Spring ultimate basics: What are Spring Beans and what is the Spring Container?

Before you start with Spring it is a must have that you understand what Spring beans are. In my opinion this is explained in a too complicated way in most resources out there. I really aim to make it as simple as possible.
In short:
Spring bean: an instance of a class managed by the Spring Container
Spring (IoC) Container: the core part of Spring that is responsible for managing all the beans
In this video I will explain that (after a general introduction to Spring) and I will show you a code demo to show you how and what Spring beans get instantiated.

[@xanhx]

Every other spring tutorials are like "lets just build something", not how it works and why it works. Im glad i found something i was looking for. Thank you!

[@BrightBoost]

Really appreciate you letting me know that. Good luck with your Spring journey!

[@optimisticenigma283]

Man, I so wish you made an entire playlist explaining Spring, SpringBoot & Spring MVC, or maybe separate playlists for each tutorial! Genuinely one of the best explanation videos I've found on the topic!

[@BrightBoost]

This is very encouraging, thank you! Im working on it at this very moment 🥰

[@DevoteeInCorporate]

@@BrightBoost when will you upload it?

[@kshitijofthejune]

Only java developer who is not bald

[@nayacodes]

lmaooo

[@farawayskies]

Please please please keep this level of "explaining for dummies" and keep making Spring Boot tutorials. I'd love to learn from you more about other very common Spring Boot annotations as well as some very simple examples explained regarding securing a rest api, connecting databases, perhaps cover a very simple example of jwt token exchange with spring boot...learning from you will be most helpful.

[@BrightBoost]

Thanks for the great suggestions Matt! I'll be expanding the Spring videos early 2022 :)

[@palashbawankar8218]

+1

[@BrightBoost]

@@palashbawankar8218 Currently editing a video on Spring Boot APIs for ultimate beginners :) Coming soon!

[@worldwide6626]

@@BrightBoost and authentication and authorization in Spring boot too please

[@charlesmcknight3612]

I always used to wonder why instances are called beans...now i finally know. Thanks.

[@SIStefanov]

I wish you had continued, or for you to continue, making Spring tutorials. This one is, I believe, the best on the platform on the topic of Spring Boot and beans. If you have the time and you still want to do it ofc, you will quickly consistently rank 100k to 200k views a video. It is perhaps less than if you were tackling OOP or basic topics, as Spring is more of an enterprise tech and so has a relatively smaller size audience, but the big thing is that there is a real lack of quality Spring video tutorials. You will quickly reap in the benefits! Again, thank you for the great video! Well done!

[@BrightBoost]

Thank you so much for your suggestion and even the calculation of the benefits. I really intend to create more after I'm done with my busy period with clients and deliverables :) The KZbin audience is so friendly, really enjoy the feedback I'm getting here.

[@xgalarion8659]

I LOVE YOU. Finally someone explains spring (Which i really hate but have to learn cause it's overengineered garbagio to me), WITHOUT trying to 'sell' it to me.

[@BrightBoost]

Aw thank you! Very happy to hear you like the explanation 💛💛

[@avatarman9073]

This is probably the best programming tutorial I've ever seen in my life. You go into detail and explain everything which is how I like to learn. Please make more videos.

[@BrightBoost]

I'm very flattered😊 yes I will be making a series on Spring when I'm having some more time. A bit too consumed by classroom teaching at the moment.

[@BrightBoost]

@Duran S. And I'll never admit it...

[@avatarman9073]

😂

[@paulkeller666]

It's good to hear women's voices in the java world, good job and keep it up!

[@Abhinav-tf3ci]

Please make more such tutorials on spring , your explanation are just phenomenal.

[@BrightBoost]

Thank you! Will do🥰

[@zoro9878]

Your explanation is really good. I hope you continue this series so that beginners like me can understand spring easily. Thanks

[@hi_huytran]

Been trying to learn the basics of Spring and Spring boot for days and was so confused. This video has been the most helpful educational material so far. Thank you so much for making a hard concept (at least to me) simple and easy to understand!

