#21 Class And Object Theory in Java

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#21 Class And Object Theory in Java

Рет қаралды 231,239

Күн бұрын

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In this lecture we will learn:
- Java is an object-oriented language
- What are objects?
- What are classes?
- How do classes and objects create?
#1
Java is Object- Oriented Programming:-
- In the real world, everything is an object like a pen, mouse, glass, etc.
- Every object has two things:
- An object knows something ( It has some properties)
- An object does something( It has a behaviour)
- Every object has a property and behaviour. It can also have multiple properties as well as multiple behaviours.
- To create an object, first, we need to create a class.
- Class act as a blueprint that contains the designing of an object.
#2
- JVM creates objects in Java.
- JVM creates an object but it requires a blueprint.
- Thus, you create a class file that class file gets compiled to create a byte code and that byte code goes to the JVM and then JVM creates an object.
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Пікірлер: 44

@polytrave 7 ай бұрын

i have a test tomorow about this. thank you for explaining!

@wilwill6826 8 ай бұрын

I subscribed this month. I am starting to see a pattern with Head First Java. Great training, Sir!

@saieswar7701 Жыл бұрын

0:31 that hits hard

@flyboy5691 15 күн бұрын

When it comes to programming: This man😊❤

@user-ty8xt1dj3i 7 ай бұрын

one of the best lecture, having proper explanation. Thank you

@Mahi_Vasu_7 Жыл бұрын

hi sir, please make a video based on core java interview questions for freshers pls........

@Welcome_to_reality. Жыл бұрын

Don't Objectify me sir i am not a object

@GargeyasaikrishnaChava 8 ай бұрын

In java bro

@gersonmuel7546 6 ай бұрын

😂😂😂

@pasindupabasara1293 4 ай бұрын

😂😂

@Shrutiii8 Ай бұрын

😂😂😂

@SanataniRishu02 Ай бұрын

Java : tu hai tujhe pata nhi hai par tu hai (in roadies style) 😂😂

@sanketdevray4590 7 ай бұрын

Object is something which have state and behaviour that's it.....

@SanataniRishu02 Ай бұрын

Yeah sweet and simple why isn't anyone liking it?

@Deepuarakatla Жыл бұрын

Hello reddy sir...thank u for this series❤

@susmitasahani1353 28 күн бұрын

Where are the 20 videos of starting

@Mamthaaaaaa 2 ай бұрын

Wow thank you sir

@Xteaxipn Жыл бұрын

a x = new b (); sir what does it mean can object have different refrence and created for another class ???? please explain me its so confusing

@sridharkarri4434 Жыл бұрын

it is the concept of upcasting assining the parent reference variable to the child class it can access only parent variables and some overidden methods

@Xteaxipn Жыл бұрын

@@sridharkarri4434 so what it means when we created aj object of a class and different refrence of class?

@informationtechtips5391 Жыл бұрын

@@Xteaxipn This possible when B class is child of A; suppose we have create class named as Animal and then cat class extends Animal class so cat is bascially what is Animal so we can write Animal c1=new Cat(); c1 is type of Animal but it is object of Cat class

@Xteaxipn Жыл бұрын

@@informationtechtips5391 ok thanks sir

@k_arsh_10 Ай бұрын

Everything is an object, even women ?

@pratiktiwariramji 27 күн бұрын

You are also an object bro 😂

@Ahdheer 9 күн бұрын

😂😂

@zr0724 Жыл бұрын

tell us about framework in java

@hrishikeshmukherjee813 Жыл бұрын

Thank you

@navinderwadhwa8444 11 ай бұрын

Sir so object is the output we get??

@NicholasYg 10 ай бұрын

No, object is an instance of a class. An object can define some properties/variables and use some methods AKA functions

@ramakrishnanalluri2547 4 ай бұрын

thanks sir

@kapilvadher4935 5 ай бұрын

Sir, you look like Leonard Hofstader 😎😎

@akshaygalande2318 4 ай бұрын

What is present in the class file which is compliled

@Dianaa4-i6h Ай бұрын

Byte code of Java file which is compiled

@ajitdeshmukh6156 Жыл бұрын

Hello sir....make a video on how to dance

@abdulbasith3818 9 ай бұрын

😢

@Gamuss12345 8 ай бұрын

@sanketdevray4590 7 ай бұрын

In fact human thinking is object oriented 😅

@neocoretec Жыл бұрын

0:27 🤣

@Mahi_Vasu_7 Жыл бұрын

how to handle the pressure during a interview

@sivareddy412 Жыл бұрын

Learn perfectly and u should feel u know all concepts and even u don't know some concepts u should feel the same then only u can overcome from that fear