Factory Design Pattern in Java

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What is Design Pattern? #factory
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Factory Design pattern in java
Factory design pattern belongs to Creational design pattern which belongs to Design Patterns in java.
This video has practical sesssion on factory design pattern.
Factory Design Method Pattern defines an interface or abstract class for creating an object but let the subclasses decide which class to instantiate
Factory Method Pattern is also known as Virtual Constructor.
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[@tonnie7079]

Simple and straightforward explanation, this gonna stick with me forever as a Dev. Thx Nev

[@tural.ahmatov]

Thanks for very easy to grasp explanation! It was actually much easier than we think if presented right. Kudos!

[@thestarinthesky_]

Clear, simple, nice and effective way to teach Factory Design Pattern! Super helpful to me!

[@amtawfiq]

This is the most straightforward implementation I've seen so far. Thanks a lot.

[@ajaybabusingineedi804]

Really nice and worth for gaining knowledge.Thanks for that. Humble request you to make videos on the other missed Design Patterns as well. Many Thanks.

[@shaistakhalid7761]

Easy and quick explanation like other java pattern examples. Thanks for your hard work you put in to make us understand.

[@AM-qc7gh]

Absolute life saver, so much clearer than my lecture

[@manasranjan7894]

I have watch many videos for this . finally got a simple understanding explanation for factory design pattern. tysm

[@ee-sj8qr]

your video is crystal clear i got my understanding right from you thank you!

[@limbritadaikalam1847]

Thank you! wonderful explanation.

[@pratimsarkar7205]

Its simpler to understand than other videos in youtube

[@NaveenKumarasinghe]

Awaiting for more...!! Amazing... thank you!

[@AshutoshKumar-kq9vh]

To the point. It really helped me. Thanks so much!

[@saichaithvik]

Thanks.. excellent and simple .. way understanding .. for a layman

[@lokesh398]

Really a awesome video I got clear knowledge about design patterns especially factory design patterns.🙏🙏

[@tanertasim3637]

I really liked your comments about the mobile operating systems :D btw nice explanation , keep it like that !

[@rohannarkhede7479]

1lakh views and not even 1k+ likes... Guys don't just watch the video and go... At least show some respect to this guy and his work.

[@kandisaganesh]

I guess reason is being his opinion about Windows 😀

[@s3649]

Thankyou very much sir. Really to the point explanation.

[@palashkhatri7820]

Nice one , cleared a lot about FDP Thank you

[@prakharawasthi2579]

That happy realization that its "instance" not intance :D

[@pranavkr3565]

🤣🤣

[@parthpatel3639]

as the usual, clear and nice explanation

[@kunaljain6210]

Thank You for the clear explanation.

[@muralidharang5664]

Thank you Navin, it is clear and precise

[@sicariussss]

This is a really nice and simple to understand explanation, thank you so much!

[@Tydides64]

Yes it is, because this isn't Factory Method :)

[@topoisonfungus]

Hi Naveen,I am preparing a introductory video set for freshers in my team and I have selected many of your basic online lessons. Thank you for the videos..real time saver for me.👏 One question: what's the background behind the hello aliens greetings and object names in your video? Nation wants to know.🧐

[@natashayxt3458]

Thank you so much sir for explaining design patterns

[@MrSaransh]

I like your humor as well as teaching skills :D

[@praneetkumar4420]

Very nice and simple tutorial....good job..

[@sohamdatey9035]

@ Everything Summed up in a nicely compact informative Session

[@romanterendiy5007]

Great tutorial, thank you

[@dinushachathuranga7657]

Thanks a lot clear explanation.❤

[@pranjalnegi9834]

amazing very easily explained

[@puna770]

ekdam mast samjhaya hai thank you :)

[@AyushVerma08]

Excellent example! Keep it up.

[@Tanzeel431]

Superlike. Thank you Sir. :)

[@md.ruhulamin7963]

Think you sir. This is very helpful.

[@bishwajitsahu2100]

nice explanantion....... very helpful

[@sagarmeena2596]

amazing explanation

[@praveennandham2933]

Really amazing explanation..

[@snehashreer8356]

Thank u so much!

[@FutureSmartAI]

Please upload more videos,Thank You.....

[@techatnyc7320]

Thank You, Naveen!

[@greentorainchannel386]

Nice and simple to understand 👍👍👍👍

[@javatoyou862]

great job sir

[@vamshikrishna298]

Good content and explanation buddy

[@eliy5550]

THANKS SO MUCH

[@piraviperumal2544]

Awesome

[@Pratapsingh-mt9cu]

In ur explain u can take also template design pattern need to modification required just create one super template class and here declare all the abstract method and override it but in future any thing modification required then only go to the super class and modified without any ur os and android class

[@RetroGames1979]

The only thing you are missing, is why? as in, you could use the args[] to pass the OS type at run time, depending on what OS you are running, therefore having a dynamic application based on what is passed to it by the caller

[@kreenu5035]

Nice tutorial...I suggest you add abstract factory design pattern

[@delankoh3494]

Good for cross browser testing during automation testing using java

[@mohammedviso2269]

thank you

[@BeWithNarendar]

PERFECT !!

[@parulgupta8231]

Nice Explanation

[@kidslearningscience]

Good one.

[@rmn6088]

Can you please also tell how can we use it with @Autowire I want to be able to switch between the two databases using factory pattern.

[@muralidharang5664]

Thank you ,It is clear, Please let me know if we have a video for abstract factory design pattern

[@kirankumarpurini2476]

thanks

[@hardikahuja5645]

Nice explanation bro!!!

