Now you can implement the Meal interface as a self-composing Product like so: package enclosingclassasbuilder; import java.util.ArrayList; public class SelfComposingMeal implements Meal { private ...

We will focus on the relationship between polymorphism and Java inheritance. The main thing to keep in mind is that polymorphism requires an inheritance or an interface implementation. You can see ...

Java job seekers must fully grok this important concept ... So there's a Collections interface that things like Vector and ArrayList actually implement. So this is all of my favorites. Let's, uh, find ...