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

In this video of code decode, Top Spring Boot Interview Questions and Answers for freshers and Experience candidates we have covered some top spring boot interview questions that has been asked over the years to canditates
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Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can "just run". Spring Boot helps you accelerate application development.
It looks at your classpath and at the beans you have configured, makes reasonable assumptions about what you are missing, and adds those items. With Spring Boot, you can focus more on business features and less on infrastructure.
For all Spring applications, you should start with the Spring Initializr. The Initializr offers a fast way to pull in all the dependencies you need for an application and does a lot of the setup for you.
Spring Boot Interview questions are usually tricky ones and we need to practice them before appearing for spring boot interviews.
A very common question asked is what is @SpringBootAnnotation
@SpringBootApplication is a convenience annotation that adds all of the following:
@Configuration: Tags the class as a source of bean definitions for the application context.
@EnableAutoConfiguration: Tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings. For example, if spring-web MVC is on the classpath, this annotation flags the application as a web application and activates key behaviors, such as setting up a DispatcherServlet.
@ComponentScan: Tells Spring to look for other components, configurations, and services in the com/example package, letting it find the controllers.
This video of spring boot interview question and answers contains Top basic important spring boot interview questions and answers with Live Demo
Spring Boot Interview Question and Answers Part 2: • Spring Boot Interview ...
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Most Asked Core Java Interview Questions and Answers : • Core Java frequently a...
Advance Java Interview Questions and Answers : • Advance Java Interview...
Java 8 Interview Questions and Answers : • Java 8 Interview Quest...
Hibernate Interview Questions and Answers : • Hibernate Interview Qu...
Spring Boot Interview Questions and Answers : • Advance Java Interview...
Angular Playlist : • Angular Course Introdu...
GIT : • GIT
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[@pawanyadav4199]

it was very helpful .. #Thank #You Theory + Code Demo !! Please make another part !!

[@CodeDecode]

M glad you find it helpful. Sure will make it soon

[@CodeDecode]

This is what you want : kzbin.info/www/bejne/iIuxh2yenpyUbtk Link to another part

[@braylonleon8257]

@Jaxson Kai instablaster ;)

[@positiveidea2784]

​@@CodeDecode⁰0000⁰000⁰00⁰

[@simrandeep7703]

You are a hope, a confidence booster. Thank you for all of your hard work that you put for making these videos. Really grateful!

[@CodeDecode]

Thanks a ton Simran 🙂👍

[@shashidharreddy2298]

For Remove embeded tomcat we can write in started-web dependency also alternate to properties file config

[@pragyaarun2993]

Awesome Tips! You are doing a great job! Completely understandable. Thanks a lot!

[@CodeDecode]

Thanks a ton Pragya

[@subhronilsensarma3790]

Amazingly explained. Even a person who has never heard of springboot he/she will be able to crack an interview

[@CodeDecode]

Thanks 👍

[@divyajain1278]

But what is the use if that person will get the project so without knowing the concept, no one can survive... Video is great 👍

[@yeshodaaradhwad2078]

Mam want this application code please send GitHub link

[@coolguy0719]

@@divyajain1278 How do you judge if they will know or not?

[@gsaravanan41]

19:31 What does the @SpringBootApplication annotation do internally? 25:51 Explain @RestController annotation in Spring Boot? 28:19 Difference between @RestController annotation and @Controller in Spring Boot? 31:40 What are the major differences between RequestMapping and GetMapping? 33:55 What is the use of profiles in Spring Boot?

[@CodeDecode]

Thanks Saravanan 🙂

[@SamPaulIsaac]

Insightful. Thanks Team!

[@rajeshkolhapure6739]

Thanks for such a nice explanation! Thumbs up!

[@CodeDecode]

You are welcome Rajesh......

