Inheritance and composition ... it is also clear that this code does not pass the “is a” test. Now let’s try the same example using composition: import java.util.HashSet; import java.util ...

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 ...

The result is code that ... classes in Java to control your inheritance Need to limit the number of possible subclasses in your codebase? Here comes Java's sealed classes to your rescue. Advanced Java ...