Inheritance is one example: the DSFA application used inheritance within the business model, but not to a great extent. UML is also very strong at showing the cardinality of associations; but the vast ...

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

Inheritance can descend through multiple levels, leading to ever-more-specific categories. As an example, Figure 1 shows car and truck inheriting from vehicle; station wagon inheriting from car ...

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 ...