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 ...

Although Java lacks a true sizeof () equivalent, the Instrumentation interface introduced with J2SE5 can be used to get an estimate of the size of a particular object via its getObjectSize (Object ...

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.

Learn about serialization in Java with our comprehensive tutorial. We provide examples to help you understand how serialization works.