Any method you can conjure up takes an object and returns an object that fulfills the Java Function contract. For this Java Function interface example, we will provide a single method named “apply” ...

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches ... s body is composed of interface and implementation.

Quite often a Java Stream or other component needs an object passed to it in order ... which is where functional interfaces really shine. Here is the functional Consumer interface example implemented ...

Now that you know how initialization works, you’ve largely completed your exploration of Java’s class and object language features. The next tutorial in this series dips into interfaces ...