Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

Java reference objects make caching easy 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.

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...

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