Hello guys, if yous are preparing for your adjacent Java interview together with Job description mentioned most Spring framework, together with so yous should also gear upward about Spring Boot interview questions to avoid disappointment. The Spring Boot is similar a shot the criterion way to exercise Spring framework for Java evolution together with almost all the companies are moving from the traditional way of using Spring Framework to to a greater extent than modern Spring Boot way. Gone are the days, where questions similar guide maintain yous used Spring Boot was asked to the developer. Nowadays interview expects to a greater extent than cognition of Spring Boot from candidates together with in that place are reasons for it, which we'll explore inwards this article.
Spring Boot aims to simplify Java evolution alongside Spring yesteryear removing major hurting points alongside abide by to configuration, dependency management together with ease of development. As Craig Walls position inwards Spring kicking inwards Action, It's likely the best matter happened to Java afterward JDK 1.5 release and the introduction of Spring Framework itself about fifteen years back.
It introduces a host of features e.g. starter dependency, auto-configuration, embedded server, Spring Boot CLI, Spring Actuator, Spring Initializer etc to accept the Java evolution alongside Spring to adjacent score together with that's why Spring Boot interview questions are becoming increasingly mutual inwards Java interviews.
In guild to answer Spring Boot query alongside confidence, yous non alone know what occupation Spring Boot solves but also in-depth cognition of about of its substance features similar auto-configuration together with starter dependencies. These 2 features eliminate a lot of configuration together with setup piece of work from Spring-based Java application.
Btw, If yous are non familiar alongside them I start propose yous buy the farm through a beginners shape similar Spring Boot Essentials to acquire up-to-speed. Once yous guide maintain skilful cognition of Spring Boot, yous tin endeavor these questions.
They are also collected from Java interviews for both intermediate together with experienced Java developers e.g. from 2 to five years of experience.
1. What is Spring Boot? Why should yous exercise it?
Spring Boot is about other Java framework from Sring umbrella which aims to simplify the exercise of Spring Framework for Java development. It removes most of the hurting associated alongside dealing alongside Spring e.g. a lot of configuration together with dependencies together with a lot of manual setups.
Why should yous exercise it? Well, Spring Boot non alone provides a lot of convenience yesteryear auto-configuration a lot of things for yous but also improves the productivity because it lets yous focus alone on writing your describe of piece of work organisation logic.
For example, you don't demand to setup a Tomcat server to run your spider web application. You tin only write code together with run it every bit Java application because it comes alongside an embedded Tomcat server. You tin also create a JAR file or WAR file for deployment based on your convenience.
In short, in that place are many reasons to exercise Spring Boot. In fact, it's similar a shot the criterion way to prepare Java application alongside Spring framework.
2. What are about of import features of using Spring Boot?
This is a skilful subjective query together with used yesteryear the interviewer to guess the sense of a candidate alongside Spring Boot. Anyway, next are about of the of import features of Spring Boot framework:
1. Starter dependency
This characteristic aggregates mutual dependencies together. For example, if yous desire to prepare Spring MVC based RESTful services together with so instead of including Spring MVC JAR together with Jackson JAR file into classpath yous tin only specify spring-boot-web-starter together with it volition automatically download both those JAR files. Spring Boot comes alongside many such starter dependencies to ameliorate productivity.
2. Auto-Configuration
This is about other awesome features of Spring Boot which tin configure many things for you. For example, If yous are developing Spring spider web application together with Thymeleaf.jar is nowadays on the classpath together with so it tin automatically configure Thymeleaf template resolver, see resolver, together with other settings. H5N1 skilful cognition of auto-configuration is required to buy the farm an experienced Spring Boot developers.
3. Spring Initializer
H5N1 spider web application which tin create initial projection construction for you. This simplifies initial projection setup part.
4. Spring Actuator
This characteristic provides a lot of insights of a running Spring kicking application. For example, yous tin exercise Actuator to detect out which beans are created inwards Spring's application context together with which asking path are mapped to controllers.
