OOP 3 | Principles - Inheritance, Polymorphism, Encapsulation, Abstraction

Рет қаралды 441,683

Күн бұрын

Important video for OOP interviews! The complete and in-depth explanation with real-world examples of #OOP principles such as Inheritance, Polymorphism, Encapsulation and Abstraction.
A detailed explanation of overloading vs overriding, encapsulation vs abstraction vs data hiding, types of inheritance and more!
Complete OOP playlist: • Object Oriented Progra...
Take part in the learning in public initiative! Share your learnings on LinkedIn and Twitter with #DSAwithKunal & don't forget to tag us!
👉 Resources
- Join Replit: join.replit.com/kunal-kushwaha
- Complete Java DSA playlist: • Java + DSA + Interview...
- Code, Assignments, & Notes: github.com/kunal-kushwaha/DSA...
➡️ Connect with me: kunalkushwaha.com
=========================================
0:00:00 Introduction
0:01:15 Principles of OOP
0:02:26 Inheritance
0:11:30 Example: Box
0:17:49 Explaination
0:23:31 "private" keyword
0:36:26 "super" keyword
0:48:00 Single Inheritance
1:00:17 Multiple Inheritance
1:04:25 Hierarchial Inheritance
1:07:28 Hybrid Inheritance
1:10:26 Polymorphism
1:12:53 Example: Shapes
1:19:27 Types of Polymorphism
1:19:57 Static Polymorphism
1:20:34 Overloading
1:28:02 Dynamic Polymorphism
1:29:24 Overriding
1:34:08 How Overriding Works?
1:39:05 How Java determines which method to run?
1:45:17 "final" keyword
1:50:49 Can we override static methods?
1:57:02 Encapsulation
1:58:22 Abstraction
2:00:14 Encapsulation vs Abstraction
2:05:33 Example
2:09:33 Data Hiding
2:11:47 Outro
#placement #dsa #interviews

Пікірлер: 1 000

@shubharawat9023 2 жыл бұрын

Your OOP series helped me a lot in my Adobe interview. I answered the Qs in the same way you have explained in the video. Abstraction vs encapsulation, compile time polymorphism vs run time polymorphism, and so many more that you cleared in this video. And I got the intern offer from Adobe. So thank you very much. I owe this to you. Keep up the good work.

@KunalKushwaha 2 жыл бұрын

Congratulations!

@shubharawat9023 2 жыл бұрын

@@KunalKushwaha Thank you!!

@NiteshSingh-bv9lu 2 жыл бұрын

@@arjav7 you give me linkedin profile

@dhruvbhatia5737 2 жыл бұрын

On campus or off campus?

@pratiksoundarkar 2 жыл бұрын

Kunal Sir salute for your teaching

@karthikp6473 2 жыл бұрын

An hour of kunal's course a day, keeps unemployment away 🌚

@ashishandhavarapu8779 2 жыл бұрын

💯

@aaryansj8016 2 жыл бұрын

😂😂😂😂👍

@adbhuthareddy 2 жыл бұрын

🤣😂😅

@dnyaneshwarichatarkar6446 2 жыл бұрын

💯💯

@sarthakpanda7838 Жыл бұрын

bhai placement ho gayi???

@VijayKumar-zi3km 2 жыл бұрын

I have bought a very expensive paid course for DSA and Java. Let me tell you, the course I have bought is no way even closer to what Kunal is teaching in this bootcamp. Can't thank him more. More power to Kunal. Please keep continuing the good work.

@ushamartin5863 Жыл бұрын

which course have you bought?

@MrVrtex 7 ай бұрын

@@ushamartin5863 Probably the aman dhattarwala course

@neeleshnitt 3 ай бұрын

ye cheeze poochni nhi hoti@@ushamartin5863

@ayansiddiqui7383 2 жыл бұрын

1:55:30 "You can inherit but you cannot override, You can run but you can't hide" ~Kunal kushwaha (2021)

@himanshuchoudhary2514 2 ай бұрын

bro i understood this line "you can inherit but you can't override . but i didn't get this line "you can run but you can't hide ??? what's meaning of hide here ?? can you explain me ??

