Question

If I have class with a nested class, why wouldn’t you want it to be static? Is there even a way for two instances of the same class to have different nested classes?

For example:

class MyClass {  
    public static class myInnerClass {

    }
}

Answer 1

why wouldn’t you want it to be static

Because I want it to access instance data of a parent object.

Is there even a way for two instances of the same class to have different nested classes?

What do you mean by have? Declared? A class has only one declaration where you list all nested classes. So, in this case the answer is no.