8.7 Polymorphism in Java

What is Polymorphism?
The ability of an object to take on many forms is known as polymorphism.
The word "poly" means many and "morphs" means behavior. So polymorphism means many behavior.
Types of polymorphism : compile time polymorphism and runtime polymorphism.
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[@anaskala1196]

I am wondering about my father's reaction, when I tell him that his mobile phone is my mobile phone.

[@rajatpradhan9219]

Lol😆!!

[@McLovinBillion]

That was probably the worst example of inheritence and polymorphism 😂😂😂

[@chintanSharma29.02]

*Flying Chappal Appears*

[@jhansiravipati1698]

HAHAHAHAH

[@giorgi23]

As nowadays mobiles phones are almost our identity this is true, but in 2005 we could share our phones easily :))))

[@miguelunch4]

Thank you so much, you make it so easy to learn. Even though it's obvious that you're an expert your explanations can be easily understood by beginners Seriously, thank you.

[@ekanshmishra4517]

One of the best explanation of such difficult topics.. thank you sir🙏

[@RealNaps]

I LOVE THE EXAMPLE OF YOUR PHONE, IT MADE EVERYTHING CRIPSY

[@mamtarani8331]

Omg finally method overriding concept is cleared.... Thank you so much sir for explaining with the easiest way

[@rikinshah5367]

He said "IF WE ARE HUMANS" means when he says "HELLO ALIENS" he actually means it lmao

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I literally laughed for 1 minute straight as I read your comment.

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i want someone to comment on this....lol

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😁

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Best professor for Java 😍

[@Icecodes]

I agree he needs a Udemy course.

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@@Icecodes he have

[@shreypatel920]

You are really good at giving examples

[@geethanjalibaskaran3028]

Perfect example and I clearly learned the concepts.

[@mohamedhassan7849]

Actually it's very funny after i listen a full lecture and get nothing if not confuse hhhhhhhhhh but the time i watched this 9min lecture i got whole concept and am hereby thanking you brother. UNCOUNTERBLE THANKS MAN.

[@shankarprasadchatterjee4286]

Wonderful sir Who can make such complex concept so easily

[@dnyaneshwarkadam6823]

Navin sir lot's of thanks for opp's (polymorphism) concept... I understand this concept very simply because of you. Really thanks 😊.............

[@yaswanthmanikanta664]

best professor of java thank u sir for helping us

[@sai5926]

Excellent explanation about polymorphism Naveen garu

[@bijoyaroy4559]

Overloading is static polymorphism, compile time and overriding is dynamic polymorphism, runtime

[@raaoohin863]

public class A { public void printthis(){ System.out.print("love the way you explain"); } public static void main(String args[]){ A obj=new A(); obj.printthis(); } }

[@zombnie]

very well explained.Thanks navin

[@knowledgeunlimited]

The way you explain make things and concepts easy to understand. Thank you sir, good one

[@TheFlyguy31]

Thank you very much, Mr Reddy

[@SmartProgramming]

its really awesome feeling to watch your tutorial, very very helpful tutorial 👌👌👌👌🙂🙂🙂

[@THEGAMER-cc2eq]

"My father's phone is my phone but my phone is not my father's phone" Father: Mera raja beta, aaja idhar tuze chocolate deta hu, aaja

[@vinuthbt6647]

Thank you so much ❤❤❤

[@vigneshwarvicky5048]

nice example for method overriding with real time scenario

[@vicky89ist]

great teaching skill

[@arvind_purushotham]

father example..easy to remember for polymorphism, method overriding

[@collinsushi1155]

To me, this video is centered on inheritance, method overloading and subclass overriding methods in superclass. You apparently said nothing on Polymorphism.

[@SpiderpigThe]

This is what Polymorphism is in Java, Method overloading is an example of static polymorphism, while method overriding is an example of dynamic polymorphism. The example he provided fits the best and the most important example in Java, which happens in parent to a child relation. Got finals tomorrow in Java lets see if he's right or not lol.

