Now let’s try the same example using composition: import java.util.HashSet; import java.util.Set; public class CharacterCompositionExample { static Set<String> set = new HashSet<>(); public ...

Java’s interface language feature confuses ... declaration and access, object composition, object layering, multiple implementation inheritance, and the root of all classes.

In Java, objects are passed by reference ... You may wonder why doing so would be useful. After all, we can use composition instead of inheritance by making the Derived class hold a reference of type ...