Learn the difference between classes and interfaces once and for all, then get started declaring, implementing, and extending interfaces in your Java programs ...

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. You'll also ...

Listing 3. Major classes and interfaces used in the framework. public interface SecurityDescriptor extends java.io.Serializable { // The getPermission methods return a constants defined in the // ...

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.