including the difference between classes and interfaces, see my Java 101 tutorial Working with interfaces in Java. You access an enclosed interface by prefixing its name with the enclosing ...

This project provides a set of Java code examples illustrating the set of functional interfaces that were added to the JDK’s java.util.function package in Java 8+, their general use cases and usage in ...

An interface can never have a state ... an abstract class when you need to implement mutable state. As an example, the Java Collections Framework includes the AbstractList class, which uses ...

In this functional programming tutorial, we will work through a Java Supplier interface example. Java’s functional supplier interface can be used any time a function needs to generate a result without ...

For example, you can use a predicate interface ... Why dive into custom predicate interfaces in Java? It's not just about coding; it's about tailoring logic to fit like a glove.

If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...