[@collinsushi1155]

Whao!!! I apparently believe that; there is no polymorphism involved with overloaded methods (i.e methods with the same name but different arguments lists)

[@siddharthadas86]

Absolutely. Polymorphism is with relation to method overriding. However when you override a method in a subclass, you can if the situation arises also overload it. The biggest advantage with polymorphisms is that behavior is defined in superclass but the nature of it depends on subclass type. So basically if two or more objects have the same instance variables but very different implementation of them in subclass, you put them inside an abstract superclass and then override those in your subclass as per your requirements. It saves lots and lots of extra coding. Abstract classes, polymorphisms/method overriding, Interfaces, inheritance and encapsulation is what OOP is all about

[@eswarprasad9773]

I agree with collins,coz in practical true polymorphism comes into picture when Upcasting and downcasting s done! yeah overloading and overriding are related to polymorphism,but he explained them with inheritance as center point viz a subclass using and changing its superclass s methods.

[@Coolpratik10]

my phone is my phone none of your phone ,,, System.out.println("hello sir,nice lecture easy to understand ");

[@_KIRUBHASANM]

Sir can we have two classes which has same named methods but without inheritance?

[@bogdanvasile5190]

Great trainer!

[@Nishant_0073]

Sir,concept is cleared Thank You So Much Sir.......!!!!!!!!!

[@sidramowlana]

Understood perfectly thank you for the great explanation :)

[@nirajpratimbhuyan76]

Please let us know about Dynamic Polymorphism.

[@ashutoshsharma5258]

I was the one who was calling around 6:00. Sorry to disturb you all.

[@shivamkamdi6822]

Thanks sir .!!!

[@fareedahmedkhan9923]

Sir, what if we have got multiple methods with same name but different parameters in different classes Not in same classes Than what will be it called method Overloading or method overRiding

[@chaitali2811]

As per my knowledge, it will be called as method overloading because if we call the method from child class object, then it will return the result as per the parameters we are passing. It can return results from parent class too as per parameters passing.

[@TonyBlundetto86]

Telusko is SO BOSS. I made my example with Animal as a superclass of Cat. As an animal, a cat breathes, eats, and shit. As a cat, meows, claws, and purrs. Overloading.- As an animal, eats(fish) and eats(meat).- Same method name, different parameter in the same class animal. Overriding.- Every animal shits everywhere they can normaly shit(where){everywhere}. A cat just shits in a sandbox. shit(where){sandbox}.- Same method in different class (Animal and Cat), shit(where) in child class cat overrides the shit(where) superclass Animal method, so our cat will be nice and shit in a sandbox as it should.

[@muthusamyr4310]

Ur example was awesome

[@sulaimanabid5487]

He explained it very well highly recommended for java

[@mechnovashia]

Nice Explanation. I request you to make a video on Aggregation concept too.

[@Chandalyt]

Same example in python tutorial

[@ankushbanerjee8509]

Great Examples everyone can relate easily😍😍

[@inji3570]

Video voice quality is low, but your explanation is amazing

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Thanks sm for this video! Definitely one of the best I've seen :)

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I don't have any collection have lacture wise questions .so,If you sir free then make a video how to get i question.

[@nesaresar7898]

However, POLYMORPHISM in Java means that a superclass reference variable can reference objects of a subclass. Overriding in a "is - a" relationship (Inheritance) means that a method in the subclass overrides the method with the same signature in the superclass. Consider the following example: 1. public class ClassA 2. public class ClassB extends ClassA POLYMORPHISM means you can do the following code: ClassA obj = new ClassB ();

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What r the java concepts we have to learn for selenium?

[@yashbudhe97]

6:32 Epic Example😂

[@SukruthJayam]

Super lecture

[@SonOfDhanunjaiah]

TQ very much

[@Asingh42]

what is polymorphism I did not understand I just understand overriding and overloading

[@laxminarayanpandey1191]

Polymorphism is the ability of an object to take on many forms. The most common use of polymorphism in OOP occurs when a parent class reference is used to refer to a child class object. if A is parent and B is child, then the reference of A should be able to refer the object of B: A ref=new B();

[@sai5926]

both overloading and overriding are called as polymorphism

[@AmbarjeetChaudhari-u7j]

Watching this video today...nice explain and clear concepts easily while you teach. btw- who is coming while you teaching sir ? 🤣

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Superb!

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i love it, when some things slip out of his mind and for remembering them he keeps looking at the roof XD . TBH great teacher

[@raamch]

He portray like a beginner how he/she thinks so that it connects to beginners. That’s a great way of teaching a complex topic like Java programming.

[@ahnipun]

thx for ur video

[@nirmal2979]

If your father's phone is your phone then is it not your phone is also your father's phone??? Is it inheritance???

