Abstract Class In Java Tutorial #79

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  • Опубликовано: 23 ноя 2024

Комментарии • 904

  • @alexlorenlee
    @alexlorenlee  Год назад +9

    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

  • @DiabeticDebuff
    @DiabeticDebuff 4 года назад +1272

    dude you managed to do in 9 minutes what my professor couldn't do for a whole class: teach us about Abstract classes/methods. Thank you!!

  • @vpenywise
    @vpenywise 4 года назад +213

    That's like 200 pages summarised in 9 minutes, thank you!

    • @agrajyadav2951
      @agrajyadav2951 2 года назад +2

      TWO HUNDRED!!??

    • @vladthecoldone8804
      @vladthecoldone8804 2 года назад +1

      More like 20. His reasoning is not what it actually is, basically he says how he feels about it. Doesnt even explain when you should use A instead of B, that you can use extends and implements simultaneously and why is it useful etc. Like I said "more like 20" but I understand that hes dumbing it down so regulars can understand and that Im procrastinating and probably should be studying for exams lmao

    • @josephkreifelsii6596
      @josephkreifelsii6596 2 года назад

      @@vladthecoldone8804 More like 5. I've never seen a single Programming textbook take more than 5 pages to explain 1 thing

  • @lachlanstavrevski5255
    @lachlanstavrevski5255 4 года назад +158

    You should literally be teaching programing courses for universities. You explain everything so well!

    • @mmq6525
      @mmq6525 2 года назад +27

      he wouldnt be able to teach a 10+ week course, he'd have you ready for finals in 3 weeks

  • @ccacc_
    @ccacc_ 4 года назад +61

    love how every start of the video, you would be encouraging beginners like us that are in confusion state, that we will eventually understand it.

    • @Lydeliini
      @Lydeliini 3 года назад +3

      That's what got me hooked :P And he was right!

  • @atousamas7232
    @atousamas7232 4 года назад +27

    After a year of struggling to understand abstracts and interfaces,I just learned them right now in just 8 minutes.
    It was really really helpful,you explained it so simply and so good,thanks

  • @Chimeratech_O.D.
    @Chimeratech_O.D. Год назад +13

    Turned a massive chunk of my textbook into a bitesize lesson. Thanks a million, Alex.

  • @annahuggins6636
    @annahuggins6636 3 года назад +4

    I'm a student in college atm, we just got a major assignment over polymorphism and abstraction, and naturally, we barely covered this. I am super thankful for this video, it has been super helpful in explaining the differences between abstract classes and regular ones and I would not be able to understand abstraction so well without this video!

  • @SamiUllah-sh9rb
    @SamiUllah-sh9rb 5 лет назад +247

    I requested this video yesterday?
    You are so Quick and made this video.
    Love From Pakistan 🇵🇰 🇵🇰 🇵🇰....

    • @kannankichu1997
      @kannankichu1997 4 года назад +2

      How and where to request him?

    • @SamiUllah-sh9rb
      @SamiUllah-sh9rb 4 года назад +1

      @@kannankichu1997 survey and questions asked by alex in a post on RUclips.

    • @LT-pp2vr
      @LT-pp2vr 4 года назад +5

      Truly thankful from an initial programmer from Taiwan

    • @anshuman4873
      @anshuman4873 4 года назад +9

      Do people in Pakistan study too ?.. Amazed man...

    • @nyko1689
      @nyko1689 4 года назад +15

      @@anshuman4873 LOL, what makes you think they don't study? just curious.

  • @serdarekid
    @serdarekid 5 лет назад +86

    YESSS!!! Just what I needed and when. Thank you man, you're the best!

    • @bindus4943
      @bindus4943 4 года назад

      ruclips.net/video/98AAbox6ka8/видео.html

  • @seajay9711
    @seajay9711 3 года назад +3

    in less than 15 minutes this person just taught me abstract classes nad methods and polymorphism, something my college professor couldn't do in a month's worth of lectures. Major thanks from a panicking student in finals season!!

  • @XAyaDubX
    @XAyaDubX 4 года назад +12

    You're an absolutely amazing teacher. Thank you so much for making everything so simple. You communicate very efficiently.

  • @Sk8zOfficialMusic
    @Sk8zOfficialMusic Год назад +2

    You were able to explain something I'm learning in a coding bootcamp for over 2 days in 8 minutes. Thanx so much man.

