Notes: Four OOP principles: Encapsulation: * Refers to bundling data with methods that can operate on that data within a class. * It’s the idea of hiding data within a class, preventing anything outside that class directly interacting with it. * Keeps the programmer in control of access to data. * Prevents the programmer from ending up in any strange or unwanted states. Abstraction: * Refers to the idea to only showing essential details and keeping everything else hidden. * The classes you create should act like your car. Users of your classes should not worry about the inner details of those classes. * This is very important when working on your program incrementally. Inheritance: * Is the principle that allows classes to derive from other classes. Polymorphism: * Describes methods that are able to take on many forms. * Allows methods to take on many different forms. * Be sure that you are calling the correct form of the method. * There are two types of polymorphism: ** Dynamic polymorphism: - Occurs during the runtime of the program. - Describes when a method signature is in both subclass and a superclass. - The methods share the same name but have different implementation. - The implementation of the subclass that the object is an instance of overrides that of the superclass. ** Static polymorphism: - Occurs during compile-time rather than during runtime. - Refers to when multiply methods with the same name but different arguments are defined in the same class. - The parameters are different type or taken in different order. - This is known as method overloading.

@saranyasuresh527

2 жыл бұрын

Thank you ❤

@sarimdev

2 жыл бұрын

Thank You : )

@micksail3341

Жыл бұрын

Ok, Good Summary of OOP. Very Good Notes.

@adiflorense1477

Жыл бұрын

Noted

@udayy4448

Жыл бұрын

brudda take this like

Resume: 1) Encapsulation ----> Getters and setters 2) Abstraction --> We care about Interface. Not the implementation behind the hood. 3) Inheritance --> Extending classes... Access modifiers: public, private, modifier 4) Polymorphism --> Interface / Implements in Java ... Same methods' name, but different implementations of methods.

@adipurnomo5683

2 жыл бұрын

Inside polymorphism: overriding and overloading, right

@janjeromesoriano1182

2 жыл бұрын

@@adipurnomo5683 yes

@janjeromesoriano1182

2 жыл бұрын

@Hector Fontanez I agree

@ysammo214

2 жыл бұрын

Thankyou

@ifeanyichukwuazuka3184

9 ай бұрын

Q

Newbies please listen before you end up like me! If the only language you know is Python, I urge you to learn C#, C++ or Java to actually understand how to implement this practically. Python is a great language but it abstracts a lot of important OOP concepts and it makes it extremely hard for beginners to understand why OOP is important. OOP is all about defining data before functionally, and python is very nebulous about its data.

@experiment0003

2 жыл бұрын

I agree. Going from Python to C++ and Java wasn't as smooth as I thought. Now, I don't see myself going back to Python (unless, of course, for occasional data science with numpy/pandas). Python => print("Hello World!"). Java ==> package > class > public static void > System out > ("Hello World!")

@rubayetalam8759

2 жыл бұрын

is it important for data science or machine Learning?

@potatoes5829

2 жыл бұрын

Good thing I started with c++

@MarcusHCrawford

7 ай бұрын

@@experiment0003 Java: import Java.util.Scanner Class HeyThere { Public static void main(String[] args){ Scanner userIn = new.Scanner(System.in); String name = userIn.nextLine(); System.out.println(“Hello “ + name); } } Python: name = input(“Enter name:”) Print(f”Hey {name}) And don’t even get me started about how Java is case sensitive, that part drives me nuts.

@experiment0003

7 ай бұрын

@@MarcusHCrawford I swear 🤣

I've been working for 6 years in the market and I can say no one has explained so simply as you did. kudos

@valdemarvreeman8231

3 жыл бұрын

I wonder why you haven't learned OOP in the 6 years you been in the market...

@ayazulhaq4727

3 жыл бұрын

@@valdemarvreeman8231 Who said anything about learning? I was talking about the way he explained. There is a difference, isn't it?

