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.

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

You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java.

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...