Given: package pkg1; class Bb { } public class Ee { private Ee() { } } package pkg2; final class Ww; package pkg3; public abstract class Dd { void m() { } } And, 1. package pkg4; 2. import pkg1.; 3. i

Class `Bb` is a non-final, non-abstract class with a default constructor, making it accessible and extendable by class `Cc` through package import.

Class `Ww` is declared with the 'final' modifier, which explicitly prevents any other class from extending it.

Class `Ee` has a private constructor, preventing any external class, including a subclass, from implicitly or explicitly invoking a superclass constructor during inheritance.

Class `Dd` is an abstract class, explicitly designed for extension, and since it's public and imported, `Cc` can extend it without issue.