Why does Java's standard class library contain empty interfaces like Cloneable and Serializable? Find out why in this sixth installment in the "Object-oriented language basics" series.

Interested in Java functional programming? The first place you need to start, especially if you use the Streams API, is with this Java Function interface example.

The functional consumer interface is a key part of the Java Streams API. Here is a simple Consumer interface example to show you how to use this Java component.