[@pushkarmahajan9294]

I have learned a lot from your videos. Thankyou for posting these

[@CodeDecode]

Glad to be helpful Pushkar 🙂👍

[@RamRkRam]

Today 40% your videos helped to crack an interview with Tech Mahindra Hyderabad and got selected with 230% hike. From 3 LPA to 10.5 LPA for 3 yrs exp. THANK YOU 👍👍👍

[@CodeDecode]

Congratulations Ram🎊🎉🎉. Well deserved 🎊🎊. Keep learning keep growing Man 👍👍🙂🙂

[@renugupta8792]

This is really really helpful.. you have explained each topic in a very simple way . Thanks a lot !!

[@CodeDecode]

Thank you.......

[@vidhijain4554]

Thanks for this content at one place. This will really help us in interviews.

[@CodeDecode]

You're welcome

[@senthilmurugangsm]

Great and clear explanation in a short time. Easily everyone can understand. It's really helpful. Thanks.

[@CodeDecode]

Thanks 🙂👍👍

[@lohithngowda8729]

Thanking you from great heights for these kind of Bootstrap videos.

[@CodeDecode]

You are Welcome....

[@91vasanth]

Wonderful videos!! It would be nice to have a video on MVC architecture using spring boot. Maybe an example project. Thanks. Loved your explanation style and video making skill for Java.

[@CodeDecode]

Sure we will upload it soon 👍🙂

[@aishwaryashukla4356]

I liked this "I'm not talking about Software Developers but normal human beings" 😂😂😂😂😂😂

[@CodeDecode]

😝

[@anonymous_devil3730]

We are not normal humans 💪😎

[@saybyetosumit]

😇

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We are beyond humans 🤣🤣🤣

[@parthmehrotra25]

AMAZING VIDEO! THANKS ALOT!

[@CodeDecode]

M glad you liked it 👍

[@mittapalliniveditha416]

Very clearly explained !! Thank you ..It's really useful

[@CodeDecode]

M glad you found this helpful 👍

[@pritishinde350]

I have been watching all your videos since I'm preparing for interview. I must say, You're videos are very helpful. Please make videos on Spring framework interview questions with example explaination.

[@CodeDecode]

Thanks for the nice words. Will create that video soon 👍

[@priyakoli5572]

Thank you so much for this video! Really helpful and explained with real time examples and the exact use of the features. God Bless You!

[@CodeDecode]

Thanks for the nice words Priya 👍

[@srijagupta2448]

You are simply awesome! Thank you for making such a great video!! Understood each bit of it very clearly 🤗

[@CodeDecode]

Thanks Srija 🙂👍

[@RishiRaj-ex9wb]

Your videos are awesome, awesome and awesome!!!

[@CodeDecode]

Thanks rishi

[@ashigdata]

Good content .. only thing that made me laugh or smile was when you said I am talking about normal human being and not software developer.. 😂😂😂😂😂

[@sagarpanda7524]

All your videos are excellent. Best revision I would say. By any chance if you can share the ppts please? Can you please make more videos on microservices, I have see 3, parts of your microservices, need more to cover rest of the concepts. Also videos on kakfa, docker & kubernetes will also be much valued for experienced guys. Thanks.

[@Abhishek-cq9vd]

I'm learning spring boot and trying to switch towords spring boot and rest APIs and here comes what I wanted... Crazily super. Thanks a lot

[@CodeDecode]

Thanks Abhishek 🙂👍

[@amalas4004]

Wow! Well explained. Thank u so much.

[@CodeDecode]

you are welcome....

[@debapratimshyam149]

This is so usefull a short and quick revision of most important concepts...Plus almost all of these questions were asked to me one or the other interview... Thanks a lot👍👍

[@CodeDecode]

Hope you reach to your dream job soon 👍👍

[@vikasgc3456]

Thanks! This was helpful. Pls create second part as well .

[@CodeDecode]

Sure will upload soon

[@sikhilsingh1321]

Very helpful, need more videos like this.

[@CodeDecode]

Sure will upload soon

[@dimpullprashanthi9033]

It's really very helpful with basic spring boot knowledge I am able to understand all the concepts so clearly. Thanks for your efforts keep going 🎉

[@CodeDecode]

Thanks dimpull 🙃🙃👍.