  • @עדןמזור
    @עדןמזור 5 лет назад +46

    You always know *JUST* what I need!
    Did you create a program of mind reading?

  • @stefan8193
    @stefan8193 3 года назад

    Bro you are genius. You explain it in 10 minutes with simple words. Very understandable!!! You are the king.

  • @danielmagdziarz7440
    @danielmagdziarz7440 4 года назад +447

    Favorite line: "public void poop"

    • @vpenywise
      @vpenywise 4 года назад +33

      I couldn't get though how can a 'poop' be a 'void', when it most definitely 'returns' something :) I mean, you definitely see the result, right there! :)

    • @thedude4795
      @thedude4795 4 года назад +15

      I invested in stocks and my *final* *return* was *void.*
      *Silence. *

    • @adenosinetp10
      @adenosinetp10 4 года назад

      @@thedude4795 lol

    • @smellthel
      @smellthel 4 года назад +2

      @@vpenywise mind blown

    • @JohnDoe-cu6jv
      @JohnDoe-cu6jv 3 года назад +1

      "avoid" poop

  • @rashmibalasooriya8447
    @rashmibalasooriya8447 Месяц назад

    Dude you are the only person who could be able to make me understand... the whole class looked at me like an idiot after telling nonsenses about abstract, so called "teaching"!! Super thankful ❤

  • @Bryan_Salvador
    @Bryan_Salvador 4 года назад +10

    Pretty much everything I need to know condensed in

  • @WinOfficially
    @WinOfficially 2 года назад +1

    I am developer from 2 years and have been unable to understand abstraction. But now thanks to you I finally can. Love you man 👊😀

  • @abdulpangandaman
    @abdulpangandaman 5 лет назад +26

    After or during each of your video can you give us an assignment? Or some sort of activity that we need to answer/code.
    In that way, we will know the essence of your tutorial.

  • @kunpeng8646
    @kunpeng8646 4 года назад +1

    I am a new learner on programming and I am getting stuck on the abstract class concept, this video helped me a lot, I totally understood right now. The example of a dog, poop, made the complicated concept much easier to be got by new learners like me. Thanks, this is a pretty nice tutorial!

  • @kharlopena7512
    @kharlopena7512 2 года назад +3

    Thanks for this! My professor is great, but even she made this sound way more complex than it is. Your video was super helpful!

  • @minh-tamvo4608
    @minh-tamvo4608 Год назад

    Everytime something feels off or not all understood after class, I come to your videos and it sums up a 3h in 10 minutes.

  • @xenonnanon
    @xenonnanon 5 лет назад +4

    I have a Free Response quiz tomorrow, and you just helped me secure my A. Thank you very much, Alex! You have my sub!

  • @deli5777
    @deli5777 2 года назад

    Thanks for actually stating the difference! So many people will give characteristics without really defining what they're talking about.

  • @SuperMrHolmes
    @SuperMrHolmes 4 года назад +4

    This was extremely helpful. You are very talented at teaching and keeping it concise. Thank you!

  • @joeyjaehyeokkim5064
    @joeyjaehyeokkim5064 Год назад +1

    4 yers later, still helping students. You prob don't even realize how helpful these videos are fr

  • @harshshastri6099
    @harshshastri6099 3 года назад +4

    Hey Alex, you're doing a great job. It would be cool if you could cover how static methods are used in interfaces and abstract classes, and how variables cannot have abstract keyword in them.

  • @supriyajain7904
    @supriyajain7904 Год назад

    Very few can explain these very basic core concept of Oops with such clarity. Your basics are so so clear. Thanks

  • @Shaf23
    @Shaf23 5 лет назад +7

    Can you do a video where you explain all of your shortcuts? It would really help me save more time

  • @davidstrom1434
    @davidstrom1434 2 года назад +1

    You should teach in university. These are the best Java Videos i have seen! Thank you for saving my butt!!

  • @yaminchoudhury8732
    @yaminchoudhury8732 4 года назад +3

    Broskiii this was the best 9 minutes of my life, I love you thank you so much. LIFE SAVER

  • @uoriwoh
    @uoriwoh 3 года назад

    Lecturers here spend hours explaining this simple concept and failing. 6 minutes of this 8 minute video clarified it. Thank you so much.

