Applet Orchard

Facade Design Pattern

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Welcome to may Facade Design Pattern Tutorial! The Facade pattern is extremely easy to understand. Chances are you have used it already and just didn’t know it.

The Facade pattern basically says that you should simplify your methods so that much of what is done is in the background. In technical terms you should decouple the client from the sub components needed to perform an operation.

All of the code that I link to above will fill you in on anything you don’t catch in the video.

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35 responses to “Facade Design Pattern”

  1. lehlohonolo hlox Avatar
    lehlohonolo hlox

    Great tutorial Derek, you made it easy for me to undestand the Facade design pattern 🙂

    Reply
  2. Ranjan Sparrow Avatar
    Ranjan Sparrow

    These are the best videos for beginners. Absolutely Loving it!!!

    Reply
  3. asemelayan1 Avatar
    asemelayan1

    Literally the best….

    Reply
  4. Eduardo Segovia Avatar
    Eduardo Segovia

    Good job, keep it up, proud of ya

    Reply
  5. varma kaushik Avatar
    varma kaushik

    I learnt more than i thought i would from this video. thanks.

    Reply
  6. Baltori Xervo Avatar
    Baltori Xervo

    actually decreaseCashInAccount should call haveEnoughMoney, and not the other way around, but still works tho

    Reply
  7. mahesh Avatar
    mahesh

    Impressive !!!, Simplicity @ its Best.

    Reply
  8. Ardit Meti Avatar
    Ardit Meti

    Hi, can someone tell me what are the pros of doing it this way instead of writing just 1 class which have all those functions that all the other classes have? Does it violate the single responsibility principle?

    Reply
  9. Test Test Avatar
    Test Test

    If I'm correct, there was no interface interaction in this example. But Facade design can still work perfectly fine. Just want to double check because I'm going through the basic fundamentals.

    Reply
  10. Jorge Cruz Avatar
    Jorge Cruz

    Just a question .. why make a new method called makeADeposit just to call the method increaseCashInAccount? Can't you just call the latter directly?

    Reply
  11. Saurabh Karnik Avatar
    Saurabh Karnik

    Great Stuff Derek! Thanks a ton!! ALL of your design pattern videos are very easy to understand.

    Reply
  12. Gaurav Srivastava Avatar
    Gaurav Srivastava

    Thanks Derek 🙂

    Reply
  13. Karolis Liucveikis Avatar
    Karolis Liucveikis

    Why did you created a separate class for each task, rather than putting everything in a single one? Or is this the idea of Facade – putting everything separately and using Facade class as an interface manager by creating certain objects and calling other classes' methods in order to perform certain actions? The idea is to write the code in separate classes?

    By the way, thanks for everything. Been watching your tutorials every time I need something (C, C++, Java, Bash, Prolog, Haskell, some other stuff) for a couple of years now. Really helpful. Well done. (Y)

    Reply
  14. iGotTheGift Avatar
    iGotTheGift

    What should I do if my bank can't find my monie

    Reply
  15. Link149 Avatar
    Link149

    You should probably change your bank account's security key. 😉

    Reply
  16. Aisha Radwan Avatar
    Aisha Radwan

    for library system would it be right if i coded it in facade pattern!

    Reply
  17. Spencer Depas Avatar
    Spencer Depas

    Thanks a lot. Your work has helped me a lot.

    Reply
  18. Raheel Khan Avatar
    Raheel Khan

    u r the best ! 500th like 😉

    Reply
  19. Namesh Kher Avatar
    Namesh Kher

    Thank you Sir.

    Reply
  20. James Oh Avatar
    James Oh

    If the case happens where the security code is incorrect but they have enough money, then doesnt haveEnoughMoney() method in the boolean case still withdraw??

    Reply
  21. Yasir Shabbir Avatar
    Yasir Shabbir

    nice tutorial .
    Can you please tell where I can use Facade design pattern ?

    Reply
  22. Sandeep G Avatar
    Sandeep G

    Thank you for explaining in a very simple way.

    Reply
  23. Isuru Nanayakkara Avatar
    Isuru Nanayakkara

    Hi Derek, thanks for the tutorial. I have a question. Can sub systems behind the facade interact with each other? Is it allowed?

    Reply
  24. Muztaba Hasanat Avatar
    Muztaba Hasanat

    what is the difference between Adapter and Facade design pattern ? In Adapter an intermediate class is introduced to hide the others functionality. Is in Facade the same thing happening ?

    I have also watched your Proxy design pattern tutorial. Facade is more similar to Proxy that is what I think. It would be very helpful if you would distinguish this three pattern. Because all three is hiding some part of work from the client.

    Reply
  25. Mércio Filho Avatar
    Mércio Filho

    Awesome! Thank you!

    Reply
  26. an1792 Avatar
    an1792

    thank you so much

    Reply
  27. TimBee100 Avatar
    TimBee100

    Is this similar to the Business delegate design pattern? they seem to have a lot in common, although the purpose may not be the same.

    Reply
  28. Carlos Vizcaino Avatar
    Carlos Vizcaino

    Hey, Derek.

    How is the Adapter different from Proxy Design Pattern. Thanks.

    Reply
  29. Sipan Arevshatyan Avatar
    Sipan Arevshatyan

    So simple and easy. Thank you!!

    Reply
  30. crudhost Avatar
    crudhost

    Really helpful. Thank you very much.

    Reply
  31. Larry Bernstein Avatar
    Larry Bernstein

    Derek, Ive never enjoyed these videos as much as I enjoy yours. I do have a question though. Why not check the accountnumber and security code in the constructor of BankAccount? If the account number or security code us wrong set a boolean that will let if we can go further or not. This will avoid duplicate code.

    Reply
  32. Chadi Khouri Avatar
    Chadi Khouri

    Thank you Mr. Derek for the perfect description. Let me ask you a question:
    can facade or session facade help me in design the below case:
    I am developing a servlet page which return result depending on the input parameters and I should save the parameters during the session in DB or online object.
    what do you think

    Reply
  33. Diego Benitez Avatar
    Diego Benitez

    Hi, im following all yours videos, and i have to say that im learning more from you than collage professors. Im begginer in design patterns, and let me ask you, why there is a class that acts like a method? ex: accountcheck, fundscheck, securitycodecheck? thank you and keep making videos

    Reply
  34. MusingRabbit Avatar
    MusingRabbit

    Oh….. Thats a design pattern? Thought that was simply encapsulation.

    Reply
  35. aditya chaudhari Avatar
    aditya chaudhari

    Thank You for quick explanation

    Reply

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