#52 Method Overriding in Java

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In this lecture we are discussing:
#1 method overriding
#2 Necessary condition for method overriding
What is method Overriding?
It is way to override the parent class method in child class .
class Parent{
int a;
public void show{System.out.println("this is parent");}
}
class Child extends Parents{
int a=10; //override a
public void show(){System.out.println("this is child method");} //method override by child class
}
class Main{
public static void main(String []args){
Child c=new Child();
c.show(); //call the child class override method
}
}
-- method overriding is run time polymorphism
-- it is use to increase the reusability of code
#2
for a method to be overridden, the following conditions must be met:
-- The method in the subclass must have the same signature (name, number and type of parameters) as the method in the superclass.
-- The method in the subclass must have the same return type (or a subtype) as the method in the superclass.
-- The method in the subclass must have the same access level (public, protected, or private) as the method in the superclass.
-- The method in the subclass must not be static, while the method in the superclass must be marked as non-final.
-- The overridden method must be visible from the subclass it means you can change access modifiers but there is condition for
-- you need to increase visibility but you cannot reduced it , you can do it using access modifiers.
-- you can change access modifiers in this manner
private -default -protected -public (in upcoming lecture access modifiers has been discussed)
for knowing about access modifiers wait for access modifiers lecture in this playlist
class A{
void show(){ // -- by default access modifier is default
System.out.println("A");
}
int a=5;
}
class B extends A{
protected void show(){ //-- access modifier is protected --we can increase visibilty
System.out.println("B");
}
}
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[@FindARandom]

you are doing Great work ,some people selling this amount of knowledge by charging large amount of penny

[@mohdarsalan7195]

it's a great clip for clearing the baiscs of java and i had to learn more deeply the concepts and theory which is awesome for me

[@PrashantsaudBCADS]

Your explanations are very simple with real life examples which helps us to understand the topics even better

[@aspirant4300]

At the end moment, i watched your video and the concept is pretty much clear as it was not in my whole semester....Thanku so much Sir💫❤

[@t.k.jagirdar505]

Thank you sir... It was really in very basic format u made us understand 👍

[@justintruesell2062]

Very good explanation, imo.

[@akhilhimnad9281]

Best video for method overriding. Respect for you increased.👍👍👏🏻

[@bharadwajchodavarapu8719]

Thank you for helpful teaching sir!!🌟

[@adiraypureraypure563]

its 2024 IM LEARNING alot more from ur vedio
it like paid course content u gave us free thank you sir

[@syeddanish5334]

Best explanation sir

[@varathannk264]

Thank you sir

[@FindARandom]

I just build 2 enterprise grade project using servlet and JSP by watching just 5 hour of video , is not that enough if you from CS background ❣️

[@thekokoserver]

enjoying the playlist

[@yohanmaharanasingha9343]

Thank you

[@varuntanwar6746]

I loved the example of phone.

[@FindARandom]

I am present in computers program as well - lord parama (rama)

[@sajalagarwal9649]

badiya

[@debarghyamajumder998]

Sir, u are God!

[@kolikondasushmitha]

Sir we are writing the same code which is in parent class to child class. As you mentioned reusability in inheritence and this code doesn't follow this rule.

[@Unknown373d]

great

[@start1learn-n171]

Tq

[@sagarhm2237]

Sir we need advanace java also plzzz there's no tutorial in youtube as good

[@Shivkanya712]

where i get your notes( java) sir

[@hela-knox5163]

GOATED

[@farhodbekxamidov2013]

👍

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As long as you keep yourself updated, nothing can replace you.

[@VijayRaj-ij4on]

@@HariPrasad-qe3hd Thank you

[@nagarajpatil7101]

Once you runs code n that gives u some output but after the story the output is changed without changing code anything 😅 how this is possible?

[@astarathore]

Because he had turned that specific part of the code into a comment, and then brought it back to show the difference, hence we got 8 instead of 7 as the output

[@modguy9894]

Java in 2023? Let's go

[@kvelez]

public class Main{
public static void main(String[] args) {
C letter = new C();
letter.Show();
}
}
class A{
public A(){
System.out.println("Hello from A");
}
public void Show(){//Original method
System.out.println("In A");
}
}
class B extends A{
public B(){
super();//Executes parent output
System.out.println("Hello from B");
}
@Override
public void Show(){
System.out.println("In B");
}
}
class C extends B{
public C(){
super();//Executes parent output
System.out.println("Hello from C");
}
@Override
public void Show(){//Override method
System.out.println("In C");
}
}

[@NOName-tv8ro]

could have written it in an ordered way

[@prasanthivasu]

Pls make background as white in intellij

[@InsufferableMoron]

I love your content prepping for isc 2024, just one question in precious lectures we saw that the method of class A(parent class0 was given preference as it was a method of class and then method B was given preference so why does it change here, because as we know super is the first line of code in inheritance so why did it override here and not go to the super class?

[@ashmita_shrivastava]

underrated channel🥲

[@Pratik_yadaw]

thankyou sir very very much