Java Generics Tutorial

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[@KeepOnCoding]

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[@lindawisebear]

This is the best explanation of Generics I've seen on the internet. I loved how you started with the problem to solve, and then showed how generics is useful when tackling that problem :)

[@999loaderu]

true dat. Fell the same

[@gauravmishra8782]

True

[@KnakuanaRka]

Also, something else to add about generics: If you’re expecting some specific property of the class you put into a generic, you can write that into your generic. For example, if your class had an array of T’s that you wanted to sort, just putting MyClass will make your compiler complain that you’re doing something unsafe. This is because you can only use sort() on the array if the class T implements the Comparable interface and its compareTo() method, and there’s no guarantee someone won’t try to make it with some class Java doesn’t know how to compare or sort (like a custom one). The solution here? Write your class header as MyClass. This tells the compiler that you will only make MyClass’es with types that can be sorted. This uses “extends” as opposed to the “implements” usually used for interfaces because you’re just making a promise about the generic class, not actually implementing one, and the second T is because Comparable is also generic (so you need to say that T implements a method to compare T objects specifically).

[@eustachybakielka]

It's not because of reification of arrays?

[@KnakuanaRka]

@@eustachybakielka Not sure what you’re referring to.

[@eustachybakielka]

@@KnakuanaRka "For example, if your class had an array of T’s that you wanted to sort, just putting MyClass will make your compiler complain that you’re doing something unsafe"

[@KnakuanaRka]

@@eustachybakielka What the heck is reification of arrays?

[@eustachybakielka]

@@KnakuanaRka What is reification in Java? In the context of Java as a programming language, reification is the process by which a user program or any aspect of a programming language that was implicit in the translated program and the run-time system, are expressed in the language itself. In Java, there exist "reifiable types" that are "completely available at run time" (i.e. their information is not erased during compilation). Example: //Allocates an array of type String, so it is reified String[] aStringArray = new String[10]; //Allocates a list with no type, Java does not reify generic types List aStringList = new ArrayList();

[@philippebaillargeon5204]

I like the way you explain things: Java developers created Generics to solve a problem, so I think its pretty logical to talk about the problem before talking about the concepts that were created to solve it. Great video !

[@mastershonobi110]

Super great point(illustrate the problem to solve, before the concept). A lot of Java Channels should be taking notes!!

[@angledcoathanger]

Totally agree - it's hard to get excited about a key if you haven't seen the lock that it opens

[@abdullahmajed7554]

that was really simple i love the way you edit the video making switch between you and the code it feels so clean, thank you

[@mohannadfadhal4282]

Thank you so much, Sir. You made the explanation for generics very simplified, especially, by the style of starting with the problem first and then showing the solution! 🤩

[@deeptimonga7375]

Keep On Making such videos on Keep On Coding channel. Really Helpful !!

[@KeepOnCoding]

Thanks for watching Deepti!

[@TS-wj4im]

Dude thank you. My text book way over complicated generics. Now it all makes sense.

[@fredericoamigo]

Thank you so much for this! I love your Java tutorials. So simple, clean and explanatory. Keep up the good work!

[@JosephGallagher]

This is the most concise and easy to understand video I've seen so far on Generics, thank you so much :D

[@philyeo]

awesome stuff. I liked the way you explained it - showing the problem first and how generics can help save the day!

Wow! You explained it all so good. I finally feel like I understand this. Thank you so much. Please keep it coming.

[@hannahc8436]

This was such a great explanation of Generics. I've been so confused about it for the past few weeks. Thank you!!

[@shreypatel9379]

This was the best explanation on youtube, short and concise. Thank you and keep making such videos

[@delmayank]

Lounge Coding! I really liked the theme. A new touch to coding tutorials. I am your fan now. You rock! Oh! And the stuff that you covered in this tutorial is of great value. You explained it easily and flawlessly.

[@shagiwan]

Second year of studying Software Development in Uni and this is just the best explanation ive heard! Great job man!

[@IgorBeneli1014]

You're incredible you explained with 12min a concept that my professor couldn't do it with 1 hour. Keep doing this amazing job thank you so much!

[@BoetFly]

Man, thank you so much, i finally understand those generics now :D

[@prabhakarlal4799]

Nice and simplified explanation of a complicated topic. Thank you.

[@isah.2980]

Thank you so much! Please, keep doing videos like this!

[@conea6891]

I like this fast paced explanation.

[@ziekaman2450]

Thankyou so much. You're very talented in explaining complicated Java thingys!

[@himanshushukla787]

bro your java playlist is so underrated. I love it

[@anx007d]

Thank You very much .. after looking many videos from different sources ....... this video absolutely cleared my thoughts for Java Generics.

[@LIP45GUL]

Great video, thanks for explaining so well!

[@CarlosRamirez-uz7hs]

Great video man, keep doing what you do

[@PrakashVl]

This tutorial is helpful for filling the gaps in generics, thanks for explaining thoroughly.

[@gauravkumarsingh640]

This is legit the best video I could find to understand Generics!

[@RubenGarciaCS]

Excellent quality! Thank you

[@19sunheart96]

Nice video! Very easy to understand explanation of the concept.

[@alexmedina5135]

what a good, easy, and elegant way to explain generics ... keep it up!!

[@abhijeetmokale9024]

Seriously this way of learning from the problem is amazing! Thanks Sir!!

[@leonrickert4061]

Keep on man, cool teaching style

[@89pravinb]

Thank you for creating this video! Very concise and informative

[@monetoast]

Exceptional video, very clear!

[@TKollaKid]

Great explanation - clear and helpful. Thank you.

[@olegc6209]

Awesome explanation, thanks for your help!

[@2010aishwary]

very nice to the point video, subbed

[@okikiomisande8732]

Awesome explaination, thank you!