@ChessKing-ud6sg Ай бұрын

@@himanshuchoudhary2514 " You can inherit but you cannot override" in this context means that no matter what you do( even creating another static method with the same name in the child class), you can't override/outrun me , so as both the statements covey a little bit same meaning he uses, you can run but you can't hide it , essentially saying that whatever happens the end result will remain same

@cingizhemidov6990 7 күн бұрын

@@himanshuchoudhary2514 Ibelieve it was reference from one of the episodes from Rick and Morty tv show based on Inception movie. There in one of the dream levels of inception Freddy Krueger inspired character chases Rick and Morty and yells 'you can run but u cant hide"))

@rakeshbabu4790 2 жыл бұрын

I have never watched videos of this much duration but after I started your course ...first I check how much duration it is and more duration it is the more I am happy...

@vaishnavisakhare681 2 жыл бұрын

You can run from OOP but can't hide 😂 Best playlist for OOP .Thank you for keeping this playlist free❤️

@KunalKushwaha 2 жыл бұрын

You're welcome!!

@himanshuchoudhary2514 2 ай бұрын

bro i understood this line "you can inherit but you can't override . but i didn't get this line "you can run but you can't hide ??? what's meaning of hide here ?? can you explain me ??

@MADHUBALA-b9s 19 күн бұрын

Bro where I can see the text notes I couldn't get it @@KunalKushwaha

@krithikagandikota8582 8 ай бұрын

I'm not usually someone who comments down yt videos but this truly deserves one! The best part about this Java playlist is that it makes you enjoy learning Java,I've probably watched the oops playlist 2-3 times and I've only enjoyed it each time, revising concepts additionally! My love for Java , I definitely owe it to this playlist!

@KunalKushwaha 8 ай бұрын

Glad you liked it!

@bhargavbhargav5768 2 жыл бұрын

I was struggling with java and OOP previously. Previous two videos really helped me a lot and now continuing with the third. Thank you❤🙏

@KunalKushwaha 2 жыл бұрын

You're very welcome!

@arimallick Жыл бұрын

"You can run but you cannot hide, you can inherit but you cannot override" 🔥

@himanshuchoudhary2514 2 ай бұрын

bro i understood this line "you can inherit but you can't override . but i didn't get this line "you can run but you can't hide ??? what's meaning of hide here ?? can you explain me ??

@Aditya.Rawat45 7 ай бұрын

When you said in the first few videos of this playlist ,that this is the best and the only playlist that i need,i was like,i dont know why is this guy so overconfident about this.. But now,i just cant explain how true those words were... Nobody is even close to this playlist, literally the best way of teaching, best explanation and all these things for free. Hats off to you man

@adityasiddhapura8156 2 жыл бұрын

"you can run but you cannot hide, you can inherit but you cannot override" 🔥🔥🔥

@himanshuchoudhary2514 2 ай бұрын

bro i understood this line "you can inherit but you can't override . but i didn't get this line "you can run but you can't hide ??? what's meaning of hide here ?? can you explain me ??

@DHRUVSARASWAT-yy4jx 2 ай бұрын

It means that anywhere you will going you can't hide yourself with people around you@@himanshuchoudhary2514

@anmolverma075 9 ай бұрын

You can run but you cannot hide, You can inherit but you cannot Override. Very deep.🎇

@himanshuchoudhary2514 2 ай бұрын

bro i understood this line "you can inherit but you can't override . but i didn't get this line "you can run but you can't hide ??? what's meaning of hide here ?? can you explain me ??

@rajendrabrahmbhatt2585 Жыл бұрын

The more my College professor teaches me OOP the more I value you, you are a God for putting this material publicly, otherwise you could make this course paid and ask as much as you want to. This course is the best thing that ever happened to me. Please keep making videos. I will meet you some day if I get lucky enough.

@bhargavisingh2932 Жыл бұрын

Unparalleled!! This playlist is literally all we need.

@tusharlokhande4544 2 жыл бұрын

I was totally confused when my teachers at college teach me abstraction and encapsulation, now my concept about this topics is totally cleared. Thankyou ❤❤

@KunalKushwaha 2 жыл бұрын

Happy to help!

@syedusman3324 Жыл бұрын

@Jaivardhan Singh Im an employee and this is helping me , so you have the answer

@david99WTF 2 жыл бұрын

This course is awesome. I am so glad I found this channel when I was searching for OOP videos. Can't thank you enough for the content you are providing.

