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.

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

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

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.