Dependency Injection & Inversion of Control
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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.
Пікірлер: 332
What do you guys want to learn next?
@stephane3115
5 жыл бұрын
everything that is not language specific (Design patterns, SOLID, etc..)
@TheSimpleEngineer
5 жыл бұрын
@@stephane3115 Cool. I'll probably do a SOLID overview video and then separate deep dives like this one in a mini series! Thanks!
@stephane3115
5 жыл бұрын
@@TheSimpleEngineer Sounds awesome! Looking forward to it!
@ilyasselamrani5674
5 жыл бұрын
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
@ishandulet4289
4 жыл бұрын
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
@TheSimpleEngineer
5 жыл бұрын
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!
Easily the best explanation I have seen, simple, succint and thorough - well done
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.
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 listened to other people explaining this topic. You've had the best, easiest to listen to explanation. Thanks
This was amazing. It just explained everything I had my doubts about.
It was extremely easy to understand. It's an excellent lecture! Thank you!!
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!
Dude, congrats... I've watched about 10 IoC or dependency injection videos, and this is the most comprehensive one yet... Cheers!
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.
Dude. You blew my mind with how simple you made this.
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!!!
This really is the best explanation of DI and IOC I have seen yet! Your explanation was very easy to understand!
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!
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.
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.
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
By far the best use of code to explain this concept! Thank you !
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!
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 :)
Finally someone explained DI in a very practical and simple way. Thankss!
Wow what a wrap-up! Explaining beautifully from the beginning and connecting it to Spring seamlessly! Amazing Stuff:D
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!
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
The best explanation of these two very important concepts. Thank you Ryan
Finally a dude that explains the basic concepts and then actually shows the practical use.. congrats my dude.
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 KZread algorithm listens to my wants. You just earned a sub
Finally, today i have understood IoC explicitly!!! yes you are a gooood lecturer!
I was very confused with this IoC concept and watched many videos on KZread and nobody explained it better than you. I wish I could give thousands of likes to this video.
Awesome, thanks! Something went click, finally!!! Been struggling to understand dependency injection and IoC up until now
What an amazing and clarifying explanation. Thanks you all so much!
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.
After hours of wasting my time on different articles and videos, I finally understood from this video. Thanks a lot.
Fantastic! Now I really got a clear picture of why this principal/design is needed!
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
By far the best explanation for IOC and Dependency Injection. All other channels complicate that stuff. Much appreciated. Subbed your channel as well.
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.
Perfect explanation for DI! Love from South Korea
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!!
Good illustration. I liked how the debases are initialized in some global space outside the hand coded application.
This was fantastic, the easiest explanation for DI ever!
Still after 3 years its most relevant video on this topic. Kudos from India.
This is the best video on IOC I've seen on KZread.
i have been looking for a content like this for long time, a finally found here... concepts explained very much simple. thanks a lot.
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
Beautiful explanation and comfortable demonstration! Thanks!
This is the best video explanation for IoC, dependency Inversion principle and dependency injection. 👏👏👏✌️
The BEST explanation of DI on KZread
Thank you! I’m a complete beginner and I was having really hard time understanding what ioc is about. Your explained it so clearly.
@kamikaze9785
3 жыл бұрын
I still don't understand i think i am dumb
Men your voice is very clear, to be honest everything was just clear! very good understanding
Thanks to you and your simplest examples to understand this concept.
I watched quite a few videos before I found this gem. Thanks for keeping it simple
Awesome video, very well explained. Its always been tricky to understand it but now I do. Thank you!
Second time I search for something that leads me to this Channel. Subscribed
I have to agree with most up top, really well explained, thanks and well done!
Watching this 5 years later, still a fantastic video
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
this explanation couldn't be better!! thank you
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!!
@TheSimpleEngineer
4 жыл бұрын
Thanks! Glad you enjoyed it
ive been looking everywhere to understand this concept. this was so well explained.
@TheSimpleEngineer
4 жыл бұрын
Sweet
Thank you for this explanation. Subscribed, I hope you've got time to keep software design principal videos coming. Really good stuff.
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 KZreadrs who teach Java technologies and tools.
@TheSimpleEngineer
3 жыл бұрын
Thanks for the kind words.
Great video man! These are confusing concepts, which you were able to put in a simple way! Thanks for sharing!
This was really well done and helpful. Thank you.
thanks for showing the problem with constructor injection. 😊
Great content. Definitely subscribing. As a experienced dev I just need a quick example to follow to get the idea. A lot easier than trying to read the docs and get the point.
Perfect explanation! Thank you very much for this!
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 is an outstanding explanation, thank you.
Best lecture I seen about this topic.
Awesome. Finally a tutorial that makes sense. Thank you!
Awesome! Great explanation in a super short video !!
Excellent explanation! Thank you!
Top quality explanation, very clear! Thanks
best example and explanation I've heard so far. a great vid or series would be to set up a basic program using IoC and Java Spring
AMAZING! You just turn my brain to another level. Thanks! and keep doing your videos
Amazing stuff, loved it.
After spending 1.5 hours on the web, this is by far the most useful explanation of DI and IOC. Thanks a lot! Can you also cover the Java EE vs Spring vs Springboot?
Awesomely Explained, Thank you!
This is gold! Thanks for the effort :)
Such a good explanation ! Keep going !
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!
Thank you very much! you made it extremely easy to understand.
Thank you so much for this wonderful lecture!!!
Great video, just what I needed in the state i'm in. But I think, watching this video only really helps when you already have an idea of the concepts. That's how it was to me. Before I watched the SOLID principle of Uncle Bob (a really good and entertaining video) but he has a very much more high level approach on it, looking at it from the business side (which we devs like to black out as often as possible :-))))) ), and your video directly afterwards , with this straight to the point and practical approach, was a perfect combination
Nothing can be better than this. As a crash course I used to see this video :D
Great explanation! Thank you
You are a fantastic teacher! Hope you return to making videos...wish you all the best!
Best video in yt on Dependency Injection & Inversion of Control.
Excellent information! Thank you so much!
Fantastic explanation, thank youuuu!!!
I'm no Java developer, but I found that most of the OO-related terminology used turn out to be things I'm already familiar and accustomed to but simply didn't know the official descriptions for. This is also by far the best description of either concept I've come across thus far. Wikipedia tends to be way too bloated for me to chew through.
Good explanation, I did not understand IoC and DI before watching your video!
Very good video. That was exactly what I need.
Mind blowing explanation! Thank you so much :)
Short and to the point. 😎 Thanks !
Thank you so much, Great example and explanation. Able to get the concept in a understandable manner :)
bets explanation for DI and IOC i found on youtube, thank you!