In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

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 ...

So to learn Java lambda syntax, you need to be familiar with its three component parts: The argument list; The arrow; The method body; To apply these concepts, we first need a functional interface. A ...

If you’ve read my Java 101 tutorial introducing static ... Many developers believe that nesting a class in an interface violates object-oriented programming and the purpose for an interface.