In Java, polymorphism results in code that ... The following example demonstrates: Superclass superclass = new Superclass(); Subclass subclass = new Subclass(); System.out.println(subclass ...

Now let’s try the same example using composition: import java.util.HashSet ... from another, the superclass’s constructor will be loaded first, before loading its subclass.

Imagine you are an expert object-oriented Java developer who meticulously crafts code the ... Another approach could be a package-private superclass in the JDK. However, an ideal solution would be to ...