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 ...

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 ...

Examples of Java’s packages include: java.lang : A collection of language-related classes, such as Object and String , organized in the java package’s lang subpackage ...

By example, I showed you how to use a text file to load new functionality to code that uses no interfaces. Experiment with the code, and see how you can extend it.

An application programming interface, or API, is a "go-between" that enables a software program to interact with other software.