5. Spring CLI
This is about other awesome characteristic of Spring Boot which actually takes Spring evolution into adjacent level. It allows yous to exercise Groovy for writing Spring kicking application which way a lot to a greater extent than concise code.
If yous are interested inwards learning to a greater extent than most these essential Spring Boot features together with so Dan Vega's Learn Spring Boot - Rapid Spring Application Development is a nifty house to start with.
3. What is auto-configuration inwards Spring boot? how does it help? Why Spring Boot is called opinionated?
There are a lot of questions inwards this i query itself, but let's start tackle auto-configuration. As explained inwards the previous example, it automatically configures a lot of things based upon what is nowadays inwards the classpath.
For example, it tin configure JdbcTemplate if its nowadays together with a DataSource edible bean are available inwards the classpath. It tin fifty-fifty exercise about basic spider web safety materials if Spring safety is nowadays inwards the classpath.
Btw, if yous are non familiar alongside saltation safety library together with so banking venture check out Spring Security Masterclass to acquire to a greater extent than most it. It's i of the most of import tools to secure modern-day Java application.
Anyway, the betoken is auto-configuration does a lot of piece of work for yous alongside abide by to configuring beans, controllers, see resolvers etc, so it helps a lot inwards creating a Java application.
Now, the big questions come, why it's considered opinionated? Well because it makes a judgment on its own. Sometimes it imports things which yous don't want, but don't worry, Spring Boot also provides ways to override auto-configuration settings.
It's also disabled yesteryear default together with yous demand to exercise either @SpringBootApplication or @EnableAutoConfiguration annotations on the Main shape to enable the auto-configuration feature. See Spring Boot Essentials for learning to a greater extent than most them.
4. What is starter dependency inwards Spring Boot? how does it help?
This query is to a greater extent than oft than non asked every bit a follow-up of the previous query every bit it's quite similar to auto-configuration together with many developers acquire confused betwixt both of them. As the shout out suggests, starter dependency bargain alongside dependency management.
After examining several Spring-based projects Spring guys notice that in that place is ever about laid of libraries which are used together e.g. Spring MVC alongside Jackson for creating RESTful spider web services. Since declaring a dependency inwards Maven's pom.xml is the pain, they combined many libraries into i based upon functionality together with created this starter package.
This non alone frees yous from declaring many dependencies but also fees yous from compatibility together with version mismatch issue. Spring Boot starter automatically pulls compatible version of other libraries so that yous tin exercise them without worrying most whatever compatibility issue.
5. What is the divergence betwixt @SpringBootApplication together with @EnableAutoConfiguration annotation?
Even though both are essential Spring Boot application together with used inwards the Main shape or Bootstrap shape in that place is a subtle divergence betwixt them. The @EnableAutoConfiguration is used to enable auto-configuration but @SpringBootApplication does a lot to a greater extent than than that.
It also combines @Configuration together with @ComponentScan annotations to enable Java-based configuration together with constituent scanning inwards your project.
The @SpringBootApplication is inwards fact combination of @Configuration, @ComponentScan together with @EnableAutoConfiguration annotations. You tin also banking venture check Spring Boot MasterClass to acquire to a greater extent than most this annotation together with it's used.
Also, this Spring Boot query was latterly asked to i of my friends inwards his final interview alongside a big Investment bank. He was interviewing for a front-office Java spider web application which uses Spring Boot inwards the back-end.
6. What is Spring Initializer? why should yous exercise it?
One of the hard things to start alongside a framework is initial setup, especially if yous are starting from scratch together with yous don't guide maintain a reference setup or project. Spring Initializer addresses this occupation inwards Spring Boot.
It's zero but a spider web application which helps yous to create initial Spring kicking projection construction together with provides Maven or Gradle gear upward file to gear upward your code.