[@kazaasekhar]

I really love the way you explained the concepts, great way of demonistration each and every point. this is the best I ever till now, thank you soo much dear madam.

[@CodeDecode]

Thanks Sekhar, Keep learning, keep growing Man 👍

[@prajk23]

I don't how much should I thank you🙌🏻😁 Your channel is the best one when comes to prepare for interview at last moment🤩 Keep up the same quality🙌🏻

[@CodeDecode]

Thanks a lot 👍👍🙂🙂. Sure👍

[@kshitizkamaljain8233]

Your videos are so helpful. They are asking the same question.

[@CodeDecode]

Been there 😃 I understand 👍

[@adeda_2795]

Very nice video. You explained the importance of spring boot with regards to the RAD which is a modified Waterfall model as you said. Now that most companies use Agile, can you explain the importance in relation to agile also ?

[@vijaylagdive644]

Nice video.. mentioning difference between spring and spring boot annotations. Cleating concepts with direct coding example.

[@sachindesale1124]

Am very surprised that I Little span of time you have cleared all basic and important question easily. Thank you so much. 🙏🙏

[@CodeDecode]

Thanks Sachin 🙂👍

[@gokulaher2476]

Yet another very good explanation Requesting you to pl. make one video on 1)Spring CORE 2) Spring MVC 3) Spring Annotations 4) Spring AOP 5) Spring JDBCTemplate 6) Spring Hibernate integration 7) and some advance spring framework interview questions. And requesting you to pl.upload PDF of question answer of all Java related technologies and framework that you have covered so far Thanka a lot for such videos You are doing great job 👍👍🙏🙏

[@CodeDecode]

Yes all these stuff are remaining. We will upload them soon 👍👍🙂🙂

[@hocinekheddadji826]

it was very helpful thank youuuu :D

[@CodeDecode]

Thanks Hocine

[@VikashKumar-hf3sc]

Really a great video for revision. Thanks a lot

[@CodeDecode]

M glad you found it helpful

[@ashishsingh8222]

very helpfull want more this type of session covered all type of information thank you very much

[@CodeDecode]

sure we will create more videos like this

[@ashishsingh8222]

Thank you Mam for this Your content is awesome . Clear all my concept. Thank you @@CodeDecode

[@tejasdeore8340]

Precious content and very well explained . Loving it . Watched for 9 minutes and I am being forced to write down comment. Gonna check each and every playlist. ✨🙏

[@CodeDecode]

Thanks Tejas 🙂👍

[@shubhamgoyal1968]

Very nice explanation. Thank you!

[@CodeDecode]

You are welcome!

[@rupaliwakudkar8625]

well done, i really appreciate your work.Its very easy to understand. Thank u so much:) can you please make video on microservices.

[@CodeDecode]

Sure we will create video on microservice soon.....

[@dtomar55]

Well explained the key points. Thanks for sharing

[@CodeDecode]

👍👍

[@gauravdewalkar4830]

Amazing !🔥

[@CodeDecode]

Thanks....

[@RajiRaji-nc8xm]

I like so much way of your teaching

[@LearnWithAmi]

Best explanation...after seeing ton of videos....got this.....thanks 🙏☺️☺️

[@CodeDecode]

Thanx a lot🙂🙂

[@ManishPushkarVideos]

The amount of information you have shared in 1video is really awesome and I can say that based on my experience as Software Engineer. These videos are really good for Interviews. I am watching most of your videos these days as I am preparing for my Interviews. Keep posting.

[@CodeDecode]

Thanks :) I too am in this industry and faced many such interviews. I know the importance of basic that's why such videos 👍 n I m grateful to have viewers like you 🙃. Keep studing and you will be able to reach all the heights in your career. All the best 👍

[@skarteek]

Simple super explanation. It's really helping to understand the concept easily. ThankQ #CodeDecode.