  • @nigelburke7391
    @nigelburke7391 4 года назад +17

    6:10 lol, literally answered my question as it popped into my head

  • @amirkamalian4848
    @amirkamalian4848 2 года назад +1

    i have BEEN searching for this topic for a long time, i'm 100% sure this is the best video in the internet to understand abstract and interface, Thank you ALOT !

  • @goldengunist
    @goldengunist 5 лет назад +41

    ALEX!! Thank You for making all these Java videos!! Seriously think that you deserve at least 100K subs for the simple and clear explanations! PLUS it helps that your super handsome and cute

  • @adamameen5
    @adamameen5 2 года назад +1

    You are amazing. Such clear explanation. Learnt within 9 minutes that could not be learnt for 9 years.

  • @ghostropes
    @ghostropes 5 лет назад +9

    Making and implementation of a GUI currently what I'm struggling with right now also do you use the java library site religiously or not that often?

  • @harshdeepsingh6768
    @harshdeepsingh6768 4 года назад

    Nice work brother. Other people made stupid tables and listed the differences. You explained all in 9 minutes. Respect

  • @aishwaryamurugappan5138
    @aishwaryamurugappan5138 5 лет назад +3

    Alex,Thanks a lot,for this clear and simple explanation with cute examples, this is very helpful,and i'd also wish if you could make videos like, kinda creating simple games with java or a demo on some project with java,on application basis of these concepts.. :)

  • @TheEchomaker
    @TheEchomaker 2 года назад +1

    thank you so much for clarifying the differences between abstract classes and interfaces!

  • @Mangadrawings123
    @Mangadrawings123 4 года назад +24

    You may or may not have just saved me from failing my exam

    • @khanf13
      @khanf13 3 года назад +5

      howd u do

    • @Salio_Mendes
      @Salio_Mendes 3 года назад +1

      I hope u did well, I got my exams this week...help!

  • @futgaming17
    @futgaming17 3 года назад

    This is the simplest yet best explanation on abstract classes and methods i have ever encountered. Kudos Alex.

  • @kaushiksenthilkumar682
    @kaushiksenthilkumar682 4 года назад +42

    "Every dog poop a little differently ", I laughed for almost 3 minutes lol

  • @noei.quezadatorres3920
    @noei.quezadatorres3920 2 года назад +1

    Dude you're a gooood, i came here looking for the definition of abstract, and ended having the knowledge of implements, interface and the abstract itself, gooood bro

  • @myanch200
    @myanch200 5 лет назад +5

    Could you do some interesting projects with java

  • @Cheyenne9663
    @Cheyenne9663 2 года назад

    If have watched some of your previous videos and they were explained too fast for my small brain. This video was laid out nicely. Went slow enough for the the idea to sink in, you kept it simple and clear. Thank you!!

  • @kalaiselvan539
    @kalaiselvan539 5 лет назад +12

    Is this the only difference between abstract and interface .. or something yet to add

    • @jameslowell9656
      @jameslowell9656 4 года назад +11

      You can implement multiple interfaces but you can only extend one class regardless of whether it is abstract or not.

  • @Two_Wheel_Yeehaw
    @Two_Wheel_Yeehaw Год назад

    Dude I sat through a 2 hour lecture on abstract methods and had no idea what my professor was talking about.... amazing what an 8 min video of quality explaining can do.

  • @marciano2293
    @marciano2293 5 лет назад +5

    Can you make a tutorial about java GUI using javaFX ?

  • @leilas6325
    @leilas6325 4 месяца назад

    im so thankful i found this video before my OOP exam, thanks king

  • @ovonickalicious
    @ovonickalicious 5 лет назад

    I have an exam coming up and watching your videos makes everything so simple to understand. THANK YOU SOOO MUCH !!!!!!!!

  • @karsten7601
    @karsten7601 4 года назад

    I have been a full stack developer for a year. I love watching these interviews as I prep for interviews in the future. Love it

  • @DANNYFIGDESIGNS
    @DANNYFIGDESIGNS 3 года назад +2

    Brother. I love that you're pursuing your dreams and I know you'll do well. I will miss your Java vids. They have saved me. I don't have a good teacher for my college course. 😳Maybe you'll pop up every now and then and throw us Java people some love/bones. Regardless, thank you for being an encouragement and a big help. May you have continued success. 🤠

  • @musguz
    @musguz 4 года назад

    You are clearifying everything in an easy way. That's the difference and appreciation for all of us.