I highly recommend to exercise it if yous are starting the start time. If yous desire about assistance, yous tin banking venture check out this Spring Boot MasterClass.
7. What is Spring Actuator? What are its advantages?
This is an interesting Spring Boot query together with mostly asked on Java roles which also has about back upward responsibility. Spring Actuator is about other cool Spring Boot characteristic which allows seeing within a running application.
Yes, yous read it correctly. It allows yous to run across within an application. Since Spring Boot is all most auto-configuration it makes debugging hard together with at about betoken inwards time, yous desire to know which beans are created inwards Spring's Application Context together with how Controllers are mapped. Spring Actuator provides all that information.
It provides several endpoints e.g. a REST endpoint to recollect this form of information over the web. It also provides a lot of insight together with metrics most application wellness e.g. CPU together with retentivity usage, number of threads etc.
It also comes alongside a remote rhythm out which yous tin exercise to securely buy the farm within Spring Boot application together with run about command to let out the same laid of data. You tin fifty-fifty exercise JMX to command this behaviour at runtime.
Btw, it's of import to secure your Spring Actuator endpoints because it exposes a lot of confidential information together with a potentially unsafe one-two. For example, yesteryear using /showdown endpoint yous tin kill a Spring Boot application.
But, don't worry. You tin exercise Spring Security to secure Spring Actuator endpoints. If yous are non familiar alongside Spring Security together with so yous tin banking venture check out Spring Security Certification Class to acquire most it.
8. What is Spring Boot CLI? What are its benefits?
Spring Boot CLI is a command describe interface which allows yous to create Spring-based Java application using Groovy. Since it's used Groovy, it allows yous to create Spring Boot application from the command describe without ceremony e.g. yous don't demand to define getter together with setter method, or access modifiers, render statements etc.
It's also really powerful together with tin auto-include a lot of library inwards Groovy's default packet if yous tumble out to exercise it.
For example, if yous exercise JdbcTempalte, it tin automatically charge that for you. If yous are interested inwards learning Spring Boot CLI, I recommend reading Spring Boot inwards Action book, about other masterpiece from Craig Walls afterward Spring inwards Action.
9. Where exercise yous define properties inwards Spring Boot application?
You tin define both application together with Spring kicking related properties into a file called application.properties. You tin create this file manually or yous tin exercise Spring Initializer to create this file, albeit empty.
You don't demand to exercise whatever special configuration to instruct Spring Boot charge this file. If it exists inwards classpath together with so Spring Boot automatically loads it together with configure itself together with application code according.
For example, yous tin exercise to define a belongings to modify the embedded server port inwards Spring Boot, which is also our adjacent question.
10. Can yous modify the port of Embedded Tomcat server inwards Spring boot? If Yes, How?
Yes, nosotros tin modify the port of Embedded Tomcat Server inwards Spring Boot yesteryear adding a belongings called server.port inwards the application.properties file.
As explained inwards the previous question, this belongings file is automatically loaded yesteryear Spring Boot together with tin survive used to configure both Spring Boot every bit good every bit application code.
If yous demand an example, yous tin run across this measuring yesteryear measuring tutorial to modify the port of Embedded Tomcat Server inwards Spring Boot. You tin farther see Learn Spring Boot inwards 100 Steps to acquire to a greater extent than most essential Spring Boot concepts together with how to exercise them inwards a existent project.
11. What is the divergence betwixt an embedded container together with a WAR?
The primary divergence betwixt an embedded container together with a WAR file is that yous tin Spring Boot application every bit a JAR from the command prompt without setting upward a spider web server. But to run a WAR file, yous demand to start laid upward a web server similar Tomcat which has Servlet container together with and so yous demand to deploy WAR there.
12. What embedded containers does Spring Boot support?
Spring Boot back upward 3 embedded containers: Tomcat, Jetty, together with Undertow. By default, it uses Tomcat every bit embedded containers but yous tin modify it to Jetty or Undertow.