[@sagarmeena0210]

love it

[@biswa12]

Thank you

[@ThePhysics1234]

very nice

[@vinothKumar-ik9lu]

Hi Navin, Can you take video for Abstract Factory design pattern ?

[@AtifLightning2]

Thanks

[@mahinqureshi5809]

Hey .. i m new in this learning journey of Design Pattern . This video was really helpful but i m confused in this one thing , who is this "client" ? I m sure its not the end user .. is it someone who's gonna use that result to work further? A fellow programmer ?

[@meenakshisharma1870]

Please make a video on Observer design pattern as well :)

[@piotrboczar7967]

Thanks!

[@rounakdas2633]

Hi Sir, thanks for presenting this topic in such an understandable manner!

[@Jaggahero]

Could you please explain abstract factory pattern and difference between factory and abstract

[@moniljoshi1850]

Can you please make videos on decorator and strategic design pattern

[@saisnehitha1043]

What you have said in this video is a simple factory..

[@akramladaf7817]

Thank bhai

[@kosireddigangadhar7182]

Super bro👍

[@dulajudayanga4050]

thanks a lotttttttttttttttttttttttttttttttttttttttttttttttttttttttt Very good human in the planet

[@nitinkhutemate2155]

People who have disliked his videos are those who are using Windows mobiles :p

[@risteardob2095]

Or perhaps they disliked it because it's not accurate. What's described is not the Factory Method Design Pattern.

[@honest_bishop5905]

@@risteardob2095 what is it then?

[@adithyarathnayake]

😂 you mean, they gonna die

[@iamSSudheer]

Hi Naveen, when we are adding OS obj = osf.getInstance("something"), it means we are modifying the client class and we need to compile it. How is this different from directly creating object of IOS class?

[@joseph2073]

When you'll create a full project ... Then this string will be taken from the user from the frontend and based on that we r creating object and returning it. So user doesn't need to create object , he only needs to type the string and thus object creation stays hidden!

[@MegaRockandroll09]

Your sense of Humour is Amazing. Windows OS: " I'm about to die" lol

[@kishorthekhiladi]

looking for more design patterns..

[@dilipsoni4695]

which s/w you using for coding

[@SvetoslavHristov-uh4eo]

Can we create this getInstance method as a static method in OS interface?

[@Pratapsingh-mt9cu]

factory design pattern is only use to the minimal modification is required but again we are not achieving the complete loosely couple

[@sharaththatikonda5386]

make videos on all design patterns.

[@_xenomorph8096]

Can you add real life video example with spring ? …switching between databases auto wiring with factory

[@Studyroid]

3:44

[@4cankursharma]

even I also laughed so hard on that....

[@lalithmahadev5027]

But it is not dying does it ? It still holds 75 pc market share today in desktop os

[@karthican2010]

Why is getInstance() method is returning OS type (6:30) in OperatingSystemFactory class. Can someone explain the reason behind it.

[@nonamespls3468]

This guy has a lot of great videos, learned a lot from his videos. Although for this one, and some of his videos he doesn't really explain the purpose clearly, why would you do that? why bother? also factory classes for most implementations I saw , then getInstance method is static, makes sense, you don't need to create new factory every time you want some object. Also some best practices would help, like some implementations I see enum as the param type of getInstance.

[@dkstudio7828]

It very nice, but do you think your OperatingSystemFactory class is violation of "Open Closed Principle"? I think we should use other way instead if-else

[@MrSaransh]

What if we use hashmap for that ?

[@divyeshkumarbalar7732]

i think its better to package all 3 OS with interface and make those classes default rather public and then make a public factory there in the same package without if/else. that would be more secure

[@jemschaudhary5922]

Nice video... I have a question about inheritance and polymorphism. I am creating a static method in child class which have private constructor. And the parent class have same private constructor and stayic method. Parent class extends GrandParent class which have public constructor with 3 arguments. My problem is the error shown in child class for making its own constructor. Can you please show me any direction.

[@yudhisthirsingh8401]

clear hai

[@tinkot]

What you call importing the package is importing the class.

[@gamerkids-india]

Wow

[@risteardob2095]

What you have described is not the Factory Method Design Pattern. I think you're describing the Simple Factory which isn't an actual design pattern.

[@abhisheksengupta2819]

yes

[@LargerThanCats]

It is the Factory Design Pattern. The Simple Factory uses the Factory Design pattern with one caveat. In this example he is simply demonstrating abstracting away the creation of a product from the client. Extending it to the Factory Design Pattern means instead of simple abstracting away the creation, you're controlling the creation and management of that newly created product. Such as Spring and bean creation. So not exactly the same thing, you're right, but it is a demonstration of one element of the Factory Design Pattern.

[@abhijithss1244]

Shouldnt we implement singleton also here for maximum optimisation

[@Secretclaps]

7 years later and I am still watching it.

[@vinaykumarneela4538]

can u suggest me the structure of this example

[@PremChougale]

What if we want to add more Operating systems but don't want to make changes in OperatingSystemFactory. Is there any way to do this?

[@AspirantNoteBooks]

which version of IOS you are using >??

[@vinays8546]

its good if OperatingSystemFactory is made singleton instead of using new operator in client code, isn't it?

[@digiartpassion8513]

Didn't understand from line 5 in OperatingSystemFactory.java.....We generally declare methods directly why r u creating as public Os getinstnce()......plz explain

[@ritikshrivastava9442]

Factory design pattern = if you are creating object on the basis of some condition(here based on the parameter that is passed) then it is known as factory design pattern.