ALSO KNOWN AS RUNTIME POLYMORPHISM //************************************************* import java.util.Scanner; public class Main { public static void main(String[] args) { //Dynamic Polymorphism Scanner scanner = new Scanner(System.in); Animal animal; System.out.println("What animal do you want?"); System.out.print("(1=dog) or (2=cat): "); int choice = scanner.nextInt(); if(choice==1) { animal = new Dog(); animal.speak(); } else if(choice==2) { animal = new Cat(); animal.speak(); } else { animal = new Animal(); System.out.println("That choice was invalid"); animal.speak(); } } } //************************************************* public class Animal { public void speak() { System.out.println("animal goes *brrrr*"); } } //************************************************* public class Dog extends Animal{ @Override public void speak() { System.out.println("dog goes *bark*"); } } //************************************************* public class Cat extends Animal{ @Override public void speak() { System.out.println("cat goes *meow*"); } } //*************************************************

Man I just looked at ur sub count and you have Grown!! Great job with the videos!

One of the most understandable lessons on KZfaq. Thank you Bro!

Love this channel! I spent a whole week trying to understand polymorphism and it was really a nightmare since I couldn't get anything from the lecture at uni. Your video really save my life. Hope that you have patreons so that I could support :3

The example at the end was great. I think i got a good idea of how it works. Thanks a lot ❤

I played Pokémon when I was a kid I played WoW when I was a teenager / young adult I study Computer Science as an adult I like this channel! :-)

Thank you Bro Code. Your video helps me a lot to understand polymorphism! I've spent a few weeks catching those concepts before watching your videos. I should've found this early.❤

i liked that example with pokemon. that's what i like about this channel. examples are given of what certain methods are used for.

Great vid, I like the video game examples, keep them coming!

You explained everything so well !! *subscribed*

Good video. BTW, can you make a small java game series or if not that then a video of making a cube in Java?

Great, man. I like the way the example is given. To the point

I watched a lot of KZfaq Java tutorials, You are the best, and I hope you can create more practice Task questions and solutions videos

Great! You made it very understandable! Good job!

Amazing job...love the way you explain

Thank you bro! let's fight the algorithm :D you deserve it

# 1 best java teacher

My ged u explain it clearly bro. Thank you

thank you bro

thank bro you literally saving my A$$ before exam

Like and subscribed, thank for saving my assignment grade

Yoo Man. Just got the idea from the video. Thanks.🙏

I really like this channel. Thanks Bro Code.

You are awesome man . Thanks a lot

Nice Example Earned a sub :)

Thank you for free courses ❤

All these prayers go towards my next job

I subbed btw

Hi Bro Code! okay, so I'm totally new to programming and been told to start with Java (something I'm still trying to understand why:)). Anyway, I do like your content but do have a question regarding this particular video. I guess I understand the concept and the logic behind this dynamic polymorphism thing but still having a hard time to understand exactly why and when I would use it. Here's the confusion in my head: Why can't I just use the following if/else statement to achieve the exact same goal: ------------------------------------------------------------------------------------------------------------------ if(choice==1) { Dog dog = new Dog(); dog.speak(); } else if(choice==2) { Cat cat = new Cat(); cat.speak(); } else { Animal animal = new Animal(); System.out.println("That choice was invalid"); animal.speak(); } ------------------------------------------------------------------------------------------------------------------ So, I instantiate a dog object or cat object when and if I need it at runtime just as in the way you have done it. Can you or someone reading this message and who knows the exact answer, please reply to me and let me know because it is driving me nuts trying to figure out. I have been Googling this thing for the past 2 days straight and have not been able to find a detailed explanation as to why someone would do it the Bro way when it can also be done my way. I'm sure there's a very good reason which is why it was implemented in the first place but WHAT IS THAT REASON? :)

ty! Very good explained! :-)

Thanks, Bro! ☕ You're awesome!

Good explanation and examples

Bro explained Factory pattern, without saying it's Factory pattern 👌

Thank you very much!

awesome videos for beginners

Great youtuber

Thank you so much sir.

Thanks, Bro!

Bros before codes! Good content!

great video. great teacher

thanks for the video!

hi Bro why we don't use "Dog dog=new Dog();" and can we use switch statement in a place of "if Statement". thank you bro love the way you explain

as always, thanks

Thanks 👍🏾

Do u think python is better or java

YOU ARE THE BEST

Animals go BRUHHH

Good

Cool I learn it

so amazing 😮

wait i have to point something out real quick im pretty sure insted of using if or elseif statements couldnt of u just used a switch statement. great vid btw

nice video

Please make videos for mobile app development.....

Good. But we should consider, if a Animal dog is treated as Animal, that is acceptable, but if that dog(which treated as Animal now) is treated as a cat, what exception will we get? I think we will learn that next.

nice video bro

Thank You So Much

aasam vro

thanks

Love u Brother

Nice content.

thank you

thanks!

Thanks

ty bro

Hey bro, I got a question when watching the video, what's the difference when creating the object using Animal type compared to using the specific type of Dog? Appreciate it if someone could answer this.

Thankss bro :)

What will you do after Java?

Impressive!

awesome

thanks bro

Good video.

Thanks 🌸

dope video

🔥🔥🔥

1) Animal animal = new Dog/Cat();??? 2) Animal animal = new animal(); can someone explain this to me how the 1st statement is true as its taking the data type from different class while declaing another class object ?? i know my question make no sense jus try to humor me the only explanation i am think is the animal class is extend to both dog and cat so we can take the data from both the class

and that's that easy :D

long live bro

i am helping you right now

what is dynamic polymorphism, is it overiding?

Why not just create Cat someCat = new Cat() or Dog someDog = new Dog() inside that if-else?

where is the new videos?!

❤❤

I'm Finding this familiar.

Am i the only one to still use notepad lmao

polywhirl

k

111

comment

Bro

Yo just wanna say that GOD loved the world so much he sent his only begotten son Jesus to die a brutal death for us so that we can have eternal life and we can all accept this amazing gift this by simply believing in him (Jesus) asking for the forgiveness of your sins and forming a relationship with heavenly father.././...

Thanks

thanks

Thanks, Bro!

Thanks

thanks