[@CodeDecode]

Thanks Karteek 🙂🙂👍👍

[@sudhiradlakha5988]

This is the best explanation I ever had till date. Very Impressive 👏. Keep it up 👍

[@CodeDecode]

Thanks for the nice words sudhir

[@anushapeddi3215]

OMG ur explanation is crystal clear, ur my Java Guru. God Bless You mammm

[@CodeDecode]

❤️❤️

[@rohitdoshi7506]

I have watched whole series for spring boot and got selected Thanks a Lot!!

[@CodeDecode]

That's a great news Rohit. Congratulations 🎊🎊🎉🎉. Keep rocking man 👍👍

[@vamshikrishnagolla6506]

@Rohit do you have any experience??

[@sathyajagadeeswaran601]

Thank you sooooooooo much... for this video... Web and rest api definition is too good 👍

[@CodeDecode]

Thanks for the nice words

[@dipabhow4630]

Thanks to your video... I have got one question with exclusion tag in my interview today..... Thanks a lot... Good job .... keep going... god bless

[@CodeDecode]

All the best for your upcoming interviews Dipa. Keep learning keep shining🌟👏

[@shantanukulkarni54]

Thank you ! so well explained video ....

[@CodeDecode]

Thanks 👍👍

[@m2k2n2d]

you are an awesome teacher!

[@CodeDecode]

Thanks Mukund

[@sukrit_shukla]

Best video for refreshing the concepts.

[@CodeDecode]

Thanks sukrit 👍

[@gokulaher2476]

You are a "Java champion" Not just java but all the java related technologies like spring hibernate etc You are really doing a great job. Requesting you Pl. Uploade other java related technologies interview questions and answers that you think you have missed and they are important Special Thanks once again for this interview questions and answers series 🙏👍

[@CodeDecode]

Thanks Gokul 🙂. We are still in learning phase🙂🙂. You guys help us in understanding priorities n our day to day job in IT world helps us to cater these knowledge🙂🙂. Thanks for the nice world Gokul. It means a lot 🙏🙏

[@gokulaher2476]

@@CodeDecode I have one suggestion , It would be really good if all the interview question which are mostly asked in real MNC interviews are subject wise compiled together and answers for all those interview questions (short,simple and easy to understand not to lengthy with graphics diagrams where ever required for e.g. you have explained how the garbage collection happens or done by JVM) and also with program/code snippet where ever required and if you organised it in well structured manner and create a "Book" author by you and give some nice title Say for e.g. "Career with Java" And bring in to market belive me it would be of great successfull book It should contain only java and related technologies which are like must for a "Java full stack developer" Let's devide the java and technologies in to 3 tiers 1) UI or Front end/ presentation tier 2) Middle tier/ Business logic tier 3) Back end or database tier Some of the technologies which I know required for a full stack developer are as follows 1) UI or Front end/ presentation tier HTML,CSS,JSP,JavaScript, JQuery, Ajax. 2) Middle tier/ Business logic tier Core-java (up to java 15/16), Advance java JDBC etc servlet-JSP, Struts framework Struts1.3/Struts 2.x Spring framework CORE,MVC,AOP,ORM,Annotatios, JDBCTemplate,Spring-Hibernate integration,Spring Boot, Spring Cloud 3) Back end or database tier Hibernate interview questions RDBMS, SQL and PL-SQL Web services REST-Web Services SOAP Web Services Design Patterns 7-8 most commonly used Some VCS interview questions and answers SVN and GIT etc "Career with Java" (mostly asked in real MNC interviews) like for e.g. top 10 or top 20 questions including advance topics with program/code snippet The book should be precisely composed like if around 20 technologies I have mentioned If top 10 QAs covered the Total 200 QAs If top 20 QAs are covered then Total 400 question answers Some of the technologies may not required 20QA Like SVN GIT And some may required more than 20QAs like CORE JAVA and spring framework. Total book size should be within 100 to 150 pages And price also should not be very high say for e.g for 100 pages book rs 100 and if pages are more then should increase the price accordingly Let's say For 150 Pages book Price is Rs150 And if 1million copies are sold 10,00,000X150 15,00,00,000 will be total sale and Publisher can give handsome return out of it around 20℅ I think minimum It's just a suggestion but can be doable think about it.