13. What are about mutual Spring Boot annotations?
Some of the most mutual Spring Boot annotations are @EnableAutoConfiguration, @SpringBootApplication, @SpringBootConfiguration, together with @SpringBootTest.
The @EnableAutoConfiguration is used to enable auto-configuration on Spring Boot application, field @SpringBootApplication is used on the Main class to allow it to run a JAR file. @SpringBootTest is used to run unit of measurement attempt on Spring Boot environment.
14. Can yous shout out about mutual Spring Boot Starter POMs?
Some of the most mutual Spring Boot Start dependencies or POMs are spring-boot-starter, spring-boot-starter-web, spring-boot-starter-test. You tin exercise spring-boot-starter-web to enable Spring MVC inwards Spring Boot application.
15. Can yous command logging alongside Spring Boot? How?
Yes, nosotros tin command logging alongside Spring Boot yesteryear specifying log levels on application.properties file. Spring Boot loads this file when it exists inwards the classpath together with it tin survive used to configure both Spring Boot together with application code.
Spring Boot uses Commons Logging for all internal logging together with yous tin modify log levels yesteryear adding next lines inwards the application.properties file:
logging.level.org.springframework=DEBUG
logging.level.com.demo=INFO
That's all most about of the common Spring Boot Interview Questions for Java developers. If yous are preparing for Java evolution interview where Spring Boot is required every bit a science together with so yous should survive familiar alongside these interview questions. They non alone assist yous to exercise good inwards your interview but also encourage yous to acquire cardinal Spring Boot concepts inwards details to brand the best exercise of it.
Further Learning
Spring Framework Master Class - Beginner to Expert
Master Microservices alongside Spring Boot together with Spring Cloud
Master Hibernate together with JPA alongside Spring Boot inwards 100 Steps
Spring Boot Reference Guide
5 Free Spring Framework together with Spring Boot Courses
Spring Boot: Efficient Development, Configuration, together with Deployment
Thanks for reading this article so far. If yous similar these Spring Boot Interview Questions together with so delight portion alongside your friends together with colleagues. If yous guide maintain whatever feedback or dubiousness together with so delight drib a note.
Spring Boot aims to simplify Java evolution alongside Spring yesteryear removing major hurting points alongside abide by to configuration, dependency management together with ease of development. As Craig Walls position inwards Spring kicking inwards Action, It's likely the best matter happened to Java afterward JDK 1.5 release and the introduction of Spring Framework itself about fifteen years back.
It introduces a host of features e.g. starter dependency, auto-configuration, embedded server, Spring Boot CLI, Spring Actuator, Spring Initializer etc to accept the Java evolution alongside Spring to adjacent score together with that's why Spring Boot interview questions are becoming increasingly mutual inwards Java interviews.
In guild to answer Spring Boot query alongside confidence, yous non alone know what occupation Spring Boot solves but also in-depth cognition of about of its substance features similar auto-configuration together with starter dependencies. These 2 features eliminate a lot of configuration together with setup piece of work from Spring-based Java application.
Btw, If yous are non familiar alongside them I start propose yous buy the farm through a beginners shape similar Spring Boot Essentials to acquire up-to-speed. Once yous guide maintain skilful cognition of Spring Boot, yous tin endeavor these questions.
10 Spring Boot Interview Questions for Java Developers
Here is my listing of about of the most mutual Spring Boot Interview Questions from Java interviews. These questions embrace most of Spring Boot features e.g. auto-configuration, starter dependencies, Spring Actuator, Spring Initializer, Spring Boot CLI etc.They are also collected from Java interviews for both intermediate together with experienced Java developers e.g. from 2 to five years of experience.
1. What is Spring Boot? Why should yous exercise it?
Spring Boot is about other Java framework from Sring umbrella which aims to simplify the exercise of Spring Framework for Java development. It removes most of the hurting associated alongside dealing alongside Spring e.g. a lot of configuration together with dependencies together with a lot of manual setups.
