Dependency Injection & Inversion of Control
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- Опубліковано 7 лют 2019
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This week, we're going to talk about the topic of Dependency Injection in Object oriented code. We will implement a solution in Java. You don't need a fancy container to do it, it's actually quite simple to do manually! We will look at how frameworks like Spring use these principles in their dependency injection container. - Навчання та стиль
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What do you guys want to learn next?
everything that is not language specific (Design patterns, SOLID, etc..)
@@stephane3115 Cool. I'll probably do a SOLID overview video and then separate deep dives like this one in a mini series! Thanks!
@@TheSimpleEngineer Sounds awesome! Looking forward to it!
Dude, I just wanted to let you know that your explanation is so FREAKING awesome, I dont why you have such few views, just keep up the good work, you gonna make it.
Hard luck
P.S.: I would love to see some generic videos about concepts that every software engineer should know
too fast, 40% not clear
Fantastic explanation! So many DI and IOC explanations, but none of them seemed to convince my logic. Your video made the concept so easy to understand. Thanks
Glad to hear!
After a few hours of watching videos and reading articles, this has finally made the bulb of my brain turn on and understand exactly what IOC and DI are. The fact that you uploaded this a little more than a month before I needed it makes it even more amazing to me. Thanks a lot, buddy!
Dude, congrats... I've watched about 10 IoC or dependency injection videos, and this is the most comprehensive one yet... Cheers!
Thanks for not spending 45 minutes on an introduction at the preschool level to what the concept of "depending" means in life in general. Much appreciated. You got right into the meat while still going at a level a beginner could understand. Much appreciated.
Easily the best explanation I have seen, simple, succint and thorough - well done
I watched tutorials, read books, followed documentation, but this fit me so well. Thank you very much! People could learn a lot from you in one day a lot.
It was extremely easy to understand. It's an excellent lecture!
Thank you!!
Finally a dude that explains the basic concepts and then actually shows the practical use.. congrats my dude.
Perfect explanation for DI!
Love from South Korea
Oh man, I watched my instructor's video 3 times, didn't get the concept. But you made me understand everything within 8 minutes. I think the way you code and shows example is really helpful. Hats off!
I was very confused with this IoC concept and watched many videos on UA-cam and nobody explained it better than you.
I wish I could give thousands of likes to this video.
thanks for showing the problem with constructor injection. 😊
This is the best video explanation for IoC, dependency Inversion principle and dependency injection. 👏👏👏✌️
Men your voice is very clear, to be honest everything was just clear! very good understanding
you are an amazing teacher with great pace and tone of voice and you really know how to communicate important information in a simple easy to understand way. thank you!
I've been searching & watching videos about DI. This is the best so far!!!? You've got a gift of teaching!!! Thank you very much!!!
Finally someone explained DI in a very practical and simple way. Thankss!
I've listened to other people explaining this topic. You've had the best, easiest to listen to explanation. Thanks
Very nice! Keeping it simple.
I've watched multiple videos on the subject, but your explanation condensed the answer to "why", which helped me a lot to start using the principle in practice, so thanks a ton!
This is gold. Thank you for showing your teaching skills and makings a concise no nonsense video. This is the way to learn a concept.
Best video in yt on Dependency Injection & Inversion of Control.
After hours of wasting my time on different articles and videos, I finally understood from this video. Thanks a lot.
Very helpful vid. Thnx.
@8:50, the issue you introduced - of having 2 databases - can easily be resolved by employing a façade instead of DI.
I can't believe I watched a lot of videos about DI and IoC in Laravel and still couldn't understand the concept and now I find your video about the same concepts in Java and it's all crystal clear out of a sudden. Your explanations were so good. Thanks a thon!
Been watching videos about dependency injection for the last few days and I never quite understood it like you just explained. I'm really glad UA-cam algorithm listens to my wants. You just earned a sub
This really is the best explanation of DI and IOC I have seen yet! Your explanation was very easy to understand!
Damn, I've been using Java for over 7 years now and I haven't fully grasped Dependency Injection/Inversion of Control until I found your video. I just discovered your channel and this video and it is very simple to understand. I think you are on par or might even be better than JavaBrains. Definitely, better than other UA-camrs who teach Java technologies and tools.
Thanks for the kind words.
This was amazing. It just explained everything I had my doubts about.
Dude. You blew my mind with how simple you made this.
The best tutorial on Dependency injection yet! Seems to tackle every "why" regarding the topic. A suggestion: You could have had a class that creates the object(initializes database) and return the object before going into the framework section. The most perfect explanation on the internet.
I have spent literally years trying to find a decent video or article to understand DI. This is it right here, the explanation just makes sense
Wow what a wrap-up! Explaining beautifully from the beginning and connecting it to Spring seamlessly! Amazing Stuff:D
By far the best use of code to explain this concept! Thank you !
