Compare inheritance and composition, the two fundamental ways to relate Java classes, then practice debugging ClassCastExceptions in Java inheritance.

Learn the four types of polymorphism in Java, then start using subtype polymorphism to execute different forms of the same Java method.

In this paper, we outline techniques to identify superclass/subclass relationship in XML Schema and propose guidelines to map XML Schema to ORDB schema utilizing such semantic information.

Domain-Inheritance and gson: cannot use superClass as model, needs to be specific for each subclass #203 ...