@sultanakalsekar6800

3 жыл бұрын

@@ayazulhaq4727 absolutely

@kientran4818

2 жыл бұрын

@@ayazulhaq4727 apparently he has issues with his reading skill.

@maliha.ishtiaq

2 жыл бұрын

@@kientran4818 hahahaha. savage reply...

This was a great refresher for me. I like that the instructor speaks slowly so I can increase the video speed through sections I'm more familiar with and watch at normal speed when the information is a bit more unclear. Thanks freeCodeCamp!

It's my first time actually watching a half an hour tutorial from start to end without closing youtube. Thanks a lot!

Thank you for sharing this video. I have watched multiple videos on this topic on KZread and yours is hands down the best I have seen. I just watched it the third time and and comfortable with all the concepts.

Amazing descriptions of the 4 main principles of OOP. Thank you!

This is excellent. My only suggestion would be to continue the chess example on through the whole video. Using the chess game analogy really helped me understand OO.

The examples used are very straightforward and every concept is explained well. I haven't watched any video on OOP before, but this one will help me a lot to make better code. 10/10 video!

I really enjoy the use of the chess example. I think the chess example makes it easy to understand the kinds of constraints that are required for each object and method, as well as why those constraints are necessary for the game of chess to work properly. Great video!

I tried to learn this material from a collect instructor and several textbooks in the past three years, but you explain cover this topic in a very clear, thorough, and concise manner that is easy to understand. I am so grateful to you for this presentation. You should seriously consider writing textbooks-I would be súper interested in reading them!

@voltaire5427

2 жыл бұрын

I'm only about 20% of the way through my first programing course and understood about 90% of the lecture. Very well explained even to a layman.

I've been working for 13 years in the industry and have studied many courses, and this is still probably the best description I have ever heard! Thank you

Wow. Thank you for speaking so calmly and clearly! Big plus.

Wow, just wow. I already have a bit of experience with OOP, this video helps me to refresh my understanding of it in just 30 minutes. This is great, thanks for making this!

Just brilliant, you made it really simple. I have tried so hard to understand these concepts and now your explanations gave me a better understanding. Thank you.

My teacher took 2 months to explain all of this OOP main principles.

@aammssaamm

3 жыл бұрын

This guy does not understand them either. He gives a wrong example.

@abhishekjoshi4091

3 жыл бұрын

@@aammssaamm stop hating and point out what he taught wrong

@aammssaamm

3 жыл бұрын

@@abhishekjoshi4091 You may want to learn some good manners first.

@Doschia

3 жыл бұрын

@@aammssaamm So he has no mannes because he says "stop hating"? Interesting.

@aammssaamm

3 жыл бұрын

@@Doschia you may want to get the same.

Thank you so much for explaining!! It was very clear for me. I hope there will be a similar introduction for Functional programming, and also the pros and cons between those 2 styles of programming.

Not being a professional, I always had a vague idea what OOP meant but would have been hard pressed to explain it to anyone. Thanks to your excellent video I finally had the "aha-moment". Thanks very much, Steven!

Extremely well-explained, I would love to watch more video like this one!

I am having a job interview after 15 min.. good short refresh.. wish me luck Update: I got the job ✌😃

@anjanaouseph4605

2 жыл бұрын

Hope it went fine!

@ashrafbeshtawi3556

2 жыл бұрын

@@anjanaouseph4605 it was great. I will get the final response in 1 week😃

@anjanaouseph4605

2 жыл бұрын

@@ashrafbeshtawi3556 All the best!

@SahPhoenix

2 жыл бұрын

Hope it went well!

@bruhman4939

2 жыл бұрын

Hope you got a good response!

This is by far best explanation of OOP I have ever heard, Thanks :)

This is an exceptionally clear explanation of OOP. Well done!

The examples r super clear. Absolutely recommended to watch!

Such a good video!!! Helped me understand concepts that I'd tried to fully understand before, but couldn't! Thanks!

Thank you so much for this course! It's so pleasing to listen to :)

Thank you for sharing your creative way of explaining what OOP is. Awesome. helps me to become a better programmer

Loved the content. Subscribed. Hope the channel grows fast.

