Java supports class reuse through inheritance and composition. This two-part tutorial teaches you how to use inheritance in your Java programs.

Understanding advanced generics and type erasure in Java enhances your ability to write type-safe and efficient Java code. Let’s recap the most important points of this article.

This looks like the Liskov substitution principle that Uncle Bob Martin described: Substitute a derived class (Square) for a base class (Rectangle). From the standpoint of the compiler, the above code ...