[@BrightBoost]

Lovely to hear it helps you, thanks a lot for letting me know. Reviews like these make my day 🥰

[@StyleBIGMAC]

The best tutorial on spring beans and container by far.

[@sergio058-pb6hf]

I have to say this is the best video that I found about these topics. Thank you!!

[@ahmetbcakici]

Your great explanation makes it really easy to understand. Thanks!

[@BrightBoost]

Happy to hear that, thanks for letting me know!

[@maxpowell3528]

Shoutouts to my girl Maaike for explaining this groundwork so clearly !!

[@mohammadtorab9429]

honestly, haven't seen such a good explanation before. have no words to appreciate this tutorial!!!

[@BrightBoost]

Thank you for your kind words! 🥰

[@teachyourselfcs]

Finally someone that goes in depth! Awesome video thank you!

[@BrightBoost]

Thank you for letting me know. Good luck with your Spring journey 😊

[@navjeethkumar3390]

Best video for understanding Spring Bean. Like i have been digging out the internet from past 1 year to understand what a spring bean is. but now finally i have understood it with help of u. Cheers to that😍

[@BrightBoost]

Sorry to hear that, sounds familiar though.. I had the same until it finally clicked. That's why i recorded this one😊 glad it helped you!

[@shivarammuthukumaraswamy7164]

This is the best video i have seen on spring,spring boot,DI and IOC. Please continue making these tutorials. I have a doubt tho, why are we getting an error even though we are never instantiating the customer class..Thank you.

[@BrightBoost]

Because Spring does. It's a bean, and it cannot find a bean it depends on.

[@jmoldi]

Of the tens of videos I have seen, and the tens of sites I have searched the answer to this, this is by far the best explanation of beans by far

[@omartammam5168]

I've been searching the internet for DAYS trying to learn these stuff and you honestly saved me. THANK YOU AND KEEP IT UP!

[@BrightBoost]

Very happy I could help! Let me know if you have any doubts still 😊

[@violetavss1719]

What sources did you find for stuff like that and spring boot stuff?

[@omartammam5168]

@@violetavss1719 Resources are scarce for spring boot stuff. You'll only find videos which walks you through building a full project ( which is helpful in some cases). But to get to know how the framework operates, I'd suggest reading through what you want to learn in the Spring documentation. Start with the Spring core docs and go on from there to what you find interesting.

[@Miketar2424]

This is awsome. I never thought about listing all the bean definitions on boot. I'm a developer, and brushing up on Spring for some projects soon to be working on. Thanks.

[@BrightBoost]

Great to hear this! Good luck with you upcoming Spring projects :)

[@mohammadikram687]

Totally even for me that was like WOW 🤩 moment. I never thought like this, this goes to show that you are teaching even core concepts and that too in such a fluent and easy way.

[@ashkankipati]

please make a series on spring and spring boot for beginners, love your explainaiton and clarity and the quality of your slides

[@BrightBoost]

Thank you! I really want to, hopefully I'll manage to do so this year. Currently making some content for Udemy, Pluralsight, Linkedin Learning and writing a book with Packt 😅 But I really really want to continue here as well.

[@kacmed]

easily explained, walked through ... i really liked this video, very good

[@healthiswealth9520]

Please continue making spring boot videos. This video was really good for understand how spring boot eorks internally.

[@BrightBoost]

I will! And thank you 😊😊

[@karankanojiya7672]

This is far best explanation I have seen for Spring Beans ! Respect++!

[@BrightBoost]

Thanks, Karan! Happy to hear that 😀

[@shreyashachoudhary480]

One of the most clear and crisp explanation I've ever seen! Superb

[@thane-j]

I am learning Spring boot now, and the whole thing of IOC and injection is making me crazy Your video is very helpful and the way you teach is simple and direct. Thanks Maaike!

[@4716viktor]

This is gold, jajaj the best explanation in the internet.

[@BrightBoost]

Thank you🥰

[@June25th87]

I'm new to Spring and I've been searching for "what is spring bean" and most answers on the internet just make me have more confuse, even in my native language, until I found this video. Thank you!

