Nested classes(inner class) in java

DrRakha

Nested (inner ) classes:
You can create a class inside other class .This class is called nested class and the main class is called outer class

For example:

Code:

class <OuterNameofClass> {
// variables and methods for the outer class

class <NestedNameofClass> {
// variables and methods for the nested class

}
}   

Nested class is a member of the outer class and can see all other members of the class (methods and variables). Nested class can be static or non static .You may ask when I need a nested class? You may need it in cases that the nested class depends in the outer class in its functionality and existence.

Rules :

if you have a static nested class, you can't access the methods and variables of the outer class from the static nested (inner) class.
You can't create a static member inside the nested class.
To have instance of nested class you must have a instance of outer class.
Nested class can be declared abstract or final.

Code:

public class Main {
 
     
            
    public static void main(String[] args) {

            outterclass outobj=new outterclass();
            outterclass.innerclass innerobj=outobj.new  innerclass();
    }
}

class outterclass {

    class innerclass
    {
        
    }
} 

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Nested classes(inner class) in java

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