Comparable Interface In Java, an "interface" is an abstract base class that only serves the purpose of a template for other classes.

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 java.util.function package contains well over 40 different components, but if you can garner a good understanding of consumers, predicates, functions, unary types and suppliers, knowledge of the ...