  • @praneethchakri7052
    @praneethchakri7052 2 года назад +1

    Dude,
    Thank you so much for explaining us in the most layman way as possible.
    Have always been intimidated to understand or get the right picture of these terms since "years". You just made my java fears fly away by explaining these basics in 10 mins each. Thanks again.!!

  • @Dilly9124
    @Dilly9124 3 года назад

    been trying to grasp this in my online course for days this video was crystal clear

  • @DC-se3vr
    @DC-se3vr 4 года назад

    An abstract class helps us organize what that object should do. The abstract method is an idea to organize that object. ....
    Thank you for explaining this. I just had an interview and I couldn’t put this into words properly.

  • @emrezkc
    @emrezkc 2 года назад +1

    so in an abstract class we can have methods that are not abstract but in an interface we cant. makes perfect intuitive sense :)

  • @prasadjeyapalan8918
    @prasadjeyapalan8918 2 года назад +2

    You managed to explain this in 9 minutes what my professor was trying to ramble forever.

  • @rrsbunker
    @rrsbunker Год назад

    I swear to god I dont understand how abstract works, even after 1 whole semester of learning and trying to implement it. I avoid using it in my project because I'm afraid it will mess it up even more.
    But after watching this video, I feel like "bruh, it was that simple all this time...??"
    Thank you man. Wishing you luck on your life journey!

  • @metin1504
    @metin1504 2 года назад +1

    even though this is 3 years after the video, i wanted to say how much i can appreciate your down to earth way of explaining these things. something about it being more like a conversation helps getting the point across way better. keep it up!
    edit:
    ahh just saw the "end of java tuts" video. hope the new path is the right one for you!
    btw nice miata ;)

  • @monicaperez5101
    @monicaperez5101 4 года назад +1

    I perfectly know how to explain the difference between interface and abstract class! Thank you!

  • @kamile1085
    @kamile1085 3 года назад

    I think you deserve to get gold medal 🥇 if there is such a thing for Java instructors. I wish all the best for you!

  • @gomesfamily2.0
    @gomesfamily2.0 3 года назад

    I have watched so many videos from so many ppl and you are the only one I understand in all of your tutorials👌 ....Man from now on I'm not gonna listen to my professor and waste my time killing my brain from now on I can say I learned Java from Alex,god bless man!

  • @Alireza13488
    @Alireza13488 4 года назад

    Alex's tutorials are simply one of the easiest and most understandable videos I have seen on RUclips.

  • @JalerSekarMaji
    @JalerSekarMaji 3 года назад

    Guys, I will have technical interview for programmer job.
    its about 30 mins from now, need to refresh about OOP paradigm and found this.
    Thanks Mr. Alex!
    Wish me luck!

  • @roastxbeefx7744
    @roastxbeefx7744 4 года назад

    I will go through multiple different videos explaining a topic and I will not comprehend it until I watch your videos. Keep. Doing. Videos.
    Cheers!

  • @jethior
    @jethior 6 месяцев назад

    OOH Alex Lee!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I don't know why I understand only your tutorial with an open heart!! thanks, man for making my life easier. I appreciate you really.

  • @omarshaikh6622
    @omarshaikh6622 4 года назад

    You're the only person that made abstraction not sound complicated. Here's a thumbs up and a subscriber. thank youuuuu!!!!!!!

  • @JVenom_
    @JVenom_ 3 года назад

    I’m doing abstract programming right now in a summer course we need to learn c++, python, JavaScript and Haskell in 5 weeks. And I come to ur videos cause it’s soo clear that it translates languages

  • @SHUBHAMKUMAR-cd7fs
    @SHUBHAMKUMAR-cd7fs 2 года назад

    I just love the way you smile man along with teaching these tutorials. This kinda gives me motivation that this this is an easy topic and i can do it. Thanks.

  • @oguzgonul2584
    @oguzgonul2584 2 года назад

    35 page of powerpoint document is equal to your 9min video. Very clear, thank you

  • @greatjobbuddy
    @greatjobbuddy 3 года назад

    I learned more in this class on Abstract than my JAVA class at a California University. Alex was very clear about how it works. Saved me!

  • @maylouh
    @maylouh 3 года назад

    Thank you, sir, for saving me ! You explained this a lot better than my teacher did in 3 hours.

