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 ...

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

Apple was required to provide the defense-in-depth update because it still maintains Java 6, which it bundled with 2009’s OS X Snow Leopard and offered to users running 2011’s Lion as an ...

For Snow Leopard users running 10.6.8, Java for Mac OS X 10.6 Update 6 is the update to turn to. It also updates Java SE 6 to 1.6.0_29, and delivers similar improvements to that of the Lion version.