Why should yous exercise it? Well, Spring Boot non alone provides a lot of convenience yesteryear auto-configuration a lot of things for yous but also improves the productivity because it lets yous focus alone on writing your describe of piece of work organisation logic.
For example, you don't demand to setup a Tomcat server to run your spider web application. You tin only write code together with run it every bit Java application because it comes alongside an embedded Tomcat server. You tin also create a JAR file or WAR file for deployment based on your convenience.
In short, in that place are many reasons to exercise Spring Boot. In fact, it's similar a shot the criterion way to prepare Java application alongside Spring framework.
2. What are about of import features of using Spring Boot?
This is a skilful subjective query together with used yesteryear the interviewer to guess the sense of a candidate alongside Spring Boot. Anyway, next are about of the of import features of Spring Boot framework:
1. Starter dependency
This characteristic aggregates mutual dependencies together. For example, if yous desire to prepare Spring MVC based RESTful services together with so instead of including Spring MVC JAR together with Jackson JAR file into classpath yous tin only specify spring-boot-web-starter together with it volition automatically download both those JAR files. Spring Boot comes alongside many such starter dependencies to ameliorate productivity.
2. Auto-Configuration
This is about other awesome features of Spring Boot which tin configure many things for you. For example, If yous are developing Spring spider web application together with Thymeleaf.jar is nowadays on the classpath together with so it tin automatically configure Thymeleaf template resolver, see resolver, together with other settings. H5N1 skilful cognition of auto-configuration is required to buy the farm an experienced Spring Boot developers.
3. Spring Initializer
H5N1 spider web application which tin create initial projection construction for you. This simplifies initial projection setup part.
4. Spring Actuator
This characteristic provides a lot of insights of a running Spring kicking application. For example, yous tin exercise Actuator to detect out which beans are created inwards Spring's application context together with which asking path are mapped to controllers.
5. Spring CLI
This is about other awesome characteristic of Spring Boot which actually takes Spring evolution into adjacent level. It allows yous to exercise Groovy for writing Spring kicking application which way a lot to a greater extent than concise code.
If yous are interested inwards learning to a greater extent than most these essential Spring Boot features together with so Dan Vega's Learn Spring Boot - Rapid Spring Application Development is a nifty house to start with.
3. What is auto-configuration inwards Spring boot? how does it help? Why Spring Boot is called opinionated?
There are a lot of questions inwards this i query itself, but let's start tackle auto-configuration. As explained inwards the previous example, it automatically configures a lot of things based upon what is nowadays inwards the classpath.
For example, it tin configure JdbcTemplate if its nowadays together with a DataSource edible bean are available inwards the classpath. It tin fifty-fifty exercise about basic spider web safety materials if Spring safety is nowadays inwards the classpath.
Btw, if yous are non familiar alongside saltation safety library together with so banking venture check out Spring Security Masterclass to acquire to a greater extent than most it. It's i of the most of import tools to secure modern-day Java application.
Anyway, the betoken is auto-configuration does a lot of piece of work for yous alongside abide by to configuring beans, controllers, see resolvers etc, so it helps a lot inwards creating a Java application.
Now, the big questions come, why it's considered opinionated? Well because it makes a judgment on its own. Sometimes it imports things which yous don't want, but don't worry, Spring Boot also provides ways to override auto-configuration settings.
It's also disabled yesteryear default together with yous demand to exercise either @SpringBootApplication or @EnableAutoConfiguration annotations on the Main shape to enable the auto-configuration feature. See Spring Boot Essentials for learning to a greater extent than most them.
4. What is starter dependency inwards Spring Boot? how does it help?
This query is to a greater extent than oft than non asked every bit a follow-up of the previous query every bit it's quite similar to auto-configuration together with many developers acquire confused betwixt both of them. As the shout out suggests, starter dependency bargain alongside dependency management.
