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 ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...

This repository contains examples demonstrating Java interface inheritance concepts, including single-level, multi-level, and hierarchical inheritance. It showcases how interfaces extend other ...

Learn what a predicate interface is and how to use it in Java. Find out how to create your own custom predicate interface and combine it with other predicates.

See the Java 101 Java interfaces tutorial for a more in-depth introduction to using interfaces in your Java programs, including where and where not to use default, static, and private methods.

How to use Java’s Function interface. For this Java Function interface example, we will provide a single method named “apply” that takes an Integer as an argument, squares it and returns the result as ...