@kakumanusavithri8613 7 ай бұрын

This OOPS series is just amazing!!!!!❤

@gamingwithnsk3610 2 жыл бұрын

Everyone knows therotical explanation of oops concept but you are explaining the practical use and easy way of understanding about oops concepts. Thank you so much keep posting videos ☺️

@PavanKumar-tt6tw Жыл бұрын

Iam really grateful to you. I never thought understanding OOPS is this easy. Have no clue on what I would be doing without your videos.

@mohsinfarhat7385 Ай бұрын

The way in which you answer questions and explain complexity away by hammering questions about the concept is insanely amazing. Thank you, please don't stop posting videos!

@hariaseri6071 2 жыл бұрын

This is most awaited courses for me . Giving such kind of contents without any fee is seems impossible but dude you , you just made it possible bro . Thanks a lot bro .

@RaviSingh-ij1yk 2 жыл бұрын

when I started oops from part 1 I got confused between many things but when I reached at Oops part 3 my all the previous concepts and doubts get cleared. Thanks a lot.

@keshavtiwari1632 2 жыл бұрын

A really good thing about you teaching style and the content of this playlist is that, it is giving me the momentum to learn. In my experience, even a extensive and detailed tutorial and playlist can't help you, if you are not self motivated to see the entire thing. The first few videos of your playlist, and I was hooked to your playlist. So thankyou for such great content.

@tirakv Жыл бұрын

Let's go! third lesson COMPLETED! Thank you Kunal, you're an amazing teacher!

@kalpeshmali1476 2 жыл бұрын

I'm pretty sure i will be confident after watching your lectures 🔥 thanks man

@ishitasingh6014 2 жыл бұрын

The explanation of method overriding was phenomenal and the answer to the question why static methods cannot be overridden? This is because overriding is related to objects . Methods and variables when declared static have no relation with objects. So method overriding is not possible in static methods. Kudos to you and congratulations to us for receiving a great content.

@piyushsolanki9941 9 ай бұрын

This playlist is the best OOPs playlist i have ever seen , never thought of oops concepts like this.

@koustubhpal9366 Жыл бұрын

Thank you, Kunal, for teaching all these concepts in such a simplified manner.

@zulfiqaribraheem7175 2 жыл бұрын

A message of appreciation from otherside of border. Keep teaching, keep shining and keep spreading love

@KunalKushwaha 2 жыл бұрын

Thanks a ton

@aritrachatterjee147 2 жыл бұрын

Finally after a long wait , but the wait seems like worthy after seeing the video quality ❤️

@pjitender5535 9 ай бұрын

Thank you for giving us the best experience in OOPS and keeping this playlist free.

@PradeepYadav-fg2yg 2 жыл бұрын

2:11 am in the morning still binge watching the playlist and tweeting😂❤️

@reekdevray4776 2 жыл бұрын

Hey Kunal, can you make a video on how you study a topic? Like something that you absolutely don't have any idea about as a beginner - how do you go on about learning it? This is just something that I've been curious about since a while because your explanations are so to-the-point and clear to understand.

@sidkumthekar4614 2 жыл бұрын

really enjoying learning object oriented programming with you !

@Lukas-mq9em Жыл бұрын

Thank you so much for this series Kunal. I'm about to start my CS Degree and this Series is helping a lot to get the basics together!

@mdashfaquemarch 2 жыл бұрын

Thanks for this amazing course ❤️

@akshaytakrani6886 2 жыл бұрын

Each and every doubt that I had previously in OOP has been cleared after watching this video. Literally explained everything in such a simple manner. More power to you Kunal ❤️ P.S. - You can run but you can't hide, you can inherit but you can't override ( Static methods )

@KunalKushwaha 2 жыл бұрын

Glad it helped!

@saikishoremanthri5158 2 жыл бұрын

@akshay takrani hey can you tell me, Is this OOP only for Java or c++ programmers also wacth this ?

@venkatasriharsha4227 2 жыл бұрын

@@saikishoremanthri5158 concept is same for any OOPL

@saikishoremanthri5158 2 жыл бұрын

@@venkatasriharsha4227 😊thanks

@saikishoremanthri5158 2 жыл бұрын

@@venkatasriharsha4227 🤔is DSA is also same for all languages,( like C++ and java)

@kameshsingh9402 2 жыл бұрын

Your youtube channel is goldmine for me and also your teaching ability is best brother. No other paid course's are near to this tutorial of oop's concept.