After examining several Spring-based projects Spring guys notice that in that place is ever about laid of libraries which are used together e.g. Spring MVC alongside Jackson for creating RESTful spider web services. Since declaring a dependency inwards Maven's pom.xml is the pain, they combined many libraries into i based upon functionality together with created this starter package.
This non alone frees yous from declaring many dependencies but also fees yous from compatibility together with version mismatch issue. Spring Boot starter automatically pulls compatible version of other libraries so that yous tin exercise them without worrying most whatever compatibility issue.
5. What is the divergence betwixt @SpringBootApplication together with @EnableAutoConfiguration annotation?
Even though both are essential Spring Boot application together with used inwards the Main shape or Bootstrap shape in that place is a subtle divergence betwixt them. The @EnableAutoConfiguration is used to enable auto-configuration but @SpringBootApplication does a lot to a greater extent than than that.
It also combines @Configuration together with @ComponentScan annotations to enable Java-based configuration together with constituent scanning inwards your project.
The @SpringBootApplication is inwards fact combination of @Configuration, @ComponentScan together with @EnableAutoConfiguration annotations. You tin also banking venture check Spring Boot MasterClass to acquire to a greater extent than most this annotation together with it's used.
Also, this Spring Boot query was latterly asked to i of my friends inwards his final interview alongside a big Investment bank. He was interviewing for a front-office Java spider web application which uses Spring Boot inwards the back-end.
6. What is Spring Initializer? why should yous exercise it?
One of the hard things to start alongside a framework is initial setup, especially if yous are starting from scratch together with yous don't guide maintain a reference setup or project. Spring Initializer addresses this occupation inwards Spring Boot.
It's zero but a spider web application which helps yous to create initial Spring kicking projection construction together with provides Maven or Gradle gear upward file to gear upward your code.
I highly recommend to exercise it if yous are starting the start time. If yous desire about assistance, yous tin banking venture check out this Spring Boot MasterClass.
7. What is Spring Actuator? What are its advantages?
This is an interesting Spring Boot query together with mostly asked on Java roles which also has about back upward responsibility. Spring Actuator is about other cool Spring Boot characteristic which allows seeing within a running application.
Yes, yous read it correctly. It allows yous to run across within an application. Since Spring Boot is all most auto-configuration it makes debugging hard together with at about betoken inwards time, yous desire to know which beans are created inwards Spring's Application Context together with how Controllers are mapped. Spring Actuator provides all that information.
It provides several endpoints e.g. a REST endpoint to recollect this form of information over the web. It also provides a lot of insight together with metrics most application wellness e.g. CPU together with retentivity usage, number of threads etc.
It also comes alongside a remote rhythm out which yous tin exercise to securely buy the farm within Spring Boot application together with run about command to let out the same laid of data. You tin fifty-fifty exercise JMX to command this behaviour at runtime.
Btw, it's of import to secure your Spring Actuator endpoints because it exposes a lot of confidential information together with a potentially unsafe one-two. For example, yesteryear using /showdown endpoint yous tin kill a Spring Boot application.
But, don't worry. You tin exercise Spring Security to secure Spring Actuator endpoints. If yous are non familiar alongside Spring Security together with so yous tin banking venture check out Spring Security Certification Class to acquire most it.
8. What is Spring Boot CLI? What are its benefits?
Spring Boot CLI is a command describe interface which allows yous to create Spring-based Java application using Groovy. Since it's used Groovy, it allows yous to create Spring Boot application from the command describe without ceremony e.g. yous don't demand to define getter together with setter method, or access modifiers, render statements etc.
It's also really powerful together with tin auto-include a lot of library inwards Groovy's default packet if yous tumble out to exercise it.
For example, if yous exercise JdbcTempalte, it tin automatically charge that for you. If yous are interested inwards learning Spring Boot CLI, I recommend reading Spring Boot inwards Action book, about other masterpiece from Craig Walls afterward Spring inwards Action.
