We will focus on the relationship between polymorphism and Java inheritance. The main thing ... the client class knows just enough to execute its actions, which is an example of loose coupling.

In this case, a car is a type of vehicle, so the inheritance relationship makes ... or constructor of its parent class. In Java, we use the reserved word super to ensure the child class can ...

A method might accept a specific type and its subclasses, but you want to restrict usage to a select few implementations of your own design. Java's open inheritance model can feel like an open ...