[@sushmakurdekar8370]

Thank you for the video.

[@CodeDecode]

you're welcome

[@shivakumaras1950]

Thank you so much for this wonderful content, please upload such informative videos more and more...

[@CodeDecode]

sure shivakumara videos are lined up you will see it soon...

[@satyam3608]

Really helpful videos, Thanks a lot for such a thorough explaination🙂

[@CodeDecode]

Thanks Satyam 🙂👍

[@sanjeevkumarsah4047]

Very simple and informative video. Thanks a lot.

[@CodeDecode]

Thanks Sanjeev 🙂👍

[@shubhisharma3790]

Excellent explanation with the demo. Your videos make it so easy to understand the concept with practical examples

[@CodeDecode]

Thanks shubhi for the nice words

[@akankshasinha3352]

Yaarrr kya shi practical knowledge bata k explain karteh ho… thanksss a lotttttt .. uffffff may god bless you❤❤❤❤❤❤❤❤❤❤

[@CodeDecode]

Thanks a lot Akanksha ❤❤❤❤. Acha laga dekhke that u liked it 😍🙂🙂

[@shubhamgajeshwar5805]

Thanks this content helping me a lot. Please release the next part of Spring Boot Interview questions and answers.

[@CodeDecode]

Sure Shubham. We will create other parts soon 👍🙂

[@raghavanaliassaravananm1546]

You do a great job of posting a good video and responding to a comment. On top of it, you even follow up with the person for your clarifications. Great Keep going. God bless.

[@CodeDecode]

Thanks for motivating. It means a lot Raghavan 👍

[@archie5766]

you got great teaching and explanation skills.Please upload full videos on spring boot.Thank you

[@CodeDecode]

Thanks a ton Archana. We will surely upload more such videos

[@sreeram543]

Best video ever seen prove me if I am wrong.. last week thinking where to start .i saw one video last week one lady horrible and decided not to watch .. when I start your video thought to skip after hearing lady voice .dont take me wrong and I respect women.but when I started and watching video omg u r simply super .. and decided to all of your videos .. my cousin just passed beech and I forwarded to her to go through your videos... keep going ...once again thank you as you gave me hope that where to start😄

[@CodeDecode]

This is funny 🤣😂. Thanks for not judging me by a female voice. Your long post is a motivation. Thanks for writing back. Much appreciated. But yes, had a great laugh after reading this. Thanks 😂

[@sreeram543]

@@CodeDecode i saw ur latest video first and was impressed .. may be if i see ur first video first then i might be same impression and might have missed ur wonderful sessions ..😜🤪

[@viswanathchintala8215]

Wow what an explination👌🏻👌🏻. After watching your videos I have got more clarity on spring. Keep rocking

[@CodeDecode]

Thanks Vishwanath 🙂👍

[@shankarpatilsp]

Thank you ma'am!!

[@CodeDecode]

👍👍

[@ratishbarman]

Thanks a lot your videos are too much helpful

[@CodeDecode]

M glad you liked it

[@avinashm3412]

Big salute to you for creating wonderful content 🙏🙏🙏

[@CodeDecode]

Thanks for the nice words avinash

[@mohitbang5556]

Damn good video... Keep it up and make more nd more videos like this...

[@CodeDecode]

Thanks. Sure will keep posting 👍

[@OneEthio]

Thank you very much!!! Can you please post a video about spring interview questions

[@CodeDecode]

Sure 👍👍we will upload spring interview questions soon 👍👍

[@nihith7]

great explanation with clear examples. keep rocking

[@CodeDecode]

Thank you....

