What are inner classes in Java and how do they work?

What are inner classes in Java and how do they work?

Inner classes in Java are classes defined within another class. They can access the outer class's members, including private ones.

Can you give me an example of an inner class?

Sure! Here's a simple example:

class Outer {
    class Inner {
        void display() {
            System.out.println("Inner class method");
        }
    }
}

In this example, Inner is an inner class of Outer.

What are the benefits of using inner classes?

Inner classes can help logically group classes that are only used in one place, increase encapsulation, and improve code readability.

Are there different types of inner classes?

Yes, there are several types: non-static inner classes, static nested classes, local classes, and anonymous classes.

How do static nested classes differ from inner classes?

Static nested classes do not have access to instance variables of the outer class, while inner classes do.