If you’re new to programming but want a career in tech, I HIGHLY RECOMMEND applying to one of Springboard’s online coding bootcamps (use code ALEXLEE for $1,000 off): bit.ly/3HX970h

1:35 Polymorphism 2:20 Overloading a method 2:26 Overriding a method 3:52 Inheritance 4:37 Encapsulation (getters/setters) 6:54 Interfaces 8:40 Abstraction Thanks for the excellent tutorial!

Entire semester in 10min, very impressive bro

This guy teached me Java OOP in 10 min while my professor took 4 months just to confuse me.

I'm a HS Computer Science teacher. I bow to you and recommend you to ALL my students. I'm coming to you to learn and help me clarify what I'm teaching! :)

“They throw 15 letter words at you you don’t understand” 2 seconds later: POLYMORPHISM Just kidding.. love the videos

HAHAHA WHAT A TIMING DUDE we literally just had a lecture about OOP and I wanted to watch some of your vids to make sure I understood everything :D

It’s been a year since I’ve had to take a programming course so this was a great refresher

damn this 10 minute video is more useful than those 2 hour tutorials

He actually taught OOP in 10mins. OMG MOTHER OF CHRIST

this man deserves my college tuition

"Universities hate him for teaching one semester in 10 minutes." lol thank you so much for this!

Bravo and kudos to you, sir Alex! I'm just starting my new semester and had to refresh OOP and learn Java at the same time, and you taught all of this under 10 minutes! I'm sharing this with my entire class. Bravo Alex! 👏

This is the greatest Java OOP tutorial of all time. You've managed to break things down in such an understandable way!!! My prof has a Ph.D from MIT, and he can't teach me this stuff!! Ur WAYYY better than him at this. Thank you so much!!

Wish I had such a tidy and quick explanation on hand when I was first learning Java. Great stuff.

wow, this is a great overview. i have two interviews this week for software engineer positions (finishing bootcamp in 13 days) and i really felt overwhelmed reviewing so much material. this was super concise and helped clear up a couple concepts i was still having a little trouble talking about. thank you!

These “in 10 min” and “in 14 min” videos are great reviews for someone who knows some Java but took a semester off. Thanks for keeping it simple, dude.

Nice, a compact tutorial with no going off on a tangent for 10 minutes every 5 minutes but just stays focussed on the subject. Very good video. 👍👍👍

holy shit dude... i always struggled trying to figure out OOP concepts but these explanations are really good! it all seems a lot easier now! thanks!

What a great tutorial man, this will help me in my OOP course more than my class lectures!

Crystal clear and easy example . Precisely on point , nothing extra .

This was very concise and well explained. I learned OOP and did a lot of projects/homeworks earlier this year in a class and I always tell people "any concept, specifically in CS, is simplifiable", but school doesn't do an amazing job at concise. I had a wonderful professor for OOP but in general teachers make things more complex and drag on lessons. 2 things that would have perfected this video: 1 if you had prepared a full class with variables and functions, like a full 40 line class with edge case checking for constructors and setters. 2 split the screen between "class containing main method where objects r created" and "actual class/blueprint of object" that way people can visualize things much better. for a quick intro to OOP, this was very good. even for a review for test.

Hey Alex, this video was very well explained. I feel like I learned a lot in a very short amount of time. Keep up the great work. I'm a new subscriber based off of this video alone.

This is SUPER CLEAR ! This made everything much easy to grab !

Mate, you are so incredibly awesome 🤩 I know, I repeat my self in like every comment I leave under your videos, but this is only due I can not find any better words to describe how infinitely good you are explaining stuff! Thank you so so much for your videos ❤️‍🔥

you just made my life easier. God! I should be thanking youtube for this video suggestion! I am a teacher and want to teach my students java. I will add your videos on our book as reference ;)

Helped me understand Java for my new job in 10 minutes. Many thanks!

I really cannot be more thankful! You made everything so clear, thanks!

Thank you I am currently studying Computer Science at University and I have learned so much from this channel what my lecturers cannot seem to explain, keep it up.

so annoying how these concepts are made to be so confusing in school / job interviews but they're so basic when you're actually coding them.. thanks for showing us this!

I wish every programming tutorial video was that simple and quick.

Our Java class went from basic loops straight into OOP without even mentioning what a method is, I guess it's lucky I have some experience with it already. Great video!

Great video! Just want to add that getter and setter methods make getting and setting variables easier for users, because the original developer(you) is(are) able to retrieve and replace the variable in different ways depending on what the user submits as a parameter to each method. Mainly, if the original dev(you) wants(want) to make sure users don't accidentally set a variable to certain values down the line, getters and setter methods can perform checks and do much more than simply *get* and *set* the variable in question when the user calls them

Wowowowowowowwww!!!! You're the god of OOPs tutorials🎉

Thanks for existing ALEX. you saved me! I was never so confident in OOP and kinda mugged it up. You've made coding fun for me!

I actually "know" about OOP but i really enjoyed this video. Good job man!

you are LITERALLY THE BEST Java teacher ever, I finally understood Arrays, now I need to know about Objects, Constructors, and Inheritance I think

And I oop... Sorry I'll see myself out

Alex, you’re the teacher we always needed! 👏🏽

I've been studying from my books for the past few days, everything was made so unclear. You just cleared everything up in 10 minutes, awesome video thanks!