Im learning C# and Dependency Injection but was confused by some of the video on youtube specifically targeting c#. I stumbled on to your video and you made the concept so Clear! Thank you!
Lucky to find this video, whenever I need to revise DI, IoC I prefer this one, it's simple, crisp, and clear. Thanks a lot :)
Thank you for this explanation. I did not understand this concept until you talked about the usage of unit testing and then the quarter fell. Thank you.
By far the best explanation for IOC and Dependency Injection. All other channels complicate that stuff. Much appreciated. Subbed your channel as well.
I don't know Java much, I just wanted to understand the principles of DI. And you nailed it. Crisp, fast, to the point. Kudos
What an amazing and clarifying explanation. Thanks you all so much!
The best explanation of these two very important concepts. Thank you Ryan
Finally, today i have understood IoC explicitly!!! yes you are a gooood lecturer!
Watching this 5 years later, still a fantastic video
Still after 3 years its most relevant video on this topic. Kudos from India.
This is the best and greatest explanation on all over the internet!! After spending hours trying to learn this s*it I've finally found you. Thanks a lot!!
I watched quite a few videos before I found this gem. Thanks for keeping it simple
this explanation couldn't be better!! thank you
Best lecture I seen about this topic.
This was fantastic, the easiest explanation for DI ever!
This is a great DI explanation with Realtime example !
Thanks Ryan for sharing a great content.
🤟❤
Automatic dependency part is really helpful since it reduces manual dependency injection
This is the best video on IOC I've seen on UA-cam.
Beautiful explanation and comfortable demonstration! Thanks!
Second time I search for something that leads me to this Channel. Subscribed
The BEST explanation of DI on UA-cam
Awesome video, very well explained. Its always been tricky to understand it but now I do. Thank you!
AMAZING! You just turn my brain to another level. Thanks! and keep doing your videos
Fantastic! Now I really got a clear picture of why this principal/design is needed!
Thank you for this explanation. Subscribed, I hope you've got time to keep software design principal videos coming. Really good stuff.
Thanks to you and your simplest examples to understand this concept.
Awesome, thanks! Something went click, finally!!! Been struggling to understand dependency injection and IoC up until now
i have been looking for a content like this for long time, a finally found here... concepts explained very much simple. thanks a lot.
Excellent. In 10 minutes I went from being almost clueless about dependency injection to having a basic understanding.
Awesome! Great explanation in a super short video !!
Really good explanation! Base on the problems that we met in actually programming, and then show how IoC solve these problems. Very easy to understand ioc from your tutorial
Awesomely Explained, Thank you!
Good explanation, I did not understand IoC and DI before watching your video!
Straight to the point and very well done. You could also post the first 7 minutes (7:05) as a separate video and that will make an excellent introduction to the concepts of IoC and dependency injection, regardless of one's technology of choice. I'm definitely subscribing :)
This was really well done and helpful. Thank you.
Thank you very much! you made it extremely easy to understand.
Mind blowing explanation! Thank you so much :)
Perfect explanation! Thank you very much for this!
Great video man! These are confusing concepts, which you were able to put in a simple way! Thanks for sharing!
Excellent information!
Thank you so much!
Awesome. Finally a tutorial that makes sense. Thank you!
I have to agree with most up top, really well explained, thanks and well done!
Great video!!! Answered so many questions
Thank you for this! I had to look into these for a job interview and this video is way more comprehensible than my college notes! haha
Top quality explanation, very clear! Thanks
I love the lamp analogy. I am stealing it.
ive been looking everywhere to understand this concept. this was so well explained.
Sweet
this is so good very clear explanation for IOC and DI, the example is pretty straight forward and simple to understand for beginners with no knowledge of spring, thank you!!
Thanks! Glad you enjoyed it
nice and clean explanation! Thank you so much!
This is an outstanding explanation, thank you.
Thank you so much for this wonderful lecture!!!
Very well explained. Thank you.
Thank you! I’m a complete beginner and I was having really hard time understanding what ioc is about. Your explained it so clearly.
I still don't understand i think i am dumb
very nice clean and simple. good job
thanks so much mate !!! this tutorial was sooo great !!
Finally I am able to feel the real benifit of doing this after hearing these terms repeatedly for over a decade
Awesome video. Finally, it makes sense
This explanation is amazing!
Thanks.Very clear explanations👍
short ,fast and useful . thanks
Excellent explanation! Thank you!
Fantastic video, very well done
Fantastic explanation, thank you so much.
holy shit. I have not found such a good explanation of this concept on youtube. I have given up on those 2 hour tutorials, i just needed a high level explanation. This should've have more views!
Short and to the point. 😎 Thanks !
Nothing can be better than this. As a crash course I used to see this video :D
Great explanation! 🤩 Thanks!