@hridyeshhh 2 жыл бұрын

I used it to revise my concepts but I ended up learning more than what I knew before, thank you Kunal sir :)

@vineethkalewar1133 9 ай бұрын

this might the first time i completely understood the 4 basic principles of OOPS. Great video

@KunalKushwaha 9 ай бұрын

Glad you liked it!

@yashkoolwal196 2 жыл бұрын

this time also worth watching the whole video. Also the videos are so interesting feels like story telling and boom you've understood the whole concept

@rambabupatidar3092 Жыл бұрын

Really the best videos of the OOPS. not a paid course can come closer to it. more power to you kunal.

@aditya__exe 2 жыл бұрын

Loved the video! Starting from the very basics and taking it to advanced, you've covered everything.

@sheshankmahipal9970 2 жыл бұрын

This video made my concepts crystal clear. Keep up the good work bro!👏

@KunalKushwaha 2 жыл бұрын

Glad it helped!

@Amit-zu9id 9 ай бұрын

This type of playlist is really a game changer for placement journey of every student.. keep it up!! and thanks for this 👍😊

@mohdkaif4226 3 ай бұрын

one of the best java dsa course 😁😁 Each and every small topic cover in depth and i really love it😍

@sairamkurmadasu9360 8 ай бұрын

After watching kunals OOP explanation, no fear at all. Really helpful and you covered literally all the concepts. In fact more than anything. Thank you so much for making and coming up with such amazing content. No1 channel for learning DSA Java.

@anutharak3766 2 жыл бұрын

Great lecture Explanation of polymorphism & Encapsulation was really awesome 👍❤️ Thank you Kunal

@yeswanthh5068 Жыл бұрын

Your style of making hours of content in one video is what I really really like plss keep it up🙂🙂🙂🙂

@thanujanandaraj7424 2 жыл бұрын

Holy moly. I felt really hard to grasp knowledge on OOP programming but after watching your playlist I now understand the whole OOP concepts. I do have a couple of other doubts(like small doubts) but as I code more and more I will eventually learn more. Thank you so much for your help. God bless ya and keep up the good work bro : ).

@ropurifiedwater 2 жыл бұрын

Really happy that i was able to watch the complete video and get to know so many things from you, i cannot thank you enough for making such great videos for the community kunal bhaiya!! so thank you once again :)

@vanshjain5960 Жыл бұрын

You can run but can't hide -- -- you can Inherit but Doesn't Override (*Static Functions) Great Lecture Kunal

@crispyclips2916 2 жыл бұрын

"You can run but you can't hide, You can inherit but you can't override" - Kunal kushwaha Ye sahi tha guru

@sadhnasuman941 Жыл бұрын

Can't thank you enough for clearing concepts by going in such minute details...you are a saviour!!❤🤘

@notknowthething 2 жыл бұрын

Kunal Kushwaha has brought another great content. Thanks for this. Object Oriented Programming

@gourimmenon2726 2 жыл бұрын

"You can inherit, but you cannot override" 🧘🏾‍♂️

@Window2015 7 ай бұрын

Personal timestamp: Day 1) 2:26 Day 2) 48:00 Day 3) 2:12:51

@GouravKumar-ep3hr 10 ай бұрын

Love this whole DSA Series, brilliant level of explanation , just astonishing !!!!!😱

@himanshuchoudhary2514 2 ай бұрын

Literally Kunal i don't have words the way you teach its just amazing fun we are not studying we are enjoying

@raktimghosal4562 2 жыл бұрын

I think I could teach my teacher object oriented programming in a higher dimension than what they know of. Keep up the Good Deeds. 🔥❤️🔥

@KunalKushwaha 2 жыл бұрын

Wow, thanks

@ankitshaw_3060 2 жыл бұрын

Hey , kunal first of all thanks for such an amazing course ...but @ 1:21:11 you said that we can do method overloading by changing the return type also...but when I was trying out it on my laptop it was showing error then I checked it on the Google and found out that we in java , method overloading is not possible by changing the return type of method only ,so I just wanted to correct this point .

@piyushbhatia5374 Жыл бұрын

yes , i am facing the same issue regarding the method overloading . @Kunal Kushwaha

@shafaq-here 2 жыл бұрын

Very Informative, I got to understand the difference between Abstraction and Encapsulation, Kunal really makes it simple to understand. It is very uncommon to see somone explaining difficult concepts with so simple examples. Respect.

