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.

The sealed Java class helps reign in the overzealous and often detrimental abuse of Java inheritance. Sealed classes allow a developer to explicitly declare the names of the components that can ...

Must be Java, where private does not mean private. Simply put, if you can bypass the mechanism, then the mechanism has failed. Each class should be the expert on handling all communication needed ...

Dynamic loading of Java classes at runtime provides tremendous flexibility in the development of enterprise systems. It provides for the basis of "application servers", and allows even simpler, ...