What are the differences between nested classes and regular classes?

What are the differences between nested classes and regular classes?

Nested classes are defined within another class, while regular classes are standalone. Nested classes can access the outer class's members directly.

Can you give me an example of a nested class?

Sure! In Java, you can define a nested class like this:

class Outer {
    class Inner {
        void display() {
            System.out.println("This is a nested class.");
        }
    }
}

What are the benefits of using nested classes?

Nested classes can help organize code better, encapsulate functionality, and improve readability by logically grouping classes.

Are there any downsides to using nested classes?

Yes, nested classes can increase complexity and may lead to tighter coupling between classes, making maintenance harder.