Inheritance and composition are two ... Now let’s try the same example using composition: import java.util.HashSet; import java.util.Set; public class CharacterCompositionExample { static ...

Sealed classes address precisely the type of inheritance control previously described. Here's how we can refactor the above example ... developer can add that clause. The modifier non-sealed is the ...

Java’s single inheritance limitation ... In that case, I needed multiple inheritance because I was adding the ability to drag and drop objects between the different components of the GUI and ...