[@BrightBoost]

So happy to hear it helped you! Good luck on your Spring journey :)

[@МаксимЯрема-е8щ]

Thanks a lot, this video helped me understand many things, please continue this tutorials

[@sandy_jose9828]

I have been searching for a video that gives me exactly this! Its on point. Thank you

[@BrightBoost]

Happy to hear it helps you! Good luck learning Spring 🍃

[@mikedelta658]

One of the best tutor.

[@BrightBoost]

Thank you! 😊

[@JaiBharat777]

Thanks for making this video. I am a .NET developer, good overview and nice intro.

[@michaelhashimoto1650]

This is genius! I love that you show in the code what is happening! Thank you so much!

[@DL190695]

Can you please make more videos on Spring/Springboot explaining autowiring etc etc? It's such a delight hearing a woman's voice explain this in the most straightforward/simplest way to understand!

[@theunbeatableme]

The code walk through is really really helpful. Thank you for this video. The part where you printed the applicationConext beans! 👍🏼🙏🏻

[@Truxygg]

Hey Maaike, this is the best video which explains the Spring jargon. There is a real lack of good Spring Boot tutorials and you can easily fill up the space. Please make more videos, you have a lot of knowledge (as can be seen in the way you can explain each and every thing) and you should share it with novices like me. 🙂

[@BrightBoost]

Thank you for that huge compliment! I'm partnering with a really cool company to make some more tutorials that will also be published on this KZbin channel. Starting content creation in February!

[@Truxygg]

@@BrightBoost Looking forward to the tutorials 🙌

[@shehanbartholomeusz7511]

Thank you!!! I didn't understand Bean for a loooong time.. but not anymore thanks to you... THANK UUUUUUU

[@BrightBoost]

Love to hear that Shenan, you're very welcome!

[@ronnyh4227]

Such an amazing tutorial! Loved the way you kept rerunning the program to show us the effect of each change. Also really loved the combination of giving us a great intro to Spring in addition to examples. Must watch! Can't wait for future content (no pressure, we just love your videos!). Thank you!!!

[@BrightBoost]

Thank you so much for the encouragement! Good luck with your spring journey ❤️

[@LakhveerBawa-u1l]

Thanks a lot, I did not come to learn spring or java here but to learn IOC and you explained it clearly and thoroughly. Thank you so much

[@AlfredoRuedaUnsain]

Thank you very much Maaike. Your explanation of how the Spring Framework works internally is brilliant. Your exceptional and inspiring communication skills make complex concepts much easier to understand. Thanks again for sharing your knowledge, enthusiasm, and positive energy! Great instructor!

[@AhamedIfham]

Well explained. Helped me understand what is really happening inside.

[@BrightBoost]

Appreciate your message, thanks for letting me know 🥰

[@AhamedIfham]

@@BrightBoost Please create more stuff. I can't wait for more indepth videos

[@BrightBoost]

@@AhamedIfham I will!

[@edavar6265]

This video saved my life. I am currently doing a bootcamp and I really feel left behind by all of these fancy concepts but this cleared out a lot of things. Thanks a lot!!

[@BrightBoost]

Glad I could help! Good luck with your bootcamp.💪😊

[@siyu07]

I was having problem in @bean annotation and KZbin recommended this video. It was worth watching. Keep making video on Spring. Your explanation is crystal clear. Thank you

[@jayim243]

Im trying to learn spring boot and ive watched a few tutorials so far, but they never go over the very basics of spring boot as well as you have. I love the way you talk about these concepts and explain how spring boot works as if we were having a conversation. It really helps with understanding and confidence moving forward with other YT spring boot tutorials. Love ur voice too btw. Pls make more! :)

[@BrightBoost]

Love to hear that! Good luck with your spring boot journey. And thanks for the encouragement ☺️

[@dnyaneshtathode5511]

Oh my goodness!! Referred to multiple resources to understand what exactly the spring bean and IoC container is, none was clear but vague. This one Maaike, I must say, is the best explanation on the internet. I always wondered if we can ACTUALLY see the beans from Application Context/ IoC container, and thanks to you, I was finally able to reckon it clearly.

