Generally, functional programming ... class function support. That is the impetus behind Java 8’s support for Lambda expressions. Another way to describe first class functions is functions as data.

There are only half a dozen classes ... functional programming tutorial, we will work through a Java Supplier interface example. Java’s functional supplier interface can be used any time a function ...

Becoming popular in the early 1990s and the norm today, object-oriented programming (OOP) languages, such as C++ and Java ... to the data. These user-defined data types are called "classes ...

Java was intended to be simple to use, have built-in network support, utilize object-oriented programming ... a class by creating a single copy. Variables are used as containers that store data.