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

Java doesn’t support multiple inheritance through class extension, however. When viewing an inheritance hierarchy, you can easily detect multiple inheritance by the presence of a diamond pattern.

But there are very few Java syntax checkpoints that limit the potential for inheritance-based, object-oriented corruption. The sealed Java class helps reign in the overzealous and often detrimental ...