[@vivekkumar-iy7zk]

thanks,this video helps me alot

[@CodeDecode]

M glad. Thanks for the nice words 👍

[@dineshreddy4369]

Addicted to this...👍👍

[@ravindrad4849]

Its help full for me , Thanks for your effort

[@CodeDecode]

Thanks for writing back to us. 🙏👍

[@java.programming]

Pretty Helpful !!! Could you please make some more advanced questions

[@CodeDecode]

Sure 👍

[@praveentripathi1621]

Amazing explanation please create more videos on Spring Profile Configuration and Multiple Data Source Configuration in spring boot

[@CodeDecode]

Sure will do that soon

[@srikarsowbhagya683]

Thankyou Madam for your clear explanation

[@CodeDecode]

Thanks Srikar 👍👍

[@sps3608]

Great job, very well explained 👌

[@CodeDecode]

Thanks

[@lekiaki7384]

Awsome explanation..hats off for your efforts..

[@CodeDecode]

Thanks

[@narendra_ingle]

it's very helpful to prepare interview questions for experience developer also . can you please covered manual classpath for application properties

[@reshmaantony7836]

This was very helpful.Thanks alot

[@CodeDecode]

Thanks Reshma 👍👍

[@yogendrakumaryadav1612]

Awesome and very helpful explanations

[@CodeDecode]

Thanks. M glad you find it helpful

[@shruthigutti3082]

Very nice clear explanation, Thanks a lot

[@CodeDecode]

Thanks 👍

[@abhiranjanpandey3098]

simply awesome

[@CodeDecode]

Thanks Abhiranjan 🙂🙂👍👍

[@venumadahvk8833]

Thank you so much .. it's good explanation and clear..

[@CodeDecode]

Thanks Venu 👍🙂

[@aparashar21]

Very Nicely and Clearly Explained. SUBSCRIBED. Please make microservices videos. Thanks for sharing your knowledge with us

[@CodeDecode]

Sure. It's in queue. We will upload that soon. Thanks for the suggestion, 👍👍

[@vikkys4456]

Surprisingly Amazing explanation. Thanks a lot!! One question I had was where can I see the application context class in spring boot?

[@CodeDecode]

Ctrl + shift + t in eclispe or sts and write applicationContext, you will be able to see it there

[@insaikishoreseelamsetty3066]

31:29 @Controller vs @RestController well illustrated. Appreciate it

[@CodeDecode]

Thanks😊😊👍

[@kasperamkumar5489]

Such a great and clear explanation.fabulous ... 👌👌👌. Subscribed to your channel after your explanation. This video is sufficient to know about complete spring boot. If possible you make a videos on relationship on hibernate on springboot entity class and how we use spring security with jwt tokens and Authorization etc.. Keep posting all the best 👍👍

[@CodeDecode]

Thanks. Sure, nice topics, will surely create videos on them 👍🙂

[@barshabaishakhibiswal6978]

Thank you so much mam. All these informations are really helpful. Keep posting the videos 😊

[@CodeDecode]

Thanks Barsha 👍🙂

[@yogeshrathore1423]

its very helpful , and nicely explain each topic which are very important for interview perspective Thanks..

[@CodeDecode]

Thanks Yogesh. Sure we will create more such videos👍👍

[@StudyUseonlyPlease.-lq9tv]

Thank you mam. In the technical round I got the same questions.

[@CodeDecode]

You are welcome

[@saurabhsingh88]

Thank you so much for this video. I have a question on last video like how system will know that we write spring.active.profies=prod then it will take from the -prod file name what if I give the property file name as "prodd" or something else

[@CodeDecode]

System reads your application.properties file. While reading when it finds that you have overriden spring.active.profiles property , then it will know that you have different configurations for different environments. And what ever parameters you pass as a value to this property say xyz, it will then search for application-xyz.property file in your class path. If it finds that, it will load all required properties from there. If no such file or present in your path then it will give you error.

[@jaydeeppatel1807]

Nice video series ... thanks ... Software Engineers != Normal Humans :)

[@CodeDecode]

🤓

[@kshitizkamaljain8233]

Thanks a lot

[@CodeDecode]

👍

[@srishtibisht8659]

Your videos are amazing...

[@CodeDecode]

Thanks Srishti 🙂👍