@velammallakshmi3891 2 жыл бұрын

Have never been in mindset that "oops" is so easy to understand and learn.Thanks man❤️

@salt234 Ай бұрын

Back here after a second failed interview...

@salt234 21 күн бұрын

third too..

@aniketpatil7960 16 күн бұрын

@@salt234 Try try

@kanishkaakarthigayan8376 15 күн бұрын

@@salt234hii..same here

@nikhilsoni272 2 жыл бұрын

He's keeping SQUID GAME in mind while explaining polymorphism (Shapes are triangle, circle and square only). lol🤪

@VedDeep1 11 ай бұрын

Thank you for this wonderful playlist and Thank you for keeping this playlist free.

@Dancingdivaa695 Жыл бұрын

Best Explanation on difference between Abstraction and Encapsulation I have ever seen, Thanks Kunal!

@DeepaKGuptA-rm9wx 10 ай бұрын

Your teaching style is awesome, you never leave a bit and put all the efforts so that anyone can understand the topic. There is a request, please make videos on "SYSTEM DESIGN PATTERNS" as well.

@mihai.samis.x 11 ай бұрын

We are lucky to have the most important concepts of OOP described to us in such an insightful way!

@amolajari Жыл бұрын

Really love your course, you are a savior.

@kishorekiu8327 7 ай бұрын

Watched many websites regarding OOP, certainly I could not get the clarity, started your playlist can't go off the topics from my mind. Worth watching it. really appreciable for giving us such a nice playlist.😍

@whatwhat3435 2 жыл бұрын

what i like about his videos is every time i say i knew this , he teaches new thing to me literally every time in every videos

@user-db9dl7uf2j Жыл бұрын

I have never seen someone explain much better than u bro u rocked it❤❤

@Kapil-1999 4 ай бұрын

Best Explanation of OOPs concepts available on KZfaq is this video. Actually I know the concepts prior to watching this, but it has made my understanding much more strong. Really liked the way he explains. 🔥🔥🔥

@pronitwilson7777 Жыл бұрын

loved this video Kunal...Day by day my knowledge is increasing by seeing your videos...thanks for that...

@vipulbalina6153 Жыл бұрын

I am loving this playlist. It is the best java course online !

@meetpatel7153 2 жыл бұрын

You can binge watch this series. Great work and thanks.

@ajaysinghshakya8521 10 ай бұрын

I found your OOPS series very helpul to understood oops concepts, Polymorphysm & inhertance is explain in detail . Love the way you teache oops. than you so much for creating such valuable videos to enlight the CS students

@afridahamed3343 Жыл бұрын

Explanation is on a different level 🔥 Thank you Kunal !

@shanmukhachakrapani2433 Жыл бұрын

Way of teaching is awesome. Undoubtedly i can tell you that you revolutionized java through this playlist.Kudos.

@sharathlingam3444 Жыл бұрын

I started to fell in love with this course, I am in love with this course, I will love this course. Thank you so much for this Kunal.💥💥💥

@nishanthbnish Жыл бұрын

This Lecture is fantastic. Don't hesitate; just do it.

@rohitsharma-xt8qe 10 ай бұрын

That was something seriously awesome content on OOP, Thank you so much ♥

@ultron1060 Жыл бұрын

thanks for explaining these concepts without technical jargon and using simple language . it makes the concepts cystal clear .

@PawanKumar-jk1yy Жыл бұрын

I knew about all these topics but still i watch because kunal always gives some beautiful insights !!

@atikkhochikar_5352 9 ай бұрын

Man ,this is Pure Knowledge

@saurabhpatil4746 2 жыл бұрын

I never thought these inheritance and polymorphism concept would be that easy to understand . great work Kunal !!!

@KunalKushwaha 2 жыл бұрын

You’re welcome

@ridoychandradey8337 Жыл бұрын

I have learned so many things about Inheritance from this video. It's really help me a lot.

@samruddhighodake223 2 жыл бұрын

Each and every line was helpful. Thanks for this amazing course.

@codeRajeshPal 11 ай бұрын

Loved the explanation kunal you teaches with the energy, clarity and confidence that we don't forget what we learn

@mohammadmujtaba2151 Жыл бұрын

Very nicely explained Kunal ! . The video was very in depth + it made me always wanting for more whenever you finished a particular topic ! Keep up the good work !.