[@BrightBoost]

That's a huge compliment. Thank you 😊Makes my day to hear this helped you :) All the best of luck with your Spring journey!

[@AndreasMuller-ji4jo]

Thank you so much. Your explanation is exactly what I was looking for.

[@hakeemit]

Really a Magic Video. Thank you for explaining the basic mechanism of spring beans. Subscribed to your channel.

[@BrightBoost]

Thank you😊

[@MichaelAngeloZara]

I'm really thankful that i could found this tutorial to make me fully understand what beans are. Thank you very much Maaike.

[@nighma]

Good job! I always try to find this king of explanation for my youngest colleague. Please continue it, I'll refer your videos ;)

[@mohamedaminnaimi2770]

Thank you for this very clear and precise explanation. It was very helpful.

[@sohammukherjee59]

Excellent presentation. I was so much confused regarding these annotations and their purpose including IOC and DI. Now, I feel relaxed. Thanks aplenty.

[@king0s]

Lots of 🙏 and ❤ from Chennai 🇮🇳

[@BrightBoost]

Lots of love and happy coding back from the Netherlands!

[@nayutan2640]

Thank you for the explanation! I don't know why this has less likes..

[@BrightBoost]

Happy you liked it!

[@smarkxyz122]

That was a great video! I listen to many on the topic but this was clearly the best.

[@Mkrabs]

Maaike run the bean as many times as you need! Your explanations help a lot :)

[@BrightBoost]

Haha thank you😊

[@jazq3]

I think this was the best and to-the-point explanation I've found. Thank you for uploading such a great video.

[@BrightBoost]

It's so nice to hear that! Thanks for letting me know :)

[@Artificial_Intelligence_AI]

I'm starting to program with JAVA & Springboot and I was looking for an easy explanation before going further into the technical details (in comparison with Node or Python frameworks, Spring is harder with all the annotations etc).This video is just perfect to fill some gaps, you made a great job by simplifying all these hard concepts. I hope you keep doing this because there is no much content like yours :D

[@BrightBoost]

Good luck with your Java & Spring journey! And I'm going to try my best to be adding some soon.

[@jayTzanTG15]

Good job Maaike , kind and respectful presentation

[@effy1219]

this is the clearest explanation i've ever seen!

[@BrightBoost]

Thank you 😊

[@ougnou10]

Love the way you explain so simple and straight to the point, continue!

[@BrightBoost]

Thanks for your kind words and encouragement 🙏

[@vivianzhang6536]

Really love how you explained the things! Big shout out to women in tech!

[@BrightBoost]

Appreciate it 😊

[@moviecutcreations4126]

Really appreciate the way you explained. Easy to understand. Pls post your videos on Spring Security along with Webflux topics. Waiting for it....❤

[@dhalua]

Thanks a lot, I got all the things which I was looking for. God bless u

[@BrightBoost]

Love to hear that. Good luck!

[@Channel-iu6de]

This is such a good tutorial, I wish you would do more Spring videos.

[@juliomaciasgonzalez6572]

Hi, thank you for your video, wonderful explanation. I wish you would continue the content some day. 😃👍

[@BrightBoost]

Thank you for your kind words. I will!

[@miltonezeh5085]

The best tutorial out there. Excellent.

[@BrightBoost]

Thank you 😊

[@shubhamagarwal9182]

Mesmerizing way of teaching ❤😸

[@xbz24]

Loved the bean definition, incredible

[@BrightBoost]

Thanks for letting me know! Good luck with spring

[@PrakashSingh-bs2qv]

Graspable explanation , thanks.

[@sijiaxiao1557]

very concise and helpful

[@nanoyulianpratama993]

thanks Maaike, this was really helpful to understand what is bean and the ioc in spring...

