#62 Inner Class in Java

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#62 Inner Class in Java

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In this lecture we will learn:
- What is an inner class in Java?
- Static inner classes in Java
- Advantages Of inner class
#1
Inner Class:-
- We can also create a class inside another class.
class A
{
class B
{
}
}
- You can call the method of class B by using the dot operator in between both classes A and B.
A.B obj= new B();
- A dollar sign will be introduced in a class name that has an inner class indicating two different classes.
A$B. class
- You also need to create an object of the outer class, to call the methods of an inner class.
#2
Static Inner Class:-
- An inner class can also be declared as static.
- When an inner class is declared as static, then you do not need to create an object for it.
- But an outer class can not be made static.
#3
Advantage of inner class:-
- Nested classes represent a particular type of relationship that is it can access all the members of the outer class, including private.
- Nested classes make the code more readable and maintainable.
- It makes the code more optimize.
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Пікірлер: 13

@raghavsood768 Жыл бұрын

Only inner class can be static

@seeesh1165 11 ай бұрын

Bro is the best teacher in the world !

@priyanshu6339 Жыл бұрын

Good explaination

@user-ju2tj3kr6n 3 ай бұрын

Thanks

@sheikhraisulislam4483 Жыл бұрын

really good

@toptecher1633 4 ай бұрын

sir when i am doing so i am getting error obj package not found A obj = new A(); A.B = new obj.B(); //i have made class A and B as you made //when i make B static it works well

@talhaofficial87 3 ай бұрын

but sir ham to static ka object banaty hi nahi hy to ye kese ho raha hy

@reddykailasam1617 3 ай бұрын

Sir, please can u do videos in telugu? Your explanation is wonderful. If u do videos in telugu, a lot of telugu people will understand and learn Java

@abhis1560 Жыл бұрын

Are all inner class static and vice versa

@harshabannaravuri9229 Жыл бұрын

Why outer class cannot be private are protected

@gamingdipesh8389 11 ай бұрын

because it would make it inaccessible to other classes, including its inner classes, violating the fundamental access control rules.and other rule says classes should start from class we cant take any thing in front of them this is general rule