Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs. Abstract classes ...

Anytime we pass an interface with a method implementation to another method in Java, we are using the concept of a callback function. In the following code, we will pass the Consumer functional ...

That’s all you really need to know about the java.util.function.Function interface. It is a very simple component that simply requires the implementation of one method — named apply — that is passed ...

Also known as the Java 8 Predicate -- which stems from the JDK version where functional programming was introduced to developers -- this simple interface defines five methods, although only the Java ...