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 ...

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 ...

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 ...

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 ...

Value Parameters: An example that shows the behavior of value parameters. In Java all parameters are passed by value. String Example. A few brief examples of String manipulations. BinaryConverter. A ...

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 ...

The @FunctionalInterface annotation is how java-8 identifies classes that are eligable ... a function is that it may only contain one public method. For an example of how functional interfaces are ...