#62 Inner Class in Java

Published: 18 January 2023
on channel: Telusko

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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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