[@AshBeastreal]

Wow this is one of the best explainer videos. Loved watching it🤩

[@ledtargaouschi5831]

Your videos are very helpful and your teaching methods are very clear

[@fahadtahir6]

Very informative and loved your communication style

[@lurkhidden9126]

Learned hella! Good looks my guy

[@anithachowdary9716]

I understood the topic very well.Thank you so much Please share more videos

[@Burak-cr6um]

Thank you, It was very helpful as usual.

[@qwarlockz8017]

Nice video. You do have a great way of explaining things.

[@aavocadoToast]

Great video! Detailed and to the point.

[@damyandimitrov611]

Very well explanation and approach

[@999loaderu]

really well explained m8. Appreciate it. thx

[@morolillyshean8816]

Yes, this is the best one I found. Thanks!

[@tetsuorulin9009]

I love teaching to the problem. Great video and thanks!

[@chinemelumj5349]

Finally understood generics, thank you so much!.

[@kylemanley915]

Sweet tutorial, just subscribed

[@leslyp.blaise7238]

Explanation clear and concise thank you

[@faikyesilyaprak8761]

That was lit bro!!!! Thanks for crystal clear explanation :))))

[@premalupadhyay3555]

Great and simple explanation, I like this way of teaching a lot.

[@williamfernandesdorante6068]

WOW' You're good at teaching code and concepts. Way to go!

[@wovasteengova]

This looks like it's from java, a beginner's guide. I too was confused on what generics fix but thank you for explaining it in the beginning of the video. I think you should do that to all your videos

[@earl0fBronze]

I read a thirty page chapter on this, one ear out the other. This video is outstanding, mind blown.

[@ItsTheDannyShow]

Subscribing man. You helped so much.

[@saintfrancisbeats9639]

Dope! I am currently in an Intermediate Programming college course and they just want us to read a document. I was so lost. This clarified alot. Also it cause me to switch from Netbeans to IntelliJ IDEA hahaha

[@lazpz617]

This video really helped me understand Generics way more than my instructors classes

[@lancelotlin3459]

Best tutorial! Thanks for your explanation!

[@nikeshparajuli6345]

it's really helpful,thanks a lot .

[@timo_b3]

Thank you, excellent explanation!

[@abidali5131]

Thank you, I learnt something new today

[@kaifahsan8459]

Thanks for the video mate. Pretty well explained. Would be awesome if you keep making videos about core and advanced OOP concepts like this.

[@KeepOnCoding]

Thank you sir. Did you have a specific topic in mind?

[@kaifahsan8459]

Probably topics like interfaces, polymorphism, exceptions, collection frameworks etc. There's a huge Quora thread that might help you as well: www.quora.com/What-is-a-complete-list-of-topics-of-Core-Java-and-topics-of-Advanced-Java

[@KeepOnCoding]

Awesome! Thanks!

[@kalyanmatamarugu9396]

Clean, simple and perfect content!

[@gmailservice9945]

very useful and well explained. thank you

[@irenaslavova2041]

Very helpful for me, thanks!

[@sjakie0420]

Thanks, very clear explanation

[@thomi100]

Very well explained, thanks!

[@tamimjabr1648]

You are awesome bro, thank you for this video

[@MrMarkjams]

This is a great video! Could you do one on Interfaces?

[@dalvandi]

Possibly one of the best, clearest, and crispest explanations on the generic class that I've seen! Keep up the great content dude!

[@ramiayash7658]

i highly agree with you, the guy is so clear with his explanations

[@technocoh]

Amazing, simple explanation, thank you! =D

[@tolstoievski4926]

You can also declare generic type at method scope id you're planning to use static methods (methods that are not requiring you to instantiate class to use it)

[@ravenmadd1343]

Why can't everything be explained this clearly and quickly? Thanks for doing this and keep up the good work.

[@bibahbibah5108]

i like the u develop the subject, uake java very easy to work with

[@SaljooqAltaf]

This just might be personal preference but the best and most detailed explanations for anyone studying comp sci are found in this channel - no idea why views haven't hit a million

[@nisarullah7734]

Great work keep it up

[@beatakazmierczak2543]

Simply explained! Thank you!

[@101matthias]

I just watched 9 hours of online classes from my teacher on generics and I understood nothing. Less than nothing. 10 minutes of you and everything is clear it's super easy actually.

[@technocoh]

yeah not every professional or teacher is able to share his knowledge the proper way... ;)

[@pinolskun8764]

@@technocoh yeah if someone need 9 hours to explain a concept you can safely assume they are the first who don't understand it

[@himangshuchowdhary4369]

Great explanation KOC!

[@ritexcorp]

That was a great explanation of Generics, keep up the good work, I just subscribed to your channel. Do you have something on Java annotations?

[@fernandaribeiro2231]

oh my God, thank you so much!!! you make this look easier

[@chikken007]

Great explanation! Just gained a new Sub. Thank you and keep it up please!

[@athardaif863]

I was struggeling with understanding generics until I watched your video. Thanks a lot :)

[@MrDoctorSchultz]

Smooth, informative, and straight to the point. Keep up the good work!

[@arnabmukherjee5840]

Awesome tutorial bro

[@porkfreegaming5278]

You are awesome! thank you good sir

[@xsendilien9551]

Really awesome bro!

[@cirodecarlineto2483]

Thnks for the vid sam!!

[@sultanrecords1362]

Very Nice Explanation

[@Officially_fit]

This guy is just amazing

[@toniiicarbonelll287]

MAAAAAAAAAAAAAAAAAN that was just awesome thank you very much!

[@netrob]

Well explained. Thanks!

[@buddhikachathuranga2968]

love the way you teach

[@mimischly2547]

thanks man great explanation

[@anugrahps6463]

I really kind of like the way you present bru keep onn