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 ...

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.

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.

Excessive object creation can be a huge problem in Java programs. Despite continuing improvements in JVM technology for memory management, the object creation and garbage collection cycle is still ...

This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.

The Java Platform provides the most commonly used data structures in the form of the Collections Framework, and it provides a rich API to operate on them. This article explains the concepts behind ...