  • @davileett1224
    @davileett1224 4 года назад

    This is by far the best clarification resource I have found between abstract classes and interfaces.

  • @InternetUser999
    @InternetUser999 3 года назад

    When you choose the first result off the search screen and it is a really good video and actually teaches you something. Nice job, man. I loved the video!

  • @georgei2480
    @georgei2480 Год назад

    Alex Lee taught me more than all my collage profs combined. A true programming hero

  • @HelicopterRidesForCommunists
    @HelicopterRidesForCommunists 2 года назад

    Helpful, accurate, correct, and made easy to understand.

  • @omniversal4739
    @omniversal4739 4 года назад

    Thanks for explaining the differences between an interface and an abstract class.

  • @banusha4898
    @banusha4898 3 года назад

    Many hours of classes is just within 9 mins....you explained clearly just like a friend explaining everything 10 mins before exam.

  • @anastasiagavrilita6567
    @anastasiagavrilita6567 4 года назад

    At the beginning of this video, when you said "this may be a bit confusing to you", I swear that words I never knew I had in my vocabulary came to my mind to help me curse, because hell ya, I was confused!
    At the end, when you clarified the difference between the interface and the abstract class and said "hu, that was a lot!", my brain was already doing the happy dance. Thank you so much!!!

  • @jiggoqoila9241
    @jiggoqoila9241 2 года назад

    The comeback I did in my final exams yoo thank you mate with your All Java classes 🆙

  • @testiafendiabdulwasi1058
    @testiafendiabdulwasi1058 2 года назад

    after watching for 3 minutes i felt to like and subscribe and continue its wonderful how you explain

  • @jespinoza011
    @jespinoza011 4 года назад

    This man is a fantastic programmer and instructor. He helps by breaking down complex terms and concepts, making them so easy to understand. Definitely worth subscribing, I look forward to more of your videos!

  • @Seánasadventure
    @Seánasadventure 4 года назад

    im so glad this guy exist i am basically watching his videos for everything i learn now, because he teaches it better

  • @aanarmath
    @aanarmath 4 года назад

    We - Java learners are so lucky to have you

  • @kuldeepSingh-mi6lt
    @kuldeepSingh-mi6lt 2 года назад

    Best teacher online for Java thanks sir

  • @MagicTheNoah
    @MagicTheNoah 4 года назад

    You have helped me very much

  • @seko1900
    @seko1900 2 года назад

    You make BEST Java Tutorial/Explain Videos … thank you

  • @AlvomaniaDK
    @AlvomaniaDK 3 года назад

    Lovely and comprehensive tutorial. thanks for taking the time

  • @user-ny8ow3uj2b
    @user-ny8ow3uj2b Год назад

    this was so helpful and i'm so glad you went over the difference between an abstract class and an interface because i was sure about to leave a comment asking!

  • @hannahlocalio7011
    @hannahlocalio7011 2 года назад

    you're great! You're not robotic, you can relate to me and you understand the struggles and that's why you're my favorite java channel! :)

  • @ericlin8331
    @ericlin8331 4 года назад +1

    My professor spent an hour and 30 minutes trying to explain abstract classes and still manage to fail to get us to understand it. This is wayyy more clearer.

  • @johnkeen7433
    @johnkeen7433 4 года назад

    Fun, creative, right, helpful, imaginative and incredibly useful to say the least.
    I like that there is not one word that I had to struggle to understand.
    Very articulate, thank you for making this video.

  • @juiceboxxe5959
    @juiceboxxe5959 4 года назад

    I'm brushing up in prep for interviews and you are so clear and helpful. Thank you.

  • @Nergeww
    @Nergeww 3 года назад

    Holy crap I finally understand this a bit! The problem with most profs, is that they throw all the new terminology and expect us to use it to help us understand what we are learning. This makes so much sense now, thank you!

  • @ramz161
    @ramz161 2 года назад

    I understood more in the first 8 minutes of this video, than in 2 hrs of my professors lecture. Thank you Alex, Great work!

  • @Gofishinmore
    @Gofishinmore 3 года назад

    When trying to learn these concepts in school I think the biggest word that through me off was implemented. All the textbooks use it but I didn't understand what it meant. Thankfully you described it very well here and I feel much better. Thanks!

  • @radioactive5882
    @radioactive5882 3 года назад

    This Tutorial was so easy to follow. Thank you. My textbook was obviously over complicating things.