9. Where exercise yous define properties inwards Spring Boot application?
You tin define both application together with Spring kicking related properties into a file called application.properties. You tin create this file manually or yous tin exercise Spring Initializer to create this file, albeit empty.
You don't demand to exercise whatever special configuration to instruct Spring Boot charge this file. If it exists inwards classpath together with so Spring Boot automatically loads it together with configure itself together with application code according.
For example, yous tin exercise to define a belongings to modify the embedded server port inwards Spring Boot, which is also our adjacent question.
10. Can yous modify the port of Embedded Tomcat server inwards Spring boot? If Yes, How?
Yes, nosotros tin modify the port of Embedded Tomcat Server inwards Spring Boot yesteryear adding a belongings called server.port inwards the application.properties file.
As explained inwards the previous question, this belongings file is automatically loaded yesteryear Spring Boot together with tin survive used to configure both Spring Boot every bit good every bit application code.
If yous demand an example, yous tin run across this measuring yesteryear measuring tutorial to modify the port of Embedded Tomcat Server inwards Spring Boot. You tin farther see Learn Spring Boot inwards 100 Steps to acquire to a greater extent than most essential Spring Boot concepts together with how to exercise them inwards a existent project.
11. What is the divergence betwixt an embedded container together with a WAR?
The primary divergence betwixt an embedded container together with a WAR file is that yous tin Spring Boot application every bit a JAR from the command prompt without setting upward a spider web server. But to run a WAR file, yous demand to start laid upward a web server similar Tomcat which has Servlet container together with and so yous demand to deploy WAR there.
12. What embedded containers does Spring Boot support?
Spring Boot back upward 3 embedded containers: Tomcat, Jetty, together with Undertow. By default, it uses Tomcat every bit embedded containers but yous tin modify it to Jetty or Undertow.
13. What are about mutual Spring Boot annotations?
Some of the most mutual Spring Boot annotations are @EnableAutoConfiguration, @SpringBootApplication, @SpringBootConfiguration, together with @SpringBootTest.
The @EnableAutoConfiguration is used to enable auto-configuration on Spring Boot application, field @SpringBootApplication is used on the Main class to allow it to run a JAR file. @SpringBootTest is used to run unit of measurement attempt on Spring Boot environment.
14. Can yous shout out about mutual Spring Boot Starter POMs?
Some of the most mutual Spring Boot Start dependencies or POMs are spring-boot-starter, spring-boot-starter-web, spring-boot-starter-test. You tin exercise spring-boot-starter-web to enable Spring MVC inwards Spring Boot application.
15. Can yous command logging alongside Spring Boot? How?
Yes, nosotros tin command logging alongside Spring Boot yesteryear specifying log levels on application.properties file. Spring Boot loads this file when it exists inwards the classpath together with it tin survive used to configure both Spring Boot together with application code.
Spring Boot uses Commons Logging for all internal logging together with yous tin modify log levels yesteryear adding next lines inwards the application.properties file:
logging.level.org.springframework=DEBUG
logging.level.com.demo=INFO
That's all most about of the common Spring Boot Interview Questions for Java developers. If yous are preparing for Java evolution interview where Spring Boot is required every bit a science together with so yous should survive familiar alongside these interview questions. They non alone assist yous to exercise good inwards your interview but also encourage yous to acquire cardinal Spring Boot concepts inwards details to brand the best exercise of it.
Further Learning
Spring Framework Master Class - Beginner to Expert
Master Microservices alongside Spring Boot together with Spring Cloud
Master Hibernate together with JPA alongside Spring Boot inwards 100 Steps
Spring Boot Reference Guide
5 Free Spring Framework together with Spring Boot Courses
Spring Boot: Efficient Development, Configuration, together with Deployment
Thanks for reading this article so far. If yous similar these Spring Boot Interview Questions together with so delight portion alongside your friends together with colleagues. If yous guide maintain whatever feedback or dubiousness together with so delight drib a note.
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