What are some common mistakes with nested classes in Java?

What are some common mistakes with nested classes in Java?

Some common mistakes include not understanding the scope of nested classes, misuse of static nested classes, and failing to properly instantiate inner classes.

Can you explain the difference between static and non-static nested classes?

Sure! Static nested classes do not have access to instance variables of the outer class, while non-static nested classes can access them.

What happens if I try to access a non-static nested class from a static context?

You will encounter a compilation error because non-static nested classes require an instance of the outer class to be instantiated.

Are there any performance implications of using nested classes?

Yes, using nested classes can lead to increased memory usage if not managed properly, especially with non-static nested classes.

How can I avoid common pitfalls when using nested classes?

To avoid pitfalls, ensure you understand the scope, use static nested classes when appropriate, and manage instances carefully.