This is great content! Clear and great density. Thank you!

I can say you are one of the best tutor I have met, u take your time to explain, I also watched you tutorial on introduction to programming, it was 🤯. Well done 👍.

This is the best explanation I've been able to find. I was creating my own first OOP application and was struggling to see the difference between a class and an object. This explanation via chess makes it so obvious that I wonder why I didn't get it in the first place. It's al about the chess example and the way you explain it. You have great presentation and tutor skills. Now I just need to start my application from scratch again. Please could you also explain the several UML diagrams based on this chess example? That would be a great way to show everyone how you can design your application with OOP in mind before even starting to code. It would have prevented me from making a lot of beginners and obvious mistakes.

@tiktokhits7208

2 жыл бұрын

Yeah thts true

Thank you for the informative video. It is a nice summary kept in 30 minutes with meaningful examples.

I thought I would be studying the whole weekend for that Java class in which I'm totally lost... but in 30min at 1.25 speed I've gotten further than in several hours of regular lecture. Thank you for your clear explanation.

Wow! This is educational video making at it's finest. Near perfection. I'm sure many viewers have tried to get these concepts clear elsewhere, and will finally achieve clarity here, like I am doing now after code school plus 2 years working in the field.

@TheTrace8

3 жыл бұрын

But as a guy who DOES appreciate the layer underneath the abstraction of a car, I'll add humorously: to think a sportscar has twice the fuel efficiency (using half the gas) of whatever a normal car is, is unlikely. Also, wanting to drive it a "double" of miles, instead of just an int... That's gotta be a very, very, very, very well made car. :) But, still, great video.

please do a more advanced one! loved this

I'm a complete beginner to programming and this is so well explained that even a illiterate like me can understand.

Abstraction means, focusing only on that which is relevant to your application, when modelling your objects/classes. For example, the attributes and behaviour you would assign to a Person object would be different for a banking.vs a fitness app.

Amazing video! Thanks, it really helped me as a total newbie to OOP.

I’m just starting to learn programming. This is very helpful and the best explanation I’ve seen for a newbie.

@splashbruda8211

2 жыл бұрын

How's it going so far? I am starting myself, curious how much you advanced in a year.

@i_am_dumb1070

Жыл бұрын

@@splashbruda8211 what about you how much have you improved?

@shivaayshorts000

9 ай бұрын

​@@splashbruda8211have u been pro now, or still at learning phase?

@gdplentie3

3 ай бұрын

​​@@i_am_dumb1070and how about you?

I like how he use game examples to implement the 4 main principles of oop, it keeps me interested.

Excellent explanation! Thank you!

Simple and straight to the point.

I love Your voice tone and method of teaching,thank you.

This is a complex foundational subject that clearly explaining the principles of how it works. 😎 cool! Thanks

Good refreshment here! Thank you a lot!

Thank you for explaining the concept!

Thank you for making this detailed video.

This is the most useful and informative programming video I've ever watched. Thank you so much!

This was really helpful. It made me understand Encapsulation, Abstraction, Inheritance, and Polymorphism. worth my time

@schmetterling4477

2 жыл бұрын

Yes, but you still don't know how to use any of that to write better software. Maybe you think you do, but that only makes you more dangerous, not more professional.

Very good overview and intro to the subject.

Best video ive seen in my life. Thanks for saving my future

Really clear explanation. Thankyou!

Thanks for this. I'm taking this class next semester. Wish me luck

By far the best video on oops. Exactly what someone needs.

@McFlashh

6 ай бұрын

Could be better if they implemented the examples in code.

If I'd describe OOP, it would be convenient interaction/communication. Its like two people having a great conversation that would result in a mutual benefit

@lepidoptera9337

Жыл бұрын

Yeah, that is not what is is, but keep smoking. ;-)

@TonyTigerTonyTiger

Жыл бұрын

@@lepidoptera9337 Oh, so you just trolling all over the place in the comments to this video. What a sad, little person you are.

