Java Anonymous Inner Classes Explained in 6 Minutes

Anonymous Inner Classes fully explained in just 6 minutes.
We'll also explain what Anonymous Inner Classes have to do with Bigfoot...
Anonymous inner classes can sound like a scary concept, but they're really pretty simple. We'll explain them in just a few minutes in this beginner Java tutorial video lesson.
What do Anonymous Inner Classes in Java have to do with bigfoot? You're about to find out.
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Hi, I'm John! I'm a Lead Java Software Engineer and I've been in the programming industry for more than a decade. I love sharing what I've learned over the years in a way that's understandable for all levels of Java learners.
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[@19891214ful]

I’ve been in the industry for 8+ years and sometimes I forget the basics. Thank you very much for the effort. You are a brilliant teacher. Respect ✊ ❤️

[@jvsnyc]

Excellent. I can hardly think of anything to add that wouldn't make it too long. Some people might think "Who needs this crap anymore, we have lambdas now and they are even neater!" That is more than a little true, but here's a couple of restrictions on lambdas that don't apply to anonymous inner classes: Lambdas can only be used with Single Abstract Method interfaces, and can only override that single abstract method itself. An anonymous inner class, on the other hand can merrily override more than one method, or can do even more, tho it is a good idea not to get carried away. If there's too much in it, give that sucker a name. An anonymous inner class can implement any interface, not just Single Abstract Method ones, again, best not to get too carried away with this but the language won't stop you, and can also subclass any abstract or concrete class if there's a good reason to. So lambdas are great, but it would be premature to throw Anonymous Inner Classes out of your Java toolbox.

[@CodingWithJohn]

Sounds like you know more than enough to be doing your own videos!

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That last "Grawlneenlnenleng" though😂

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Your lessons are prompt, easy to understand, and generally fun to watch. A perfect way for me to brush up my rusty Java skills. Keep up the good word!

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Interviewer: So what is an anonymous class in java? My brain: 2:21

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[@CodingWithJohn]

Happy to help!

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Good luck, let us know how it goes!

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[@Nathan00at78Uuiu]

This helped me understand some code at work. There is an anonymous class that is implementing an abstract class that takes in a Generic Type which implements an Interface with a Generic Type. So public abstract class PortalAsyncCallback implements AsyncCallback and the anonymous class is actually only overriding the methods from the AsyncCallback Interface.

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[@kostiantynkarzhanov9216]

Very good explanation! Thank you! 💛

[@spiritualquest6092]

Best explanation ever, after going through many tutorials of Innerclass concept. You are one of the Best Teachers.

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really clear, you are an excellent teacher

[@igor9919]

hi John, I've been loving your content so far, I wanted to give a suggestion if you don't mind! One of the things we wonder as we learn new concepts, which you make it very easy to understand is how we could/would use this in a real world situation, because obviously the examples used are simple (so we can understand), so perhaps it would be nice to add some "real world scenario" use case, just so we can have that extra "ahhh that makes sense" :D

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The clearest way of providing information! Really a cool guy

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Everything you teach is clear and understandable.

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Amazing work! You explained incredibly this topic that was bugging me

[@CodingWithJohn]

Glad it was helpful!

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[@Skilur1983]

Great explanation. Loved bigfoot noise

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Great channel, super clear explanations, always clearly explaining something I didn’t quite understand before. Cheers

[@ShubhamChakrabortyBA--]

Sir, please make a video on Singleton classes.

[@iIO_OIi]

OHhh, so those are classes, good to know. It's also nice to know there's a way to make a class that can only ever have one instance of itself, because I wanted that for something I want to do in the future, and will probably use it for many other things.

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Simply to the point...

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Brilliant tutoring.

[@tharinduwijetunge]

This is exactly what I was looking for. Thank you very much for your explanation, and nice Bigfoot btw

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I Totally agree with the guy that wrote Im not kidding whe I say you´re the best Java Teacher but to help the purpose of the channel im creating another comment

[@mustapharaimilawal8053]

Thanks a lot for making this video, your explanation is super easy to follow, you are a very good..... great teacher. I was trying to use an anonymous class for multi-threading with the run method and boom!!!, it was your second example. Thanks a lot.

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Wow this video was so easy and fun! Loved the big foot noise, hehe!! Keep up the good work!!

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thanks for the great explanation

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John, please make a video with lambda explaining

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[@2k7Bertram]

That bigfoot statement had me like "Wait...what??"

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Thanks John for this video. You explained it very clearly. Please continue with these.

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Thank you so much I actually understand it know

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Yep, still the best explanation I could have came across

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Awesome..Please explain Supplier,Consumer,Predicate,Function etc..Many thanks for making things easy to learn.

[@burgerbob7324]

Awesome video as always. Thanks John!

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[@Roman-qq9gx]

well made vid, thanks. “one-time-use class with an interface”. jesus, I love how much easier this is in JS. that is just a simple variable. strong OOP is jaded 😂

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Thanks John. This is really useful. I loved that bigfoot sound lol,. It's so accurate

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voice of big foot lol, best teacher ever!

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[@semilife]

Very clear and simple explanation.

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Perfect articulation. I like it!

[@juliaineslopez4856]

You are THE BEST. Never stop making videos!! I have a question. Can we include fields in an anonymous class? I read we cant because we can't include a statement in a statement but i'm not conviced!

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I wish you taught my CPSC class!

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[@CodingWithJohn]

I had no idea anonymous inner classes could save lives!

[@yass_h_z]

Hahahahaha i cannot believe that you replied to me thanks man i really appreciate the efforts you're making and the awesome explanations (Btw my exam is tomorrow hahaha)

[@CodingWithJohn]

Good luck, let us all know how it goes!

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Thank you very much

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Keep Up the good work

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Great teacher! Yes, one of the best!

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Your videos are great! Thank you 😀

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Great explanation, you really helped me!

[@naturalrunning]

Thank you very much for your work! It's both - learning and having fun at the same time :-)

[@bwprogrammers874]

My java instructor... i hope you will do video on generics someday anyway ,best content as always...

[@OgedeiKhanOKOK]

How to decide when to use Anonymous Inner Class vs Singleton Design Pattern ? Is size of the class the only factor or something else too.

[@liliannakiss290]

Wow, I love those tutorials!

[@LukasJozefaciuk]

can you also explain the diffrence between Anonymous Inner Class and Singleton? Thanks in advance. I can only confirm a perfect teacher so i am enjoyful enjoy each session. Thanks