[@abdullahalmuksittamim2010]

Well explained. And a big thanks to you. This video really helps me to understand what I am looking for.

[@ranasuleman1662]

What an explanation... really great...I hope you continue making videos

[@chinchi4293]

Thank you very much. Please make more of those videos.

[@biswajitmahato4413]

Your explanation is just awesome. one of the best spring videos I saw. Please make a series of it.

[@BrightBoost]

Thank you so much! Which one would you like to see next?

[@eleazarberrios740]

Great explanation!

[@rafaali9662]

عظمة على عظمة legende you did what the others couldn't; well done

[@BrightBoost]

شكراً جزيلاً🙏 truly appreciate your support and encouragement! Good luck on your Spring journey

[@EnriqueMoranG]

You are the best! ♥ respect to you and your incredible way of explaining things!

[@BrightBoost]

🥰

[@violetavss1719]

Genial video explained.I would like to see more videosl ike that explained for everyone. Unfortunatelly a lot of spring resources explain the most concepts so technical as it's hard to understand it.I think that you have a busy live,but I'd like to see more content on spring explained like that.

[@victormontivero1998]

I really love the way you explain, very clever, even when english is not my native languague i still can undestand everything. I hope you will be back soon.

[@BrightBoost]

Thank you Victor 🥰

[@hrudayaranjansahoo2781]

Hello Maaike! This is the BEST bean tutorial / introduction out here on youtube! Liked and subscribed! :) Please continue making such lucid and "clear" videos explaining fundamental concepts in Spring / java etc... I am looking forward to your periodic uploads!

[@BrightBoost]

I will! If you have any requests for specific topics, please let me know ☺

[@hrudayaranjansahoo2781]

@@BrightBoost Hi Maaike! I have a request for you: I would really love to know a bit about the history of JAVA EE applications: how EJB came int picture, how applications were built using Java in early 2000s, how Struts came into picture and how eventually it was replaced by Spring / Spring MVC. Is it possible for you to create a short video on that?

[@SayujyaShibin]

Excellent tutorial, very well explained.

[@IkemNwodo]

This is an excellent video. Well explained and spot on. Please keep it up. More of these Spring videos. I have subscribed already. Thank you so much.

[@ganeshambekar5274]

Great, I'm lucky, it works great for me without errors

[@karuchiu]

Thanks a lot. From Kenya

[@VasileSurdu]

Thanks, good for refreshing the knowledge

[@tonylangworthy5479]

You come highly recommended by Kent Hervey! Kent and I work together, so he shared this with me. Thank you for making this video.

[@BrightBoost]

Haha lovely to hear that! You're welcome :)

[@janchristophpostoluk3741]

Danke Maaike, tolle Einführung 😀

[@BrightBoost]

Gerne geschehen!

[@janszczekulski3916]

This was really helpful, would love to see more parts, with the same tempo

[@BcheriJ]

Got to learn something new, Thank you :)

[@cuzzamlkral372]

You explain really well. I hope you will come back. I wish you success in your life.

[@BrightBoost]

Thank you! I will come back :) best wishes for you too ❤️

[@cuzzamlkral372]

@@BrightBoost Gracias❤

[@szonoko]

Awesome explanation, thank you so much!

[@mibel8808]

Hej Maaike, you mentioned in a comment, when someone asked about new videos, that you are busy producing videos for other platforms. Do you have some conent about spring already? I really would like to see it because, like other people said, this is the best video on Spring beans. I think you have a great way of teaching. Even if it is behind a paywall, i can spend some money. But I dont want to sell my kidneys for it. Cheers

[@lpnjp]

Wow, great one. Thanks a TON..

[@paragkadam2169]

Loved your style of teaching.. Would like more such content on spring

[@BrightBoost]

It's in the making!!

[@mej12]

​@@BrightBoost🥺 yes, more Spring content please

[@devolajide]

Well explained. Thank you so much. God bless

[@mehulsolanki9435]

Brilliant. To the point and very informative!

[@fuhrer1258]

Thank you🙏 for really great content Maaike.