Java interfaces are different from classes, and it’s important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and ...

Java also lets you declare interfaces inside of interfaces. In this case, a nested interface is a static member of its enclosing interface, and once again the static keyword is redundant.

The functional Predicate interface gets used extensively by the Java 8 Streams API. Any developer who wants to master functional programming in Java will need to be comfortable with the Predicate ...