We will focus on the relationship between polymorphism and Java inheritance ... The purpose of using polymorphism is to decouple the client class from the implementation code.

Here's how it works. Use sealed 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 ...

Consider a simple problem domain for which we need to calculate the area of various shapes ... use inheritance and apply the rules of polymorphism to your code. To write SOLID code, and properly ...

Java’s interface ... interface inheritance. Suppose you want to write a program that counts the number of times you have failed to start a washing machine. You would like to use that counting ...