@SweepAndZone

4 ай бұрын

Lmfaooo ​@@lepidoptera9337

*Was watching naruto then this video distracted me!*

@narc7885

3 жыл бұрын

U got ur priorities right!

@arjunbabu03

3 жыл бұрын

this is cap!

Great Video!!! Thanks for this tutorial!

The theoretical explanation was good to understand.

Thank you! Was a good refresher!

Even though I have learned these before, this one is a real gem.

Love this guy's content and presentations. More please

@aammssaamm

3 жыл бұрын

His approach is incorrect.

@mb98765

3 жыл бұрын

@@aammssaamm who hurt you

@aammssaamm

3 жыл бұрын

@@mb98765 oh, are you a harassment victim looking for your brothers in misfortune?

@psylocke1517

3 жыл бұрын

@@aammssaamm then correct him or gtfo

@aammssaamm

3 жыл бұрын

@@psylocke1517 You may want to get some good manners if you expect other people to cooperate.

Great explanation, thank you!

Thanks very much, extraordinary and very clear crash course

Nice, clear English content, many thanks.

Thanks. Very clear and concise.

Oh mah gah it was so beautiful 🤤 Thx fcc 🥺

Nice content ! Thanks for the inspiration

Great Work to keep up self-learners. Thank you 🙇

@aammssaamm

3 жыл бұрын

Actually it has really bad issues self-learners cannot identify.

@hexerei02021

3 жыл бұрын

@@aammssaamm Could you share some of those issues pls ?

@aammssaamm

3 жыл бұрын

@@hexerei02021 Already.

Thank you so much for sharing 🙌bro

Thanks, great explanation.

Thank you. Very well explained

great video! well explained.

this is very helpful. thank you!

This was a life save thank youuu!!

It really helped me a lot to understand this OOP topic Thankyou very much fcc.

Thank you for this refresher! The line between Encapsulation and Abstraction tends to blur in my mind

@AbhiKhatri

3 жыл бұрын

Think of encapsulation as grouping together and abstraction as hiding the inner workings. That worked for me.

@Twysthor

3 жыл бұрын

@@AbhiKhatri short and sweet! Thanks

@hardcrowley1549

2 күн бұрын

@@AbhiKhatri thank youuu

Excellent thanks.

Very useful. Criticism: sometimes you're referring to this object refers to this object and it became completely unclear in which direction interactions were happening.

Keep making such informative course

Thanks for explaining it!!!

That a semester course in 30 minutes. Thank you Freecodecamp!!!

The best of the best, Thank You!

thank you . . . much needed material . . . trans-language concepts

Great explaination!

So, structs' can be understood as more advanced arrays, because all the struct did was create an association between a key/value _vs._ index/value. the object is so crazy useful because of its ability to organize related data in a readable way. "position": 15

i liked learning both the intro to programming and this intro to OOP, it was hard for me though :)

The way I see it, Linux is written in C so it is procedural. The linux philosophy is everything is a text file. In contrast, OOP philosophy would be that everything is a spreadsheet.

@gareginasatryan6761

3 жыл бұрын

The kernel is organized in a OOP style though.

This is gold...Thank you

That was great. Thanks.

Thank you for helping me! Forever in debt!

BYE I DONT UNDERSTAND THE CHESS EXAMPLE 😭

Can we please have a PDF of this for quick read at later point of time

Simply Bravo

It was really clear explanation. Thanks for your work. It would be perfect to make sound also clear, but it's not so necessary ^_^

Cool explanation)) but what about aggregateon and composition?

Sir please make videos on computers and and its basics operation like conversion of binary and some basics like ram, ROM , etc things ,......please because of exam and because of the lockdown we are not able to attend the computer science lectures please make video sir...... Lots of love sir for helping in this lockdown.........

Nice video, thank you

Great video!

Is there a continuation video after this one? Great explanation🎉

Simple and clean, thank you.