[@rohitsoni9325]

Nope, Its Not inheritance, Inheritance is only one way concept; Eg: we have a class Engine; And If we want to have a Car, we will inherit Engine from the class Engine; Now, class Car have all the functions what class Engine had, This is Inheritance. ITS NOT LIKE :: If you inherit Engine for a class Car then class Engine will be having all the functions of car as well...

[@bhautikmakwana9897]

If diffrent name but same parameter in same class what is it call , Overriding??

[@sauru265]

No, it will be treated as new method. No method overloading and no overriding. For overriding, that method must exist in interface.

[@rusty5100]

Great video. I laughed at your Hammer phone reference hahahahhahah

[@HarshvardhanMishraPIER8]

Why method overiding is called runtime polymorphism?

[@Nextgentrick]

how does the word crush came in between

[@sonalinarkar6087]

Hello sir , do you still have live sessions to for questions and answers?

[@gladiath0r]

Disclaimer:No phones were harmed during this.

[@nikhileshsahoo1789]

u havent told anything related to run time and compiltime polymorphism!

[@yogeshpujari8172]

Types of polymorphism how to explain in interview

[@swatidikonda955]

the lec was very nicely explained i want more lec on oops

[@mohamadakkad4887]

deal with u

[@alexcaesar5377]

Accent is a big problem to comprehend the subject

[@priyeshkaithvas3489]

Best and easily explain this topic thankyou

[@fareedahmedkhan9923]

Nice Explanation Sir, Literally got the whole concept and the examples also were superb Thank U 🤗

[@jegadeeshjega296]

Good and super and explained well with example

[@rustm5167]

thank u dude. like from me and subscribe (:

[@geethamadhurivasa5779]

I think someone is disturbing u from your right side

[@muhammadsaadamin6574]

sir you just have told overriding function but you havnt told which function will going to be run ie class A.show or classB.show kindly clearify in the reply below thnku v much !

[@kevinpatel5106]

That was a great analogy, thank you for your help!

[@BeardAndBeans]

java program that can maintain a list of items. It will display a menu with the functionality to add an item, and Display All Items (sorted in ascending order by price), and of course Exit.

[@rajeshthakur-0163]

System.out.println("hello sir,nice lecture easy to understand ")

[@johnveslyalanroy1243]

error

[@Leon_yt786]

Sir I have a doubt

[@shijilnarayan3889]

Amazing example sir !!

[@nehamaggu3719]

sir you hv not defined scenario when parent object is used to call methods and incase parent is not having function and parent object is used to call child method

[@MJ-th2du]

it was great until the phone example :p , nice lecture very helpful

[@Nisheemishra]

Hi Sir, Once i was asked give one example of a program which can have both overloading and overriding concept? Could you please help me on this

[@alienpuppy]

Actually polymorphism means many forms. Although i understand everthing in all of your videos, i still cant get the concept of polymorphism, and how are overriding and overloading related to it. thanks for your videos and greetings from south america.

[@sreenu9482]

sir please do videos on angular js or Video course for money in telusko.com

[@raamch]

Never bored of your voice! #javatutorial outstanding Tutor.

[@rosh9318]

poly " manny " morphism " forms "

[@tahashaikh9958]

Subscribed😎👍

[@adityanjsg99]

Clear explanation. Budding Data Scientist, here for Java basics and more than happy.

[@LukaszSkyWalker]

Thx!!

[@nikhileshm865]

Perfect exemplification

[@vladanulardzic5859]

Great practical examples. So simply explanation of Polymorphism I have never seen before... and very effective. Thank you very, very much. Great teacher you are. Regards.

[@juliet5446]

Best teacher I have come across

[@nikhiljadhav6621]

Is there any concept of Object Overriding ?

[@dharanis9277]

Nice explanation bro

[@nishantsharma3100]

bro you were uploading in 4k in 2016 . OMg lol

[@nirmalapatra5985]

i heard about compile time polymorphism and runtime polymorphism. what is it then?

[@yuvakiran1284]

Excellent 👌👌👌👌👌👌

[@arunjaiswal854]

QnA sessions are going on?

[@lisaswarn9838]

does he still respond?

[@abdelmalek9004]

thank you very much,this is amazing, good explaining, the example of phone was is very impressive thank you again.

[@nancharinaidualthi1047]

sorry to say voice is not clear sir... except that everything is good sir...

[@vibecatcher4416]

Thankyou sir

[@aysha-8781]

♥️ best lecture.