This is a very good guidance for intermediate learner, but not absolute beginner. My java professor only talks about how to use different kind of method to achieve a goal, but never tell me the concept of a class, a method, or how to relate them as a whole.

Watching this to revise before I tutor. I wish I had watched this back when I was doing this course. Would have saved me so much time.

I've already a few years of experience with Java but this is actually the best explanation of OOP that I ever found online.

This is fantastic! Clear and concise! Thanks bru!

Love it! I literally just learned C++ and with your videos only I understand everything they should teach at school!

please upload more videos about oop

If I spend too much time away from an OOP language I forget what these words mean. Excellent refresher.

Man... this explains my whole semester... and this video helped me more than my school. Thanks man you earned a new subscriber.

You might honestly be the goat

Thank you Alex Lee. You make learning fun and Understanding .

Just WOW! I've been front end coding for years. Found a new passion in OOP. You helped me a lot with this video. Got a new sub 🎉

Damn if i had only seen this before this semester started.... i would've saved myself a lot of stress

Its amazing that while im sick and not really even able to focus you still made me understand better than my professor or my 250 book

I alr learned these concepts in college, but your explanations simplified it, making it easy to understand, thank you!

hey alex my uni suggested 18 videos for each topic you explained in this video,and i am glad i chose to watch your video first before getting confused watching other videos.thank you.

Great video as usually. Thx a lot. Even if I know that already it is always a pleasure to watch some new stuff from you.

Thank you so much man! I always struggled to get this OOP stuff. But then your video comes and now OOP it's all magically clear to me. Keep up the awesome work!!

this guys an actual genius

ok, i love a youtube channel, dude, continue with this great work.

This has literally wrapped up all those stories i get from my OOP lecturer, Thanks Alex Lee!

Seriously man you are amazing i never understand oop before. But after watching this video i understand all the basic concept of oop. Thankyou

I’m an AP CSA student in high school and your videos are beyond helpful for preparing for my upcoming AP exam. Thank you so much!

stupid question... whats the point of doing Example e1 = new Example1(); srry, im trying to get used to everything and I ask a lot of questions tht probably dont need to be aked

I luv ur videos. I knew the channel before my brother

Awesome! Thank you so much for this short briefing! :)

Modularity, Data Abstruction, Message Passing are left out and GC, these are part of OOP as well.

Thanks...now I can feel better to take my test tonight. Love this channel.

Incredible comprimized and performant transferred knowledge. Well done bro.

your teaching style is so good. the basics even my professors couldnt really teach well in university. you taught in 10mins.

Dude you are good, keep working these things, don't give up

Thanks for the video, but maybe more explanation on why you would use these features would be great.

1:49 not exactly Polymorphism Polymorphism means you can look at a specific class from different forms (subclasses) it's method overloading, not polymorphism

It is amazing how he simplified it. I struggled with that topic for so long but honestly Alex is a living legend :D

Bro, you just salvaged my entire career! bless!

Thanks, I just found anything I wanted about OOP in java!

Dear Alex , could you please make a thorough video on 2D array as it is quite confusing to solve problems on them and i get stuck in it. My second request is if you can help in Algorithms as well which is aked in interviews as it is bit tricky and how we can use it to make programming easy. Thankyou for your videos and you are an amazing mentor.

Never been this clear on oop after watching your video. Thanks :)

Bro you actually did it. No clickbait what so ever

My teacher taught us OOP in 5 days, this guy taught me in 1 video!

This seriously was the first time these all made perfect sense to me. Thank you

This video was more useful than I initially thought. THANKS!!!

Super Awesome. To the point and simple.

I spent 16 hours on a basic object oriented java project, wish I had seen this.

Alex, thank you so much for making Java videos. You really helped me get a Job!!! 😇😊😊😊 You are very Appreciated ❤

Thanks for such a quick, concise video. This was a wonderful explanation.

This video literally saved me from my interview. You see im more of an output guy and I have problems with definitions when interviewers asked me about definitions of something, having trouble on finding the right terms to describe it that sometime I want to "just give me a computer and ill show it to you". Thanks!

Thanks man, helps a lot with the university!

amazingly explained. Thank you!

I'm in a coding Bootcamp right now and I just wanted to say, thank you for these videos because they're the only thing making me understand java.

wow I'm shock i really do understand it 😭. Thank youu, i thought i was going to study a day for dis

Thank you. The whole world should be explained with this philosophy.

Thanks God (extends Alex) that I found this channel. I have been watching these videos for the past few weeks, and they are one of a very few ways for me to understand the JAVA concepts taught by our online tutor. Many thanks and keep going!!

It's a really good video to recover my knowledge of Java

This was SO helpful!!!! Thank you so much :)

Wow that's impressive ! Our mentor spent 2 weeks explaining Oop and didn't get it . watched ur vedeo and now makes sense .

Thank you that put a lot of stuff into perspective.

Huh, that's what I have to learn for school. Thanks

Amazing explanation! So clear and understandable! Great job!

Very good video :) Sort and clear! --> Learned OOP with C# and now learning Java, looking forward for it :D

bruhh I just learnt something we've been doing in class for the past 8 months in TEN MINUTES. YOU ARE A MAGICIAN.