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 ...

Most Java developers who come from a C/C++ background have probably at one time wished for a Java equivalent of sizeof() .

Reference objects aren't just useful when memory is at a premium; they can also be used to provide slick caching abilities to any application.

Object strings create two objects, whereas primitives create just one. Object strings create the string literal and the variable to refer to it. The two string types are stored in memory differently.