Why does the inner class need an object of the outer class?

Question

Java

Why does the inner class need an object of the outer class? Is it because the inner class has access to the fields and methods of the outer class?
Tell me please.

Answer 1

Not an object, but a reference, and if it's not a static inner class.
Yes, that's right, because you need access to the fields and methods of the outer class.
If you decompile the inner class, you can see that the compiler adds a parameter to the constructor - a reference to the outer class.