Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields, ...

Passing an instance is passing a function pointer. Along with a ton of other things, of course. Java introduced the concept of "single abstract method" types to do function pointer-like things.

This Q&A is part of a weekly series of posts highlighting common questions encountered by technophiles and answered by users at Stack Exchange, a free, community-powered network of 100+ Q&A sites. So, ...