alert
/src/main/resources/static/js/custom.js
alert("I'm active");

#2 Would you be able to Control Logging with Spring Boot? How?

Yes, we can control logging with spring boot.

#3 What are esteem properties of Spring Boot?

Spring Boot gives different properties, which can be indicated in our project’s application. Properties record. These properties have default values, and you can set that inside the properties record. Properties are utilized to set qualities like a server-port number, database association configuration and much more.

#4 How to enable HTTP/2 support in Spring Boot?

Please provide an answer

#5 What does Spring Boot Starter Pom mean? Why Is It Useful?

Starters are an arrangement of advantageous reliance descriptors that you can incorporate into your application. The starters contain a considerable amount of the dependencies that you have to get a task up and running rapidly and with a steady, supported a set of managed transitive conditions.

The starter POMs are helpful reliance descriptors that can be added to your application’s Maven. In another word, if you are building up a project that utilizes Spring Batch for batch preparing, you need to incorporate spring-boot-starter-bunch that will import all the required conditions for the Spring Batch application. This decreases the burden of looking at and designing all of the conditions required for a structure.

#6 What do Dev Tools in Spring boot mean?

Spring boot accompanies Dev Tools, which is acquainted with increase the profitability of designer. You don’t have to redeploy your application each time you influence the changes. The developer can reload the progressions without restart of the server. It maintains a strategic distance from the agony of redeploying application each time when you roll out any improvement. This module will can’t be utilized in a production environment.

#7 What are Actuator in Spring Boot?

#8 What Is the Configuration File Name, which is used By Spring Boot?

The configuration file name, which is utilized as a part of spring boot projects is application.properties. This document is very important where we would overwrite all the default setups. Ordinarily, we need to hold this document under the assets folder of the project.

#9 What does Actuator in Spring Boot mean?

Spring Boot Actuator is a sub-task of Spring Boot. It adds a few creation review administrations to your application with little exertion on your part. There are also has numerous features added to your application out-of-the-case for dealing with the administration in a production (or other) condition. They’re basically used to uncover diverse kinds of data about the running application – health, measurements, information, dump, env and so on.

#10 Why in spring boot “Opinionated ” is used?

It takes after “Opinionated Defaults Configuration” Approach to lessen Developer exertion. Because of the Opinionated perspective of spring boot, what is required to begin yet additionally we can get out if not appropriate for the application. Spring Boot utilizes sensible defaults, “opinions,” for the most part in light of the classpath substance.

#11 What are the various Advantages Of Using Spring Boot?

Here are some of the various advantages of using Spring Boot:

  • It is quite easy to create Spring Based applications with Java or Groovy.
  • It lessens lots of improvement time and expands profitability.
  • It abstains from writing lots of standard Code, Annotations, and XML Configuration.
  • It is quite easy to coordinate Spring Boot Application with its Spring Ecosystem like Spring JDBC, Spring ORM, Spring Data, Spring Security and so forth.
  • It takes after “Opinionated Defaults Configuration” Approach to diminish Developer effort
  • It gives Embedded HTTP servers like Tomcat, Jetty and more to create and test our web applications effectively.
  • It gives CLI (Command Line Interface) tool to create and test Spring Boot (Java or Groovy) Applications from commanding prompt very easily and rapidly.
  • It gives lots of modules to create and test Spring Boot Applications effectively utilizing Build Tools like Maven and Gradle
  • It provides loads of plug-in to work with implanted and in-memory Databases effortlessly.

#12 How to connect to an external database like MSSQL or oracle with Spring boot?

It is done in the following steps.

Step 1 -

The first step to connect the database like Oracle or MySql is adding the dependency for your database connector to pom.xml.

Step 2 -

The next step is the elimination of H2 Dependency from pom.xml

Step 3 -

Step 3 includes the schema and table to establish your database.

Step 4 -

The next step is configuring of the database by using Configure application.properties to connect to your database.

Step 5-

And the last step is to restart your device and your connection is ready to use.

Also Prepare: Frequently Asked Vaadin interview questions

#13 How to make Spring Boot venture utilizing Spring Initializer?

The Spring Initializer is a web application that can produce a Spring Boot project structure for you. It doesn’t create any application code. However, it will give you an essential project structure and either a Maven or a Gradle build specification to fabricate your code with. You should simply compose the application code.

Spring Initializer can be utilized a few different ways, including:

  • An online interface.
  • Via Spring Tool Suite.
  • Using the Spring Boot CLI.

#14 What Is the Configuration File Name Used By Spring Boot?

The configuration record utilized as a part of spring boot ventures is an application. Properties. This record is imperative where we would overwrite all the default designs. Regularly we need to hold this document under the assets envelope of the project.

#15 Explain the difference between JPA and Hibernate?

JPA is a specification/Interface whereas Hibernate is one of the JPA implementations.

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