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.

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

This article shows how to use the Apache Commons JXPath component to easily query complex Java object trees for data using the XPath expression language. It covers both basic and advanced features ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...