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Dependency Injection & Inversion of Control

Ryan Schachte

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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.

20 Comments

@TheSimpleEngineer Creator 7 years ago Pinned

What do you guys want to learn next?

@laurentiuanghel1562 4 years ago

Finally a dude that explains the basic concepts and then actually shows the practical use.. congrats my dude.

@amanbhatia7442 7 years ago

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

@Russellye5man1 6 years ago

Refreshing to have a tutorial from a guy without an Indian accent!

@TheJaguar1983 2 years ago

One of the issues I've found with Dependency Injection is that, if you are coming into DI code that someone else made, it can be difficult to find where the injected objects are defined/created/initialised/etc. The main issue is that the code becomes less linear, so tracing through to find the origin point when you need to modify or maintain it can be a real pain.

@Ajekiy 7 years ago

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!

@yoshihitotuba 6 years ago

It was extremely easy to understand. It's an excellent lecture!
Thank you!!

@Ryan-hk5yb 2 years ago

Watching this 5 years later, still a fantastic video

@pablogarin 5 years ago

Dude, congrats... I've watched about 10 IoC or dependency injection videos, and this is the most comprehensive one yet... Cheers!

@weisjerry 4 years ago

Excellent. In 10 minutes I went from being almost clueless about dependency injection to having a basic understanding.

@adeizayusuf 5 years ago

This is the best video on IOC I've seen on YouTube.

@marksimpson4310 5 years ago

I watched quite a few videos before I found this gem. Thanks for keeping it simple

@ayoubdkhissi 4 years ago

this explanation couldn't be better!! thank you

@ĐỗMinh-x6d 1 year ago

wow, your teaching skills is unbelivable

@beezow7113 5 years ago

I love the lamp analogy. I am stealing it.

@sristijaiswal1013 5 years ago

After hours of wasting my time on different articles and videos, I finally understood from this video. Thanks a lot.

@rajibsarker3729 6 years ago

thanks for showing the problem with constructor injection. 😊

@lee38xzy 5 years ago

Awesome! Great explanation in a super short video !!

@ceki9900 4 years ago

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.