Java interfaces are different from classes, and it’s important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and ...

A simple Java program that uses Swing and Java2D to help students understand the concept of Java interfaces. The program is a JFrame that contains shapes. Created shapes can be dragged around the top ...

or validate data in Java. Predicate interfaces are useful when you want to apply a logic or a rule to a collection of objects. For example, you can use a predicate interface to filter a list of ...

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 ...

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 ...

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 ...

We provide examples to help you understand ... In addition to Serializable, Java provides the Externalizable interface. Unlike Serializable, which handles serialization automatically ...

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 ...